Date: 2021-03-03T22:25:42+00:00

Actual source code: pinit.c
petsc-3.14.5 2021-03-03
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      1: #define PETSC_DESIRE_FEATURE_TEST_MACROS
      2: /*
      3:    This file defines the initialization of PETSc, including PetscInitialize()
      4: */
      5: #include <petsc/private/petscimpl.h>
      6: #include <petscvalgrind.h>
      7: #include <petscviewer.h>
      8: #if defined(PETSC_USE_GCOV)
      9: EXTERN_C_BEGIN
     10: void  __gcov_flush(void);
     11: EXTERN_C_END
     12: #endif

     14: #if defined(PETSC_USE_LOG)
     15: PETSC_INTERN PetscErrorCode PetscLogFinalize(void);
     16: #endif

     18: #if defined(PETSC_SERIALIZE_FUNCTIONS)
     19: PETSC_INTERN PetscFPT PetscFPTData;
     20: PetscFPT PetscFPTData = 0;
     21: #endif

     23: #if defined(PETSC_HAVE_SAWS)
     24: #include <petscviewersaws.h>
     25: #endif

     27: /* -----------------------------------------------------------------------------------------*/

     29: PETSC_INTERN FILE *petsc_history;

     31: PETSC_INTERN PetscErrorCode PetscInitialize_DynamicLibraries(void);
     32: PETSC_INTERN PetscErrorCode PetscFinalize_DynamicLibraries(void);
     33: PETSC_INTERN PetscErrorCode PetscFunctionListPrintAll(void);
     34: PETSC_INTERN PetscErrorCode PetscSequentialPhaseBegin_Private(MPI_Comm,int);
     35: PETSC_INTERN PetscErrorCode PetscSequentialPhaseEnd_Private(MPI_Comm,int);
     36: PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE**);

     38: /* user may set these BEFORE calling PetscInitialize() */
     39: MPI_Comm PETSC_COMM_WORLD = MPI_COMM_NULL;
     40: #if defined(PETSC_HAVE_MPI_INIT_THREAD)
     41: PetscMPIInt PETSC_MPI_THREAD_REQUIRED = MPI_THREAD_FUNNELED;
     42: #else
     43: PetscMPIInt PETSC_MPI_THREAD_REQUIRED = 0;
     44: #endif

     46: PetscMPIInt Petsc_Counter_keyval   = MPI_KEYVAL_INVALID;
     47: PetscMPIInt Petsc_InnerComm_keyval = MPI_KEYVAL_INVALID;
     48: PetscMPIInt Petsc_OuterComm_keyval = MPI_KEYVAL_INVALID;
     49: PetscMPIInt Petsc_ShmComm_keyval   = MPI_KEYVAL_INVALID;

     51: /*
     52:      Declare and set all the string names of the PETSc enums
     53: */
     54: const char *const PetscBools[]     = {"FALSE","TRUE","PetscBool","PETSC_",NULL};
     55: const char *const PetscCopyModes[] = {"COPY_VALUES","OWN_POINTER","USE_POINTER","PetscCopyMode","PETSC_",NULL};

     57: PetscBool PetscPreLoadingUsed = PETSC_FALSE;
     58: PetscBool PetscPreLoadingOn   = PETSC_FALSE;

     60: PetscInt PetscHotRegionDepth;

     62: #if defined(PETSC_HAVE_THREADSAFETY)
     63: PetscSpinlock PetscViewerASCIISpinLockOpen;
     64: PetscSpinlock PetscViewerASCIISpinLockStdout;
     65: PetscSpinlock PetscViewerASCIISpinLockStderr;
     66: PetscSpinlock PetscCommSpinLock;
     67: #endif

     69: /*
     70:       PetscInitializeNoPointers - Calls PetscInitialize() from C/C++ without the pointers to argc and args

     72:    Collective

     74:    Level: advanced

     76:     Notes:
     77:     this is called only by the PETSc Julia interface. Even though it might start MPI it sets the flag to
     78:      indicate that it did NOT start MPI so that the PetscFinalize() does not end MPI, thus allowing PetscInitialize() to
     79:      be called multiple times from Julia without the problem of trying to initialize MPI more than once.

     81:      Developer Note: Turns off PETSc signal handling to allow Julia to manage signals

     83: .seealso: PetscInitialize(), PetscInitializeFortran(), PetscInitializeNoArguments()
     84: */
     85: PetscErrorCode  PetscInitializeNoPointers(int argc,char **args,const char *filename,const char *help)
     86: {
     88:   int            myargc   = argc;
     89:   char           **myargs = args;

     92:   PetscInitialize(&myargc,&myargs,filename,help);if (ierr) return ierr;
     93:   PetscPopSignalHandler();
     94:   PetscBeganMPI = PETSC_FALSE;
     95:   PetscFunctionReturn(ierr);
     96: }

     98: /*
     99:       Used by Julia interface to get communicator
    100: */
    101: PetscErrorCode  PetscGetPETSC_COMM_SELF(MPI_Comm *comm)
    102: {
    104:   *comm = PETSC_COMM_SELF;
    105:   return(0);
    106: }

    108: /*@C
    109:       PetscInitializeNoArguments - Calls PetscInitialize() from C/C++ without
    110:         the command line arguments.

    112:    Collective

    114:    Level: advanced

    116: .seealso: PetscInitialize(), PetscInitializeFortran()
    117: @*/
    118: PetscErrorCode  PetscInitializeNoArguments(void)
    119: {
    121:   int            argc   = 0;
    122:   char           **args = NULL;

    125:   PetscInitialize(&argc,&args,NULL,NULL);
    126:   PetscFunctionReturn(ierr);
    127: }

    129: /*@
    130:       PetscInitialized - Determine whether PETSc is initialized.

    132:    Level: beginner

    134: .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
    135: @*/
    136: PetscErrorCode PetscInitialized(PetscBool *isInitialized)
    137: {
    138:   *isInitialized = PetscInitializeCalled;
    139:   return 0;
    140: }

    142: /*@
    143:       PetscFinalized - Determine whether PetscFinalize() has been called yet

    145:    Level: developer

    147: .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
    148: @*/
    149: PetscErrorCode  PetscFinalized(PetscBool  *isFinalized)
    150: {
    151:   *isFinalized = PetscFinalizeCalled;
    152:   return 0;
    153: }

    155: PETSC_INTERN PetscErrorCode PetscOptionsCheckInitial_Private(const char []);

    157: /*
    158:        This function is the MPI reduction operation used to compute the sum of the
    159:    first half of the datatype and the max of the second half.
    160: */
    161: MPI_Op MPIU_MAXSUM_OP = 0;

    163: PETSC_INTERN void MPIAPI MPIU_MaxSum_Local(void *in,void *out,int *cnt,MPI_Datatype *datatype)
    164: {
    165:   PetscInt *xin = (PetscInt*)in,*xout = (PetscInt*)out,i,count = *cnt;

    168:   if (*datatype != MPIU_2INT) {
    169:     (*PetscErrorPrintf)("Can only handle MPIU_2INT data types");
    170:     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
    171:   }

    173:   for (i=0; i<count; i++) {
    174:     xout[2*i]    = PetscMax(xout[2*i],xin[2*i]);
    175:     xout[2*i+1] += xin[2*i+1];
    176:   }
    177:   PetscFunctionReturnVoid();
    178: }

    180: /*
    181:     Returns the max of the first entry owned by this processor and the
    182: sum of the second entry.

    184:     The reason sizes[2*i] contains lengths sizes[2*i+1] contains flag of 1 if length is nonzero
    185: is so that the MPIU_MAXSUM_OP() can set TWO values, if we passed in only sizes[i] with lengths
    186: there would be no place to store the both needed results.
    187: */
    188: PetscErrorCode  PetscMaxSum(MPI_Comm comm,const PetscInt sizes[],PetscInt *max,PetscInt *sum)
    189: {

    193: #if defined(PETSC_HAVE_MPI_REDUCE_SCATTER_BLOCK)
    194:   {
    195:     struct {PetscInt max,sum;} work;
    196:     MPI_Reduce_scatter_block((void*)sizes,&work,1,MPIU_2INT,MPIU_MAXSUM_OP,comm);
    197:     *max = work.max;
    198:     *sum = work.sum;
    199:   }
    200: #else
    201:   {
    202:     PetscMPIInt    size,rank;
    203:     struct {PetscInt max,sum;} *work;
    204:     MPI_Comm_size(comm,&size);
    205:     MPI_Comm_rank(comm,&rank);
    206:     PetscMalloc1(size,&work);
    207:     MPIU_Allreduce((void*)sizes,work,size,MPIU_2INT,MPIU_MAXSUM_OP,comm);
    208:     *max = work[rank].max;
    209:     *sum = work[rank].sum;
    210:     PetscFree(work);
    211:   }
    212: #endif
    213:   return(0);
    214: }

    216: /* ----------------------------------------------------------------------------*/

    218: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    219: MPI_Op MPIU_SUM = 0;

    221: PETSC_EXTERN void PetscSum_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    222: {
    223:   PetscInt i,count = *cnt;

    226:   if (*datatype == MPIU_REAL) {
    227:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    228:     for (i=0; i<count; i++) xout[i] += xin[i];
    229:   }
    230: #if defined(PETSC_HAVE_COMPLEX)
    231:   else if (*datatype == MPIU_COMPLEX) {
    232:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    233:     for (i=0; i<count; i++) xout[i] += xin[i];
    234:   }
    235: #endif
    236:   else {
    237:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
    238:     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
    239:   }
    240:   PetscFunctionReturnVoid();
    241: }
    242: #endif

    244: #if defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    245: MPI_Op MPIU_MAX = 0;
    246: MPI_Op MPIU_MIN = 0;

    248: PETSC_EXTERN void PetscMax_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    249: {
    250:   PetscInt i,count = *cnt;

    253:   if (*datatype == MPIU_REAL) {
    254:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    255:     for (i=0; i<count; i++) xout[i] = PetscMax(xout[i],xin[i]);
    256:   }
    257: #if defined(PETSC_HAVE_COMPLEX)
    258:   else if (*datatype == MPIU_COMPLEX) {
    259:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    260:     for (i=0; i<count; i++) {
    261:       xout[i] = PetscRealPartComplex(xout[i])<PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
    262:     }
    263:   }
    264: #endif
    265:   else {
    266:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
    267:     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
    268:   }
    269:   PetscFunctionReturnVoid();
    270: }

    272: PETSC_EXTERN void PetscMin_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    273: {
    274:   PetscInt    i,count = *cnt;

    277:   if (*datatype == MPIU_REAL) {
    278:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    279:     for (i=0; i<count; i++) xout[i] = PetscMin(xout[i],xin[i]);
    280:   }
    281: #if defined(PETSC_HAVE_COMPLEX)
    282:   else if (*datatype == MPIU_COMPLEX) {
    283:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    284:     for (i=0; i<count; i++) {
    285:       xout[i] = PetscRealPartComplex(xout[i])>PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
    286:     }
    287:   }
    288: #endif
    289:   else {
    290:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_SCALAR data (i.e. double or complex) types");
    291:     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
    292:   }
    293:   PetscFunctionReturnVoid();
    294: }
    295: #endif

    297: /*
    298:    Private routine to delete internal tag/name counter storage when a communicator is freed.

    300:    This is called by MPI, not by users. This is called by MPI_Comm_free() when the communicator that has this  data as an attribute is freed.

    302:    Note: this is declared extern "C" because it is passed to MPI_Comm_create_keyval()

    304: */
    305: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_Counter_Attr_Delete_Fn(MPI_Comm comm,PetscMPIInt keyval,void *count_val,void *extra_state)
    306: {
    307:   PetscErrorCode   ierr;
    308:   PetscCommCounter *counter=(PetscCommCounter*)count_val;

    311:   PetscInfo1(NULL,"Deleting counter data in an MPI_Comm %ld\n",(long)comm);CHKERRMPI(ierr);
    312:   PetscFree(counter->iflags);CHKERRMPI(ierr);
    313:   PetscFree(counter);CHKERRMPI(ierr);
    314:   PetscFunctionReturn(MPI_SUCCESS);
    315: }

    317: /*
    318:   This is invoked on the outer comm as a result of either PetscCommDestroy() (via MPI_Comm_delete_attr) or when the user
    319:   calls MPI_Comm_free().

    321:   This is the only entry point for breaking the links between inner and outer comms.

    323:   This is called by MPI, not by users. This is called when MPI_Comm_free() is called on the communicator.

    325:   Note: this is declared extern "C" because it is passed to MPI_Comm_create_keyval()

    327: */
    328: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_InnerComm_Attr_Delete_Fn(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
    329: {
    330:   PetscErrorCode                    ierr;
    331:   union {MPI_Comm comm; void *ptr;} icomm;

    334:   if (keyval != Petsc_InnerComm_keyval) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Unexpected keyval");
    335:   icomm.ptr = attr_val;
    336:   if (PetscDefined(USE_DEBUG)) {
    337:     /* Error out if the inner/outer comms are not correctly linked through their Outer/InnterComm attributes */
    338:     PetscMPIInt flg;
    339:     union {MPI_Comm comm; void *ptr;} ocomm;
    340:     MPI_Comm_get_attr(icomm.comm,Petsc_OuterComm_keyval,&ocomm,&flg);CHKERRMPI(ierr);
    341:     if (!flg) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner comm does not have OuterComm attribute");
    342:     if (ocomm.comm != comm) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner comm's OuterComm attribute does not point to outer PETSc comm");
    343:   }
    344:   MPI_Comm_delete_attr(icomm.comm,Petsc_OuterComm_keyval);CHKERRMPI(ierr);
    345:   PetscInfo2(NULL,"User MPI_Comm %ld is being unlinked from inner PETSc comm %ld\n",(long)comm,(long)icomm.comm);CHKERRMPI(ierr);
    346:   PetscFunctionReturn(MPI_SUCCESS);
    347: }

    349: /*
    350:  * This is invoked on the inner comm when Petsc_InnerComm_Attr_Delete_Fn calls MPI_Comm_delete_attr().  It should not be reached any other way.
    351:  */
    352: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_OuterComm_Attr_Delete_Fn(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
    353: {

    357:   PetscInfo1(NULL,"Removing reference to PETSc communicator embedded in a user MPI_Comm %ld\n",(long)comm);CHKERRMPI(ierr);
    358:   PetscFunctionReturn(MPI_SUCCESS);
    359: }

    361: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_ShmComm_Attr_Delete_Fn(MPI_Comm,PetscMPIInt,void *,void *);

    363: #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
    364: PETSC_EXTERN PetscMPIInt PetscDataRep_extent_fn(MPI_Datatype,MPI_Aint*,void*);
    365: PETSC_EXTERN PetscMPIInt PetscDataRep_read_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
    366: PETSC_EXTERN PetscMPIInt PetscDataRep_write_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
    367: #endif

    369: PetscMPIInt PETSC_MPI_ERROR_CLASS=MPI_ERR_LASTCODE,PETSC_MPI_ERROR_CODE;

    371: PETSC_INTERN int  PetscGlobalArgc;
    372: PETSC_INTERN char **PetscGlobalArgs;
    373: int  PetscGlobalArgc   = 0;
    374: char **PetscGlobalArgs = NULL;
    375: PetscSegBuffer PetscCitationsList;

    377: PetscErrorCode PetscCitationsInitialize(void)
    378: {

    382:   PetscSegBufferCreate(1,10000,&PetscCitationsList);
    383:   PetscCitationsRegister("@TechReport{petsc-user-ref,\n  Author = {Satish Balay and Shrirang Abhyankar and Mark F. Adams and Jed Brown \n            and Peter Brune and Kris Buschelman and Lisandro Dalcin and\n            Victor Eijkhout and William D. Gropp and Dmitry Karpeyev and\n            Dinesh Kaushik and Matthew G. Knepley and Dave A. May and Lois Curfman McInnes\n            and Richard Tran Mills and Todd Munson and Karl Rupp and Patrick Sanan\n            and Barry F. Smith and Stefano Zampini and Hong Zhang and Hong Zhang},\n  Title = {{PETS}c Users Manual},\n  Number = {ANL-95/11 - Revision 3.11},\n  Institution = {Argonne National Laboratory},\n  Year = {2019}\n}\n",NULL);
    384:   PetscCitationsRegister("@InProceedings{petsc-efficient,\n  Author = {Satish Balay and William D. Gropp and Lois Curfman McInnes and Barry F. Smith},\n  Title = {Efficient Management of Parallelism in Object Oriented Numerical Software Libraries},\n  Booktitle = {Modern Software Tools in Scientific Computing},\n  Editor = {E. Arge and A. M. Bruaset and H. P. Langtangen},\n  Pages = {163--202},\n  Publisher = {Birkh{\\\"{a}}user Press},\n  Year = {1997}\n}\n",NULL);
    385:   return(0);
    386: }

    388: static char programname[PETSC_MAX_PATH_LEN] = ""; /* HP includes entire path in name */

    390: PetscErrorCode  PetscSetProgramName(const char name[])
    391: {

    395:   PetscStrncpy(programname,name,sizeof(programname));
    396:   return(0);
    397: }

    399: /*@C
    400:     PetscGetProgramName - Gets the name of the running program.

    402:     Not Collective

    404:     Input Parameter:
    405: .   len - length of the string name

    407:     Output Parameter:
    408: .   name - the name of the running program

    410:    Level: advanced

    412:     Notes:
    413:     The name of the program is copied into the user-provided character
    414:     array of length len.  On some machines the program name includes
    415:     its entire path, so one should generally set len >= PETSC_MAX_PATH_LEN.
    416: @*/
    417: PetscErrorCode  PetscGetProgramName(char name[],size_t len)
    418: {

    422:    PetscStrncpy(name,programname,len);
    423:   return(0);
    424: }

    426: /*@C
    427:    PetscGetArgs - Allows you to access the raw command line arguments anywhere
    428:      after PetscInitialize() is called but before PetscFinalize().

    430:    Not Collective

    432:    Output Parameters:
    433: +  argc - count of number of command line arguments
    434: -  args - the command line arguments

    436:    Level: intermediate

    438:    Notes:
    439:       This is usually used to pass the command line arguments into other libraries
    440:    that are called internally deep in PETSc or the application.

    442:       The first argument contains the program name as is normal for C arguments.

    444: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArguments()

    446: @*/
    447: PetscErrorCode  PetscGetArgs(int *argc,char ***args)
    448: {
    450:   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
    451:   *argc = PetscGlobalArgc;
    452:   *args = PetscGlobalArgs;
    453:   return(0);
    454: }

    456: /*@C
    457:    PetscGetArguments - Allows you to access the  command line arguments anywhere
    458:      after PetscInitialize() is called but before PetscFinalize().

    460:    Not Collective

    462:    Output Parameters:
    463: .  args - the command line arguments

    465:    Level: intermediate

    467:    Notes:
    468:       This does NOT start with the program name and IS null terminated (final arg is void)

    470: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscFreeArguments()

    472: @*/
    473: PetscErrorCode  PetscGetArguments(char ***args)
    474: {
    475:   PetscInt       i,argc = PetscGlobalArgc;

    479:   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
    480:   if (!argc) {*args = NULL; return(0);}
    481:   PetscMalloc1(argc,args);
    482:   for (i=0; i<argc-1; i++) {
    483:     PetscStrallocpy(PetscGlobalArgs[i+1],&(*args)[i]);
    484:   }
    485:   (*args)[argc-1] = NULL;
    486:   return(0);
    487: }

    489: /*@C
    490:    PetscFreeArguments - Frees the memory obtained with PetscGetArguments()

    492:    Not Collective

    494:    Output Parameters:
    495: .  args - the command line arguments

    497:    Level: intermediate

    499: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscGetArguments()

    501: @*/
    502: PetscErrorCode  PetscFreeArguments(char **args)
    503: {
    504:   PetscInt       i = 0;

    508:   if (!args) return(0);
    509:   while (args[i]) {
    510:     PetscFree(args[i]);
    511:     i++;
    512:   }
    513:   PetscFree(args);
    514:   return(0);
    515: }

    517: #if defined(PETSC_HAVE_SAWS)
    518: #include <petscconfiginfo.h>

    520: PETSC_INTERN PetscErrorCode PetscInitializeSAWs(const char help[])
    521: {
    522:   if (!PetscGlobalRank) {
    523:     char           cert[PETSC_MAX_PATH_LEN],root[PETSC_MAX_PATH_LEN],*intro,programname[64],*appline,*options,version[64];
    524:     int            port;
    525:     PetscBool      flg,rootlocal = PETSC_FALSE,flg2,selectport = PETSC_FALSE;
    526:     size_t         applinelen,introlen;
    528:     char           sawsurl[256];

    530:     PetscOptionsHasName(NULL,NULL,"-saws_log",&flg);
    531:     if (flg) {
    532:       char  sawslog[PETSC_MAX_PATH_LEN];

    534:       PetscOptionsGetString(NULL,NULL,"-saws_log",sawslog,sizeof(sawslog),NULL);
    535:       if (sawslog[0]) {
    536:         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(sawslog));
    537:       } else {
    538:         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(NULL));
    539:       }
    540:     }
    541:     PetscOptionsGetString(NULL,NULL,"-saws_https",cert,sizeof(cert),&flg);
    542:     if (flg) {
    543:       PetscStackCallSAWs(SAWs_Set_Use_HTTPS,(cert));
    544:     }
    545:     PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select",&selectport,NULL);
    546:     if (selectport) {
    547:         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
    548:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    549:     } else {
    550:       PetscOptionsGetInt(NULL,NULL,"-saws_port",&port,&flg);
    551:       if (flg) {
    552:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    553:       }
    554:     }
    555:     PetscOptionsGetString(NULL,NULL,"-saws_root",root,sizeof(root),&flg);
    556:     if (flg) {
    557:       PetscStackCallSAWs(SAWs_Set_Document_Root,(root));
    558:       PetscStrcmp(root,".",&rootlocal);
    559:     } else {
    560:       PetscOptionsHasName(NULL,NULL,"-saws_options",&flg);
    561:       if (flg) {
    562:         PetscStrreplace(PETSC_COMM_WORLD,"${PETSC_DIR}/share/petsc/saws",root,sizeof(root));
    563:         PetscStackCallSAWs(SAWs_Set_Document_Root,(root));
    564:       }
    565:     }
    566:     PetscOptionsHasName(NULL,NULL,"-saws_local",&flg2);
    567:     if (flg2) {
    568:       char jsdir[PETSC_MAX_PATH_LEN];
    569:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"-saws_local option requires -saws_root option");
    570:       PetscSNPrintf(jsdir,sizeof(jsdir),"%s/js",root);
    571:       PetscTestDirectory(jsdir,'r',&flg);
    572:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_READ,"-saws_local option requires js directory in root directory");
    573:       PetscStackCallSAWs(SAWs_Push_Local_Header,());
    574:     }
    575:     PetscGetProgramName(programname,sizeof(programname));
    576:     PetscStrlen(help,&applinelen);
    577:     introlen   = 4096 + applinelen;
    578:     applinelen += 1024;
    579:     PetscMalloc(applinelen,&appline);
    580:     PetscMalloc(introlen,&intro);

    582:     if (rootlocal) {
    583:       PetscSNPrintf(appline,applinelen,"%s.c.html",programname);
    584:       PetscTestFile(appline,'r',&rootlocal);
    585:     }
    586:     PetscOptionsGetAll(NULL,&options);
    587:     if (rootlocal && help) {
    588:       PetscSNPrintf(appline,applinelen,"<center> Running <a href=\"%s.c.html\">%s</a> %s</center><br><center><pre>%s</pre></center><br>\n",programname,programname,options,help);
    589:     } else if (help) {
    590:       PetscSNPrintf(appline,applinelen,"<center>Running %s %s</center><br><center><pre>%s</pre></center><br>",programname,options,help);
    591:     } else {
    592:       PetscSNPrintf(appline,applinelen,"<center> Running %s %s</center><br>\n",programname,options);
    593:     }
    594:     PetscFree(options);
    595:     PetscGetVersion(version,sizeof(version));
    596:     PetscSNPrintf(intro,introlen,"<body>\n"
    597:                                     "<center><h2> <a href=\"https://www.mcs.anl.gov/petsc\">PETSc</a> Application Web server powered by <a href=\"https://bitbucket.org/saws/saws\">SAWs</a> </h2></center>\n"
    598:                                     "<center>This is the default PETSc application dashboard, from it you can access any published PETSc objects or logging data</center><br><center>%s configured with %s</center><br>\n"
    599:                                     "%s",version,petscconfigureoptions,appline);
    600:     PetscStackCallSAWs(SAWs_Push_Body,("index.html",0,intro));
    601:     PetscFree(intro);
    602:     PetscFree(appline);
    603:     if (selectport) {
    604:       PetscBool silent;

    606:       SAWs_Initialize();
    607:       /* another process may have grabbed the port so keep trying */
    608:       while (ierr) {
    609:         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
    610:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    611:         SAWs_Initialize();
    612:       }

    614:       PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select_silent",&silent,NULL);
    615:       if (!silent) {
    616:         PetscStackCallSAWs(SAWs_Get_FullURL,(sizeof(sawsurl),sawsurl));
    617:         PetscPrintf(PETSC_COMM_WORLD,"Point your browser to %s for SAWs\n",sawsurl);
    618:       }
    619:     } else {
    620:       PetscStackCallSAWs(SAWs_Initialize,());
    621:     }
    622:     PetscCitationsRegister("@TechReport{ saws,\n"
    623:                                   "  Author = {Matt Otten and Jed Brown and Barry Smith},\n"
    624:                                   "  Title  = {Scientific Application Web Server (SAWs) Users Manual},\n"
    625:                                   "  Institution = {Argonne National Laboratory},\n"
    626:                                   "  Year   = 2013\n}\n",NULL);
    627:   }
    628:   return(0);
    629: }
    630: #endif

    632: /* Things must be done before MPI_Init() when MPI is not yet initialized, and can be shared between C init and Fortran init */
    633: PETSC_INTERN PetscErrorCode PetscPreMPIInit_Private(void)
    634: {
    636: #if defined(PETSC_HAVE_HWLOC_SOLARIS_BUG)
    637:     /* see MPI.py for details on this bug */
    638:     (void) setenv("HWLOC_COMPONENTS","-x86",1);
    639: #endif
    640:   return(0);
    641: }

    643: #if defined(PETSC_HAVE_ADIOS)
    644: #include <adios.h>
    645: #include <adios_read.h>
    646: int64_t Petsc_adios_group;
    647: #endif
    648: #if defined(PETSC_HAVE_ADIOS2)
    649: #include <adios2_c.h>
    650: #endif
    651: #if defined(PETSC_HAVE_OPENMP)
    652: #include <omp.h>
    653: PetscInt PetscNumOMPThreads;
    654: #endif

    656: #if defined(PETSC_HAVE_DLFCN_H)
    657: #include <dlfcn.h>
    658: #endif

    660: /*@C
    661:    PetscInitialize - Initializes the PETSc database and MPI.
    662:    PetscInitialize() calls MPI_Init() if that has yet to be called,
    663:    so this routine should always be called near the beginning of
    664:    your program -- usually the very first line!

    666:    Collective on MPI_COMM_WORLD or PETSC_COMM_WORLD if it has been set

    668:    Input Parameters:
    669: +  argc - count of number of command line arguments
    670: .  args - the command line arguments
    671: .  file - [optional] PETSc database file, also checks ~/.petscrc, .petscrc and petscrc.
    672:           Use NULL to not check for code specific file.
    673:           Use -skip_petscrc in the code specific file (or command line) to skip ~/.petscrc, .petscrc and petscrc files.
    674: -  help - [optional] Help message to print, use NULL for no message

    676:    If you wish PETSc code to run ONLY on a subcommunicator of MPI_COMM_WORLD, create that
    677:    communicator first and assign it to PETSC_COMM_WORLD BEFORE calling PetscInitialize(). Thus if you are running a
    678:    four process job and two processes will run PETSc and have PetscInitialize() and PetscFinalize() and two process will not,
    679:    then do this. If ALL processes in the job are using PetscInitialize() and PetscFinalize() then you don't need to do this, even
    680:    if different subcommunicators of the job are doing different things with PETSc.

    682:    Options Database Keys:
    683: +  -help [intro] - prints help method for each option; if intro is given the program stops after printing the introductory help message
    684: .  -start_in_debugger [noxterm,dbx,xdb,gdb,...] - Starts program in debugger
    685: .  -on_error_attach_debugger [noxterm,dbx,xdb,gdb,...] - Starts debugger when error detected
    686: .  -on_error_emacs <machinename> - causes emacsclient to jump to error file
    687: .  -on_error_abort - calls abort() when error detected (no traceback)
    688: .  -on_error_mpiabort - calls MPI_abort() when error detected
    689: .  -error_output_stderr - prints error messages to stderr instead of the default stdout
    690: .  -error_output_none - does not print the error messages (but handles errors in the same way as if this was not called)
    691: .  -debugger_ranks [rank1,rank2,...] - Indicates ranks to start in debugger
    692: .  -debugger_pause [sleeptime] (in seconds) - Pauses debugger
    693: .  -stop_for_debugger - Print message on how to attach debugger manually to
    694:                         process and wait (-debugger_pause) seconds for attachment
    695: .  -malloc - Indicates use of PETSc error-checking malloc (on by default for debug version of libraries) (deprecated, use -malloc_debug)
    696: .  -malloc no - Indicates not to use error-checking malloc (deprecated, use -malloc_debug no)
    697: .  -malloc_debug - check for memory corruption at EVERY malloc or free, see PetscMallocSetDebug()
    698: .  -malloc_dump - prints a list of all unfreed memory at the end of the run
    699: .  -malloc_test - like -malloc_dump -malloc_debug, but only active for debugging builds, ignored in optimized build. May want to set in PETSC_OPTIONS environmental variable
    700: .  -malloc_view - show a list of all allocated memory during PetscFinalize()
    701: .  -malloc_view_threshold <t> - only list memory allocations of size greater than t with -malloc_view
    702: .  -malloc_requested_size - malloc logging will record the requested size rather than size after alignment
    703: .  -fp_trap - Stops on floating point exceptions
    704: .  -no_signal_handler - Indicates not to trap error signals
    705: .  -shared_tmp - indicates /tmp directory is shared by all processors
    706: .  -not_shared_tmp - each processor has own /tmp
    707: .  -tmp - alternative name of /tmp directory
    708: .  -get_total_flops - returns total flops done by all processors
    709: -  -memory_view - Print memory usage at end of run

    711:    Options Database Keys for Option Database:
    712: +  -skip_petscrc - skip the default option files ~/.petscrc, .petscrc, petscrc
    713: .  -options_monitor - monitor all set options to standard output for the whole program run
    714: -  -options_monitor_cancel - cancel options monitoring hard-wired using PetscOptionsMonitorSet()

    716:    Options -options_monitor_{all,cancel} are
    717:    position-independent and apply to all options set since the PETSc start.
    718:    They can be used also in option files.

    720:    See PetscOptionsMonitorSet() to do monitoring programmatically.

    722:    Options Database Keys for Profiling:
    723:    See Users-Manual: ch_profiling for details.
    724: +  -info [filename][:[~]<list,of,classnames>[:[~]self]] - Prints verbose information. See PetscInfo().
    725: .  -log_sync - Enable barrier synchronization for all events. This option is useful to debug imbalance within each event,
    726:         however it slows things down and gives a distorted view of the overall runtime.
    727: .  -log_trace [filename] - Print traces of all PETSc calls to the screen (useful to determine where a program
    728:         hangs without running in the debugger).  See PetscLogTraceBegin().
    729: .  -log_view [:filename:format] - Prints summary of flop and timing information to screen or file, see PetscLogView().
    730: .  -log_view_memory - Includes in the summary from -log_view the memory used in each method, see PetscLogView().
    731: .  -log_summary [filename] - (Deprecated, use -log_view) Prints summary of flop and timing information to screen. If the filename is specified the
    732:         summary is written to the file.  See PetscLogView().
    733: .  -log_exclude: <vec,mat,pc,ksp,snes> - excludes subset of object classes from logging
    734: .  -log_all [filename] - Logs extensive profiling information  See PetscLogDump().
    735: .  -log [filename] - Logs basic profiline information  See PetscLogDump().
    736: .  -log_mpe [filename] - Creates a logfile viewable by the utility Jumpshot (in MPICH distribution)
    737: .  -viewfromoptions on,off - Enable or disable XXXSetFromOptions() calls, for applications with many small solves turn this off
    738: -  -check_pointer_intensity 0,1,2 - if pointers are checked for validity (debug version only), using 0 will result in faster code

    740:     Only one of -log_trace, -log_view, -log_view, -log_all, -log, or -log_mpe may be used at a time

    742:    Options Database Keys for SAWs:
    743: +  -saws_port <portnumber> - port number to publish SAWs data, default is 8080
    744: .  -saws_port_auto_select - have SAWs select a new unique port number where it publishes the data, the URL is printed to the screen
    745:                             this is useful when you are running many jobs that utilize SAWs at the same time
    746: .  -saws_log <filename> - save a log of all SAWs communication
    747: .  -saws_https <certificate file> - have SAWs use HTTPS instead of HTTP
    748: -  -saws_root <directory> - allow SAWs to have access to the given directory to search for requested resources and files

    750:    Environmental Variables:
    751: +   PETSC_TMP - alternative tmp directory
    752: .   PETSC_SHARED_TMP - tmp is shared by all processes
    753: .   PETSC_NOT_SHARED_TMP - each process has its own private tmp
    754: .   PETSC_OPTIONS - a string containing additional options for petsc in the form of command line "-key value" pairs
    755: .   PETSC_OPTIONS_YAML - (requires configuring PETSc to use libyaml) a string containing additional options for petsc in the form of a YAML document
    756: .   PETSC_VIEWER_SOCKET_PORT - socket number to use for socket viewer
    757: -   PETSC_VIEWER_SOCKET_MACHINE - machine to use for socket viewer to connect to

    760:    Level: beginner

    762:    Notes:
    763:    If for some reason you must call MPI_Init() separately, call
    764:    it before PetscInitialize().

    766:    Fortran Version:
    767:    In Fortran this routine has the format
    768: $       call PetscInitialize(file,ierr)

    770: +   ierr - error return code
    771: -  file - [optional] PETSc database file, also checks ~/.petscrc, .petscrc and petscrc.
    772:           Use PETSC_NULL_CHARACTER to not check for code specific file.
    773:           Use -skip_petscrc in the code specific file (or command line) to skip ~/.petscrc, .petscrc and petscrc files.

    775:    Important Fortran Note:
    776:    In Fortran, you MUST use PETSC_NULL_CHARACTER to indicate a
    777:    null character string; you CANNOT just use NULL as
    778:    in the C version. See Users-Manual: ch_fortran for details.

    780:    If your main program is C but you call Fortran code that also uses PETSc you need to call PetscInitializeFortran() soon after
    781:    calling PetscInitialize().

    783: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscInitializeNoArguments()

    785: @*/
    786: PetscErrorCode  PetscInitialize(int *argc,char ***args,const char file[],const char help[])
    787: {
    789:   PetscMPIInt    flag, size;
    790:   PetscBool      flg = PETSC_TRUE;
    791:   char           hostname[256];

    794:   if (PetscInitializeCalled) return(0);
    795:   /*
    796:       The checking over compatible runtime libraries is complicated by the MPI ABI initiative
    797:       https://wiki.mpich.org/mpich/index.php/ABI_Compatibility_Initiative which started with
    798:         MPICH v3.1 (Released Feburary 2014)
    799:         IBM MPI v2.1 (December 2014)
    800:         Intel MPI Library v5.0 (2014)
    801:         Cray MPT v7.0.0 (June 2014)
    802:       As of July 31, 2017 the ABI number still appears to be 12, that is all of the versions
    803:       listed above and since that time are compatible.

    805:       Unfortunately the MPI ABI initiative has not defined a way to determine the ABI number
    806:       at compile time or runtime. Thus we will need to systematically track the allowed versions
    807:       and how they are represented in the mpi.h and MPI_Get_library_version() output in order
    808:       to perform the checking.

    810:       Currently we only check for pre MPI ABI versions (and packages that do not follow the MPI ABI).

    812:       Questions:

    814:         Should the checks for ABI incompatibility be only on the major version number below?
    815:         Presumably the output to stderr will be removed before a release.
    816:   */

    818: #if defined(PETSC_HAVE_MPI_GET_LIBRARY_VERSION)
    819:   {
    820:     char        mpilibraryversion[MPI_MAX_LIBRARY_VERSION_STRING];
    821:     PetscMPIInt mpilibraryversionlength;
    822:     MPI_Get_library_version(mpilibraryversion,&mpilibraryversionlength);if (ierr) return ierr;
    823:     /* check for MPICH versions before MPI ABI initiative */
    824: #if defined(MPICH_VERSION)
    825: #if MPICH_NUMVERSION < 30100000
    826:     {
    827:       char *ver,*lf;
    828:       flg = PETSC_FALSE;
    829:       PetscStrstr(mpilibraryversion,"MPICH Version:",&ver);if (ierr) return ierr;
    830:       if (ver) {
    831:         PetscStrchr(ver,'\n',&lf);if (ierr) return ierr;
    832:         if (lf) {
    833:           *lf = 0;
    834:           PetscStrendswith(ver,MPICH_VERSION,&flg);if (ierr) return ierr;
    835:         }
    836:       }
    837:       if (!flg) {
    838:         fprintf(stderr,"PETSc Error --- MPICH library version \n%s does not match what PETSc was compiled with %s, aborting\n",mpilibraryversion,MPICH_VERSION);
    839:         return PETSC_ERR_MPI_LIB_INCOMP;
    840:       }
    841:     }
    842: #endif
    843:     /* check for OpenMPI version, it is not part of the MPI ABI initiative (is it part of another initiative that needs to be handled?) */
    844: #elif defined(OMPI_MAJOR_VERSION)
    845:     {
    846:       char *ver,bs[MPI_MAX_LIBRARY_VERSION_STRING],*bsf;
    847:       flg = PETSC_FALSE;
    848: #define PSTRSZ 2
    849:       char ompistr1[PSTRSZ][MPI_MAX_LIBRARY_VERSION_STRING] = {"Open MPI","FUJITSU MPI"};
    850:       char ompistr2[PSTRSZ][MPI_MAX_LIBRARY_VERSION_STRING] = {"v","Library "};
    851:       int i;
    852:       for (i=0; i<PSTRSZ; i++) {
    853:         PetscStrstr(mpilibraryversion,ompistr1[i],&ver);if (ierr) return ierr;
    854:         if (ver) {
    855:           PetscSNPrintf(bs,MPI_MAX_LIBRARY_VERSION_STRING,"%s%d.%d",ompistr2[i],OMPI_MAJOR_VERSION,OMPI_MINOR_VERSION);
    856:           PetscStrstr(ver,bs,&bsf);if (ierr) return ierr;
    857:           if (bsf) flg = PETSC_TRUE;
    858:           break;
    859:         }
    860:       }
    861:       if (!flg) {
    862:         fprintf(stderr,"PETSc Error --- Open MPI library version \n%s does not match what PETSc was compiled with %d.%d, aborting\n",mpilibraryversion,OMPI_MAJOR_VERSION,OMPI_MINOR_VERSION);
    863:         return PETSC_ERR_MPI_LIB_INCOMP;
    864:       }
    865:     }
    866: #endif
    867:   }
    868: #endif

    870: #if defined(PETSC_HAVE_DLSYM)
    871:   {
    872:     PetscInt cnt = 0;
    873:     /* These symbols are currently in the OpenMPI and MPICH libraries; they may not always be, in that case the test will simply not detect the problem */
    874:     if (dlsym(RTLD_DEFAULT,"ompi_mpi_init")) cnt++;
    875:     if (dlsym(RTLD_DEFAULT,"MPL_exit")) cnt++;
    876:     if (cnt > 1) {
    877:       fprintf(stderr,"PETSc Error --- Application was linked against both OpenMPI and MPICH based MPI libraries and will not run correctly\n");
    878:       return PETSC_ERR_MPI_LIB_INCOMP;
    879:     }
    880:   }
    881: #endif

    883:   /* these must be initialized in a routine, not as a constant declaration*/
    884:   PETSC_STDOUT = stdout;
    885:   PETSC_STDERR = stderr;

    887:   /*CHKERRQ can be used from now */
    888:   PetscErrorHandlingInitialized = PETSC_TRUE;

    890:   /* on Windows - set printf to default to printing 2 digit exponents */
    891: #if defined(PETSC_HAVE__SET_OUTPUT_FORMAT)
    892:   _set_output_format(_TWO_DIGIT_EXPONENT);
    893: #endif

    895:   PetscOptionsCreateDefault();

    897:   /*
    898:      We initialize the program name here (before MPI_Init()) because MPICH has a bug in
    899:      it that it sets args[0] on all processors to be args[0] on the first processor.
    900:   */
    901:   if (argc && *argc) {
    902:     PetscSetProgramName(**args);
    903:   } else {
    904:     PetscSetProgramName("Unknown Name");
    905:   }

    907:   MPI_Initialized(&flag);
    908:   if (!flag) {
    909:     if (PETSC_COMM_WORLD != MPI_COMM_NULL) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"You cannot set PETSC_COMM_WORLD if you have not initialized MPI first");
    910:     PetscPreMPIInit_Private();
    911: #if defined(PETSC_HAVE_MPI_INIT_THREAD)
    912:     {
    913:       PetscMPIInt provided;
    914:       MPI_Init_thread(argc,args,PETSC_MPI_THREAD_REQUIRED,&provided);
    915:     }
    916: #else
    917:     MPI_Init(argc,args);
    918: #endif
    919:     PetscBeganMPI = PETSC_TRUE;
    920:   }

    922:   if (argc && args) {
    923:     PetscGlobalArgc = *argc;
    924:     PetscGlobalArgs = *args;
    925:   }
    926:   PetscFinalizeCalled = PETSC_FALSE;
    927:   PetscSpinlockCreate(&PetscViewerASCIISpinLockOpen);
    928:   PetscSpinlockCreate(&PetscViewerASCIISpinLockStdout);
    929:   PetscSpinlockCreate(&PetscViewerASCIISpinLockStderr);
    930:   PetscSpinlockCreate(&PetscCommSpinLock);

    932:   if (PETSC_COMM_WORLD == MPI_COMM_NULL) PETSC_COMM_WORLD = MPI_COMM_WORLD;
    933:   MPI_Comm_set_errhandler(PETSC_COMM_WORLD,MPI_ERRORS_RETURN);

    935:   if (PETSC_MPI_ERROR_CLASS == MPI_ERR_LASTCODE) {
    936:     MPI_Add_error_class(&PETSC_MPI_ERROR_CLASS);
    937:     MPI_Add_error_code(PETSC_MPI_ERROR_CLASS,&PETSC_MPI_ERROR_CODE);
    938:   }

    940:   /* Done after init due to a bug in MPICH-GM? */
    941:   PetscErrorPrintfInitialize();

    943:   MPI_Comm_rank(MPI_COMM_WORLD,&PetscGlobalRank);
    944:   MPI_Comm_size(MPI_COMM_WORLD,&PetscGlobalSize);

    946:   MPIU_BOOL = MPI_INT;
    947:   MPIU_ENUM = MPI_INT;
    948:   MPIU_FORTRANADDR = (sizeof(void*) == sizeof(int)) ? MPI_INT : MPIU_INT64;
    949:   if (sizeof(size_t) == sizeof(unsigned)) MPIU_SIZE_T = MPI_UNSIGNED;
    950:   else if (sizeof(size_t) == sizeof(unsigned long)) MPIU_SIZE_T = MPI_UNSIGNED_LONG;
    951: #if defined(PETSC_SIZEOF_LONG_LONG)
    952:   else if (sizeof(size_t) == sizeof(unsigned long long)) MPIU_SIZE_T = MPI_UNSIGNED_LONG_LONG;
    953: #endif
    954:   else {(*PetscErrorPrintf)("PetscInitialize: Could not find MPI type for size_t\n"); return PETSC_ERR_SUP_SYS;}

    956:   /*
    957:      Initialized the global complex variable; this is because with
    958:      shared libraries the constructors for global variables
    959:      are not called; at least on IRIX.
    960:   */
    961: #if defined(PETSC_HAVE_COMPLEX)
    962:   {
    963: #if defined(PETSC_CLANGUAGE_CXX) && !defined(PETSC_USE_REAL___FLOAT128)
    964:     PetscComplex ic(0.0,1.0);
    965:     PETSC_i = ic;
    966: #else
    967:     PETSC_i = _Complex_I;
    968: #endif
    969:   }

    971: #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
    972:   MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU_C_DOUBLE_COMPLEX);
    973:   MPI_Type_commit(&MPIU_C_DOUBLE_COMPLEX);
    974:   MPI_Type_contiguous(2,MPI_FLOAT,&MPIU_C_COMPLEX);
    975:   MPI_Type_commit(&MPIU_C_COMPLEX);
    976: #endif
    977: #endif /* PETSC_HAVE_COMPLEX */

    979:   /*
    980:      Create the PETSc MPI reduction operator that sums of the first
    981:      half of the entries and maxes the second half.
    982:   */
    983:   MPI_Op_create(MPIU_MaxSum_Local,1,&MPIU_MAXSUM_OP);

    985: #if defined(PETSC_USE_REAL___FLOAT128)
    986:   MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU___FLOAT128);
    987:   MPI_Type_commit(&MPIU___FLOAT128);
    988: #if defined(PETSC_HAVE_COMPLEX)
    989:   MPI_Type_contiguous(4,MPI_DOUBLE,&MPIU___COMPLEX128);
    990:   MPI_Type_commit(&MPIU___COMPLEX128);
    991: #endif
    992:   MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);
    993:   MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);
    994: #elif defined(PETSC_USE_REAL___FP16)
    995:   MPI_Type_contiguous(2,MPI_CHAR,&MPIU___FP16);
    996:   MPI_Type_commit(&MPIU___FP16);
    997:   MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);
    998:   MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);
    999: #endif

    1001: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    1002:   MPI_Op_create(PetscSum_Local,1,&MPIU_SUM);
    1003: #endif

    1005:   MPI_Type_contiguous(2,MPIU_SCALAR,&MPIU_2SCALAR);
    1006:   MPI_Type_commit(&MPIU_2SCALAR);

    1008: #if defined(PETSC_USE_64BIT_INDICES)
    1009:   MPI_Type_contiguous(2,MPIU_INT,&MPIU_2INT);
    1010:   MPI_Type_commit(&MPIU_2INT);
    1011: #endif

    1013:   /*
    1014:      Attributes to be set on PETSc communicators
    1015:   */
    1016:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_Counter_Attr_Delete_Fn,&Petsc_Counter_keyval,(void*)0);
    1017:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_InnerComm_Attr_Delete_Fn,&Petsc_InnerComm_keyval,(void*)0);
    1018:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_OuterComm_Attr_Delete_Fn,&Petsc_OuterComm_keyval,(void*)0);
    1019:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_ShmComm_Attr_Delete_Fn,&Petsc_ShmComm_keyval,(void*)0);

    1021:   /*
    1022:      Build the options database
    1023:   */
    1024:   PetscOptionsInsert(NULL,argc,args,file);

    1026:   /* call a second time so it can look in the options database */
    1027:   PetscErrorPrintfInitialize();

    1029:   /*
    1030:      Check system options and print help
    1031:   */
    1032:   PetscOptionsCheckInitial_Private(help);

    1034:   PetscCitationsInitialize();

    1036: #if defined(PETSC_HAVE_SAWS)
    1037:   PetscInitializeSAWs(help);
    1038: #endif

    1040:   /*
    1041:      Load the dynamic libraries (on machines that support them), this registers all
    1042:      the solvers etc. (On non-dynamic machines this initializes the PetscDraw and PetscViewer classes)
    1043:   */
    1044:   PetscInitialize_DynamicLibraries();

    1046:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
    1047:   PetscInfo1(NULL,"PETSc successfully started: number of processors = %d\n",size);
    1048:   PetscGetHostName(hostname,256);
    1049:   PetscInfo1(NULL,"Running on machine: %s\n",hostname);
    1050: #if defined(PETSC_HAVE_OPENMP)
    1051:   {
    1052:     PetscBool omp_view_flag;
    1053:     char      *threads = getenv("OMP_NUM_THREADS");

    1055:    if (threads) {
    1056:      PetscInfo1(NULL,"Number of OpenMP threads %s (given by OMP_NUM_THREADS)\n",threads);
    1057:      (void) sscanf(threads, "%" PetscInt_FMT,&PetscNumOMPThreads);
    1058:    } else {
    1059: #define NMAX  10000
    1060:      int          i;
    1061:       PetscScalar *x;
    1062:       PetscMalloc1(NMAX,&x);
    1063: #pragma omp parallel for
    1064:       for (i=0; i<NMAX; i++) {
    1065:         x[i] = 0.0;
    1066:         PetscNumOMPThreads  = (PetscInt) omp_get_num_threads();
    1067:       }
    1068:       PetscFree(x);
    1069:       PetscInfo1(NULL,"Number of OpenMP threads %D (number not set with OMP_NUM_THREADS, chosen by system)\n",PetscNumOMPThreads);
    1070:     }
    1071:     PetscOptionsBegin(PETSC_COMM_WORLD,NULL,"OpenMP options","Sys");
    1072:     PetscOptionsInt("-omp_num_threads","Number of OpenMP threads to use (can also use environmental variable OMP_NUM_THREADS","None",PetscNumOMPThreads,&PetscNumOMPThreads,&flg);
    1073:     PetscOptionsName("-omp_view","Display OpenMP number of threads",NULL,&omp_view_flag);
    1074:     PetscOptionsEnd();
    1075:     if (flg) {
    1076:       PetscInfo1(NULL,"Number of OpenMP theads %D (given by -omp_num_threads)\n",PetscNumOMPThreads);
    1077:       omp_set_num_threads((int)PetscNumOMPThreads);
    1078:     }
    1079:     if (omp_view_flag) {
    1080:       PetscPrintf(PETSC_COMM_WORLD,"OpenMP: number of threads %D\n",PetscNumOMPThreads);
    1081:     }
    1082:   }
    1083: #endif

    1085: #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
    1086:   /*
    1087:       Tell MPI about our own data representation converter, this would/should be used if extern32 is not supported by the MPI

    1089:       Currently not used because it is not supported by MPICH.
    1090:   */
    1091:   if (!PetscBinaryBigEndian()) {
    1092:     MPI_Register_datarep((char*)"petsc",PetscDataRep_read_conv_fn,PetscDataRep_write_conv_fn,PetscDataRep_extent_fn,NULL);
    1093:   }
    1094: #endif

    1096:   /*
    1097:       Setup building of stack frames for all function calls
    1098:   */
    1099: #if defined(PETSC_USE_DEBUG) && !defined(PETSC_HAVE_THREADSAFETY)
    1100:   PetscStackCreate();
    1101: #endif

    1103: #if defined(PETSC_SERIALIZE_FUNCTIONS)
    1104:   PetscFPTCreate(10000);
    1105: #endif

    1107: #if defined(PETSC_HAVE_HWLOC)
    1108:   {
    1109:     PetscViewer viewer;
    1110:     PetscOptionsGetViewer(PETSC_COMM_WORLD,NULL,NULL,"-process_view",&viewer,NULL,&flg);
    1111:     if (flg) {
    1112:       PetscProcessPlacementView(viewer);
    1113:       PetscViewerDestroy(&viewer);
    1114:     }
    1115:   }
    1116: #endif

    1118:   flg = PETSC_TRUE;
    1119:   PetscOptionsGetBool(NULL,NULL,"-viewfromoptions",&flg,NULL);
    1120:   if (!flg) {PetscOptionsPushGetViewerOff(PETSC_TRUE);}

    1122: #if defined(PETSC_HAVE_ADIOS)
    1123:   adios_init_noxml(PETSC_COMM_WORLD);
    1124:   adios_declare_group(&Petsc_adios_group,"PETSc","",adios_stat_default);
    1125:   adios_select_method(Petsc_adios_group,"MPI","","");
    1126:   adios_read_init_method(ADIOS_READ_METHOD_BP,PETSC_COMM_WORLD,"");
    1127: #endif
    1128: #if defined(PETSC_HAVE_ADIOS2)
    1129: #endif

    1131:   /*
    1132:       Set flag that we are completely initialized
    1133:   */
    1134:   PetscInitializeCalled = PETSC_TRUE;

    1136:   PetscOptionsHasName(NULL,NULL,"-python",&flg);
    1137:   if (flg) {PetscPythonInitialize(NULL,NULL);}
    1138:   return(0);
    1139: }

    1141: #if defined(PETSC_USE_LOG)
    1142: PETSC_INTERN PetscObject *PetscObjects;
    1143: PETSC_INTERN PetscInt    PetscObjectsCounts;
    1144: PETSC_INTERN PetscInt    PetscObjectsMaxCounts;
    1145: PETSC_INTERN PetscBool   PetscObjectsLog;
    1146: #endif

    1148: /*
    1149:     Frees all the MPI types and operations that PETSc may have created
    1150: */
    1151: PetscErrorCode  PetscFreeMPIResources(void)
    1152: {

    1156: #if defined(PETSC_USE_REAL___FLOAT128)
    1157:   MPI_Type_free(&MPIU___FLOAT128);
    1158: #if defined(PETSC_HAVE_COMPLEX)
    1159:   MPI_Type_free(&MPIU___COMPLEX128);
    1160: #endif
    1161:   MPI_Op_free(&MPIU_MAX);
    1162:   MPI_Op_free(&MPIU_MIN);
    1163: #elif defined(PETSC_USE_REAL___FP16)
    1164:   MPI_Type_free(&MPIU___FP16);
    1165:   MPI_Op_free(&MPIU_MAX);
    1166:   MPI_Op_free(&MPIU_MIN);
    1167: #endif

    1169: #if defined(PETSC_HAVE_COMPLEX)
    1170: #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
    1171:   MPI_Type_free(&MPIU_C_DOUBLE_COMPLEX);
    1172:   MPI_Type_free(&MPIU_C_COMPLEX);
    1173: #endif
    1174: #endif

    1176: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    1177:   MPI_Op_free(&MPIU_SUM);
    1178: #endif

    1180:   MPI_Type_free(&MPIU_2SCALAR);
    1181: #if defined(PETSC_USE_64BIT_INDICES)
    1182:   MPI_Type_free(&MPIU_2INT);
    1183: #endif
    1184:   MPI_Op_free(&MPIU_MAXSUM_OP);
    1185:   return(0);
    1186: }

    1188: /*@C
    1189:    PetscFinalize - Checks for options to be called at the conclusion
    1190:    of the program. MPI_Finalize() is called only if the user had not
    1191:    called MPI_Init() before calling PetscInitialize().

    1193:    Collective on PETSC_COMM_WORLD

    1195:    Options Database Keys:
    1196: +  -options_view - Calls PetscOptionsView()
    1197: .  -options_left - Prints unused options that remain in the database
    1198: .  -objects_dump [all] - Prints list of objects allocated by the user that have not been freed, the option all cause all outstanding objects to be listed
    1199: .  -mpidump - Calls PetscMPIDump()
    1200: .  -malloc_dump <optional filename> - Calls PetscMallocDump(), displays all memory allocated that has not been freed
    1201: .  -malloc_info - Prints total memory usage
    1202: -  -malloc_view <optional filename> - Prints list of all memory allocated and where

    1204:    Level: beginner

    1206:    Note:
    1207:    See PetscInitialize() for more general runtime options.

    1209: .seealso: PetscInitialize(), PetscOptionsView(), PetscMallocDump(), PetscMPIDump(), PetscEnd()
    1210: @*/
    1211: PetscErrorCode  PetscFinalize(void)
    1212: {
    1214:   PetscMPIInt    rank;
    1215:   PetscInt       nopt;
    1216:   PetscBool      flg1 = PETSC_FALSE,flg2 = PETSC_FALSE,flg3 = PETSC_FALSE;
    1217:   PetscBool      flg;
    1218: #if defined(PETSC_USE_LOG)
    1219:   char           mname[PETSC_MAX_PATH_LEN];
    1220: #endif

    1222:   if (!PetscInitializeCalled) {
    1223:     printf("PetscInitialize() must be called before PetscFinalize()\n");
    1224:     return(PETSC_ERR_ARG_WRONGSTATE);
    1225:   }
    1227:   PetscInfo(NULL,"PetscFinalize() called\n");

    1229:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
    1230: #if defined(PETSC_HAVE_ADIOS)
    1231:   adios_read_finalize_method(ADIOS_READ_METHOD_BP_AGGREGATE);
    1232:   adios_finalize(rank);
    1233: #endif
    1234: #if defined(PETSC_HAVE_ADIOS2)
    1235: #endif
    1236:   PetscOptionsHasName(NULL,NULL,"-citations",&flg);
    1237:   if (flg) {
    1238:     char  *cits, filename[PETSC_MAX_PATH_LEN];
    1239:     FILE  *fd = PETSC_STDOUT;

    1241:     PetscOptionsGetString(NULL,NULL,"-citations",filename,sizeof(filename),NULL);
    1242:     if (filename[0]) {
    1243:       PetscFOpen(PETSC_COMM_WORLD,filename,"w",&fd);
    1244:     }
    1245:     PetscSegBufferGet(PetscCitationsList,1,&cits);
    1246:     cits[0] = 0;
    1247:     PetscSegBufferExtractAlloc(PetscCitationsList,&cits);
    1248:     PetscFPrintf(PETSC_COMM_WORLD,fd,"If you publish results based on this computation please cite the following:\n");
    1249:     PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");
    1250:     PetscFPrintf(PETSC_COMM_WORLD,fd,"%s",cits);
    1251:     PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");
    1252:     PetscFClose(PETSC_COMM_WORLD,fd);
    1253:     PetscFree(cits);
    1254:   }
    1255:   PetscSegBufferDestroy(&PetscCitationsList);

    1257: #if defined(PETSC_HAVE_SSL) && defined(PETSC_USE_SOCKET_VIEWER)
    1258:   /* TextBelt is run for testing purposes only, please do not use this feature often */
    1259:   {
    1260:     PetscInt nmax = 2;
    1261:     char     **buffs;
    1262:     PetscMalloc1(2,&buffs);
    1263:     PetscOptionsGetStringArray(NULL,NULL,"-textbelt",buffs,&nmax,&flg1);
    1264:     if (flg1) {
    1265:       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-textbelt requires either the phone number or number,\"message\"");
    1266:       if (nmax == 1) {
    1267:         PetscMalloc1(128,&buffs[1]);
    1268:         PetscGetProgramName(buffs[1],32);
    1269:         PetscStrcat(buffs[1]," has completed");
    1270:       }
    1271:       PetscTextBelt(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);
    1272:       PetscFree(buffs[0]);
    1273:       PetscFree(buffs[1]);
    1274:     }
    1275:     PetscFree(buffs);
    1276:   }
    1277:   {
    1278:     PetscInt nmax = 2;
    1279:     char     **buffs;
    1280:     PetscMalloc1(2,&buffs);
    1281:     PetscOptionsGetStringArray(NULL,NULL,"-tellmycell",buffs,&nmax,&flg1);
    1282:     if (flg1) {
    1283:       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-tellmycell requires either the phone number or number,\"message\"");
    1284:       if (nmax == 1) {
    1285:         PetscMalloc1(128,&buffs[1]);
    1286:         PetscGetProgramName(buffs[1],32);
    1287:         PetscStrcat(buffs[1]," has completed");
    1288:       }
    1289:       PetscTellMyCell(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);
    1290:       PetscFree(buffs[0]);
    1291:       PetscFree(buffs[1]);
    1292:     }
    1293:     PetscFree(buffs);
    1294:   }
    1295: #endif

    1297: #if defined(PETSC_SERIALIZE_FUNCTIONS)
    1298:   PetscFPTDestroy();
    1299: #endif

    1301: #if defined(PETSC_HAVE_SAWS)
    1302:   flg = PETSC_FALSE;
    1303:   PetscOptionsGetBool(NULL,NULL,"-saw_options",&flg,NULL);
    1304:   if (flg) {
    1305:     PetscOptionsSAWsDestroy();
    1306:   }
    1307: #endif

    1309: #if defined(PETSC_HAVE_X)
    1310:   flg1 = PETSC_FALSE;
    1311:   PetscOptionsGetBool(NULL,NULL,"-x_virtual",&flg1,NULL);
    1312:   if (flg1) {
    1313:     /*  this is a crude hack, but better than nothing */
    1314:     PetscPOpen(PETSC_COMM_WORLD,NULL,"pkill -9 Xvfb","r",NULL);
    1315:   }
    1316: #endif

    1318: #if !defined(PETSC_HAVE_THREADSAFETY)
    1319:   PetscOptionsGetBool(NULL,NULL,"-malloc_info",&flg2,NULL);
    1320:   if (!flg2) {
    1321:     flg2 = PETSC_FALSE;
    1322:     PetscOptionsGetBool(NULL,NULL,"-memory_view",&flg2,NULL);
    1323:   }
    1324:   if (flg2) {
    1325:     PetscMemoryView(PETSC_VIEWER_STDOUT_WORLD,"Summary of Memory Usage in PETSc\n");
    1326:   }
    1327: #endif

    1329: #if defined(PETSC_USE_LOG)
    1330:   flg1 = PETSC_FALSE;
    1331:   PetscOptionsGetBool(NULL,NULL,"-get_total_flops",&flg1,NULL);
    1332:   if (flg1) {
    1333:     PetscLogDouble flops = 0;
    1334:     MPI_Reduce(&petsc_TotalFlops,&flops,1,MPI_DOUBLE,MPI_SUM,0,PETSC_COMM_WORLD);
    1335:     PetscPrintf(PETSC_COMM_WORLD,"Total flops over all processors %g\n",flops);
    1336:   }
    1337: #endif

    1340: #if defined(PETSC_USE_LOG)
    1341: #if defined(PETSC_HAVE_MPE)
    1342:   mname[0] = 0;
    1343:   PetscOptionsGetString(NULL,NULL,"-log_mpe",mname,sizeof(mname),&flg1);
    1344:   if (flg1) {
    1345:     if (mname[0]) {PetscLogMPEDump(mname);}
    1346:     else          {PetscLogMPEDump(0);}
    1347:   }
    1348: #endif
    1349: #endif

    1351:   /*
    1352:      Free all objects registered with PetscObjectRegisterDestroy() such as PETSC_VIEWER_XXX_().
    1353:   */
    1354:   PetscObjectRegisterDestroyAll();

    1356: #if defined(PETSC_USE_LOG)
    1357:   PetscOptionsPushGetViewerOff(PETSC_FALSE);
    1358:   PetscLogViewFromOptions();
    1359:   PetscOptionsPopGetViewerOff();

    1361:   mname[0] = 0;
    1362:   PetscOptionsGetString(NULL,NULL,"-log_summary",mname,sizeof(mname),&flg1);
    1363:   if (flg1) {
    1364:     PetscViewer viewer;
    1365:     (*PetscHelpPrintf)(PETSC_COMM_WORLD,"\n\n WARNING:   -log_summary is being deprecated; switch to -log_view\n\n\n");
    1366:     if (mname[0]) {
    1367:       PetscViewerASCIIOpen(PETSC_COMM_WORLD,mname,&viewer);
    1368:       PetscLogView(viewer);
    1369:       PetscViewerDestroy(&viewer);
    1370:     } else {
    1371:       viewer = PETSC_VIEWER_STDOUT_WORLD;
    1372:       PetscViewerPushFormat(viewer,PETSC_VIEWER_DEFAULT);
    1373:       PetscLogView(viewer);
    1374:       PetscViewerPopFormat(viewer);
    1375:     }
    1376:   }

    1378:   /*
    1379:      Free any objects created by the last block of code.
    1380:   */
    1381:   PetscObjectRegisterDestroyAll();

    1383:   mname[0] = 0;
    1384:   PetscOptionsGetString(NULL,NULL,"-log_all",mname,sizeof(mname),&flg1);
    1385:   PetscOptionsGetString(NULL,NULL,"-log",mname,sizeof(mname),&flg2);
    1386:   if (flg1 || flg2) {PetscLogDump(mname);}
    1387: #endif

    1389:   PetscStackDestroy();

    1391:   flg1 = PETSC_FALSE;
    1392:   PetscOptionsGetBool(NULL,NULL,"-no_signal_handler",&flg1,NULL);
    1393:   if (!flg1) { PetscPopSignalHandler();}
    1394:   flg1 = PETSC_FALSE;
    1395:   PetscOptionsGetBool(NULL,NULL,"-mpidump",&flg1,NULL);
    1396:   if (flg1) {
    1397:     PetscMPIDump(stdout);
    1398:   }
    1399:   flg1 = PETSC_FALSE;
    1400:   flg2 = PETSC_FALSE;
    1401:   /* preemptive call to avoid listing this option in options table as unused */
    1402:   PetscOptionsHasName(NULL,NULL,"-malloc_dump",&flg1);
    1403:   PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);
    1404:   PetscOptionsGetBool(NULL,NULL,"-options_view",&flg2,NULL);

    1406:   if (flg2) {
    1407:     PetscViewer viewer;
    1408:     PetscViewerCreate(PETSC_COMM_WORLD,&viewer);
    1409:     PetscViewerSetType(viewer,PETSCVIEWERASCII);
    1410:     PetscOptionsView(NULL,viewer);
    1411:     PetscViewerDestroy(&viewer);
    1412:   }

    1414:   /* to prevent PETSc -options_left from warning */
    1415:   PetscOptionsHasName(NULL,NULL,"-nox",&flg1);
    1416:   PetscOptionsHasName(NULL,NULL,"-nox_warning",&flg1);

    1418:   flg3 = PETSC_FALSE; /* default value is required */
    1419:   PetscOptionsGetBool(NULL,NULL,"-options_left",&flg3,&flg1);
    1420:   if (PetscUnlikelyDebug(!flg1)) flg3 = PETSC_TRUE;
    1421:   if (flg3) {
    1422:     if (!flg2 && flg1) { /* have not yet printed the options */
    1423:       PetscViewer viewer;
    1424:       PetscViewerCreate(PETSC_COMM_WORLD,&viewer);
    1425:       PetscViewerSetType(viewer,PETSCVIEWERASCII);
    1426:       PetscOptionsView(NULL,viewer);
    1427:       PetscViewerDestroy(&viewer);
    1428:     }
    1429:     PetscOptionsAllUsed(NULL,&nopt);
    1430:     if (nopt) {
    1431:       PetscPrintf(PETSC_COMM_WORLD,"WARNING! There are options you set that were not used!\n");
    1432:       PetscPrintf(PETSC_COMM_WORLD,"WARNING! could be spelling mistake, etc!\n");
    1433:       if (nopt == 1) {
    1434:         PetscPrintf(PETSC_COMM_WORLD,"There is one unused database option. It is:\n");
    1435:       } else {
    1436:         PetscPrintf(PETSC_COMM_WORLD,"There are %D unused database options. They are:\n",nopt);
    1437:       }
    1438:     } else if (flg3 && flg1) {
    1439:       PetscPrintf(PETSC_COMM_WORLD,"There are no unused options.\n");
    1440:     }
    1441:     PetscOptionsLeft(NULL);
    1442:   }

    1444: #if defined(PETSC_HAVE_SAWS)
    1445:   if (!PetscGlobalRank) {
    1446:     PetscStackSAWsViewOff();
    1447:     PetscStackCallSAWs(SAWs_Finalize,());
    1448:   }
    1449: #endif

    1451: #if defined(PETSC_USE_LOG)
    1452:   /*
    1453:        List all objects the user may have forgot to free
    1454:   */
    1455:   if (PetscObjectsLog) {
    1456:     PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);
    1457:     if (flg1) {
    1458:       MPI_Comm local_comm;
    1459:       char     string[64];

    1461:       PetscOptionsGetString(NULL,NULL,"-objects_dump",string,sizeof(string),NULL);
    1462:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1463:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1464:       PetscObjectsDump(stdout,(string[0] == 'a') ? PETSC_TRUE : PETSC_FALSE);
    1465:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1466:       MPI_Comm_free(&local_comm);
    1467:     }
    1468:   }
    1469: #endif

    1471: #if defined(PETSC_USE_LOG)
    1472:   PetscObjectsCounts    = 0;
    1473:   PetscObjectsMaxCounts = 0;
    1474:   PetscFree(PetscObjects);
    1475: #endif

    1477:   /*
    1478:      Destroy any packages that registered a finalize
    1479:   */
    1480:   PetscRegisterFinalizeAll();

    1482: #if defined(PETSC_USE_LOG)
    1483:   PetscLogFinalize();
    1484: #endif

    1486:   /*
    1487:      Print PetscFunctionLists that have not been properly freed

    1489:   PetscFunctionListPrintAll();
    1490:   */

    1492:   if (petsc_history) {
    1493:     PetscCloseHistoryFile(&petsc_history);
    1494:     petsc_history = NULL;
    1495:   }
    1496:   PetscOptionsHelpPrintedDestroy(&PetscOptionsHelpPrintedSingleton);
    1497:   PetscInfoDestroy();

    1499: #if !defined(PETSC_HAVE_THREADSAFETY)
    1500:   if (!(PETSC_RUNNING_ON_VALGRIND)) {
    1501:     char fname[PETSC_MAX_PATH_LEN];
    1502:     char sname[PETSC_MAX_PATH_LEN];
    1503:     FILE *fd;
    1504:     int  err;

    1506:     flg2 = PETSC_FALSE;
    1507:     flg3 = PETSC_FALSE;
    1508:     if (PetscDefined(USE_DEBUG)) {PetscOptionsGetBool(NULL,NULL,"-malloc_test",&flg2,NULL);}
    1509:     PetscOptionsGetBool(NULL,NULL,"-malloc_debug",&flg3,NULL);
    1510:     fname[0] = 0;
    1511:     PetscOptionsGetString(NULL,NULL,"-malloc_dump",fname,sizeof(fname),&flg1);
    1512:     if (flg1 && fname[0]) {

    1514:       PetscSNPrintf(sname,sizeof(sname),"%s_%d",fname,rank);
    1515:       fd   = fopen(sname,"w"); if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",sname);
    1516:       PetscMallocDump(fd);
    1517:       err  = fclose(fd);
    1518:       if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
    1519:     } else if (flg1 || flg2 || flg3) {
    1520:       MPI_Comm local_comm;

    1522:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1523:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1524:       PetscMallocDump(stdout);
    1525:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1526:       MPI_Comm_free(&local_comm);
    1527:     }
    1528:     fname[0] = 0;
    1529:     PetscOptionsGetString(NULL,NULL,"-malloc_view",fname,sizeof(fname),&flg1);
    1530:     if (flg1 && fname[0]) {

    1532:       PetscSNPrintf(sname,sizeof(sname),"%s_%d",fname,rank);
    1533:       fd   = fopen(sname,"w"); if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",sname);
    1534:       PetscMallocView(fd);
    1535:       err  = fclose(fd);
    1536:       if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
    1537:     } else if (flg1) {
    1538:       MPI_Comm local_comm;

    1540:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1541:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1542:       PetscMallocView(stdout);
    1543:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1544:       MPI_Comm_free(&local_comm);
    1545:     }
    1546:   }
    1547: #endif

    1549:   /*
    1550:      Close any open dynamic libraries
    1551:   */
    1552:   PetscFinalize_DynamicLibraries();

    1554:   /* Can be destroyed only after all the options are used */
    1555:   PetscOptionsDestroyDefault();

    1557:   PetscGlobalArgc = 0;
    1558:   PetscGlobalArgs = NULL;

    1560: #if defined(PETSC_HAVE_KOKKOS)
    1561:   if (PetscBeganKokkos) {
    1562:     PetscKokkosFinalize_Private();
    1563:     PetscBeganKokkos = PETSC_FALSE;
    1564:   }
    1565: #endif

    1567:   PetscFreeMPIResources();

    1569:   /*
    1570:      Destroy any known inner MPI_Comm's and attributes pointing to them
    1571:      Note this will not destroy any new communicators the user has created.

    1573:      If all PETSc objects were not destroyed those left over objects will have hanging references to
    1574:      the MPI_Comms that were freed; but that is ok because those PETSc objects will never be used again
    1575:  */
    1576:   {
    1577:     PetscCommCounter *counter;
    1578:     PetscMPIInt      flg;
    1579:     MPI_Comm         icomm;
    1580:     union {MPI_Comm comm; void *ptr;} ucomm;
    1581:     MPI_Comm_get_attr(PETSC_COMM_SELF,Petsc_InnerComm_keyval,&ucomm,&flg);
    1582:     if (flg) {
    1583:       icomm = ucomm.comm;
    1584:       MPI_Comm_get_attr(icomm,Petsc_Counter_keyval,&counter,&flg);
    1585:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");

    1587:       MPI_Comm_delete_attr(PETSC_COMM_SELF,Petsc_InnerComm_keyval);
    1588:       MPI_Comm_delete_attr(icomm,Petsc_Counter_keyval);
    1589:       MPI_Comm_free(&icomm);
    1590:     }
    1591:     MPI_Comm_get_attr(PETSC_COMM_WORLD,Petsc_InnerComm_keyval,&ucomm,&flg);
    1592:     if (flg) {
    1593:       icomm = ucomm.comm;
    1594:       MPI_Comm_get_attr(icomm,Petsc_Counter_keyval,&counter,&flg);
    1595:       if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");

    1597:       MPI_Comm_delete_attr(PETSC_COMM_WORLD,Petsc_InnerComm_keyval);
    1598:       MPI_Comm_delete_attr(icomm,Petsc_Counter_keyval);
    1599:       MPI_Comm_free(&icomm);
    1600:     }
    1601:   }

    1603:   MPI_Comm_free_keyval(&Petsc_Counter_keyval);
    1604:   MPI_Comm_free_keyval(&Petsc_InnerComm_keyval);
    1605:   MPI_Comm_free_keyval(&Petsc_OuterComm_keyval);
    1606:   MPI_Comm_free_keyval(&Petsc_ShmComm_keyval);

    1608:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockOpen);
    1609:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockStdout);
    1610:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockStderr);
    1611:   PetscSpinlockDestroy(&PetscCommSpinLock);

    1613:   if (PetscBeganMPI) {
    1614: #if defined(PETSC_HAVE_MPI_FINALIZED)
    1615:     PetscMPIInt flag;
    1616:     MPI_Finalized(&flag);
    1617:     if (flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"MPI_Finalize() has already been called, even though MPI_Init() was called by PetscInitialize()");
    1618: #endif
    1619:     MPI_Finalize();
    1620:   }
    1621: /*

    1623:      Note: In certain cases PETSC_COMM_WORLD is never MPI_Comm_free()ed because
    1624:    the communicator has some outstanding requests on it. Specifically if the
    1625:    flag PETSC_HAVE_BROKEN_REQUEST_FREE is set (for IBM MPI implementation). See
    1626:    src/vec/utils/vpscat.c. Due to this the memory allocated in PetscCommDuplicate()
    1627:    is never freed as it should be. Thus one may obtain messages of the form
    1628:    [ 1] 8 bytes PetscCommDuplicate() line 645 in src/sys/mpiu.c indicating the
    1629:    memory was not freed.

    1631: */
    1632:   PetscMallocClear();

    1634:   PetscErrorHandlingInitialized = PETSC_FALSE;
    1635:   PetscInitializeCalled = PETSC_FALSE;
    1636:   PetscFinalizeCalled   = PETSC_TRUE;
    1637: #if defined(PETSC_USE_GCOV)
    1638:   /*
    1639:      flush gcov, otherwise during CI the flushing continues into the next pipeline resulting in git not being able to delete directories since the
    1640:      gcov files are still being added to the directories as git tries to remove the directories.
    1641:    */
    1642:   __gcov_flush();
    1643: #endif
    1644:   return(0);
    1645: }

    1647: #if defined(PETSC_MISSING_LAPACK_lsame_)
    1648: PETSC_EXTERN int lsame_(char *a,char *b)
    1649: {
    1650:   if (*a == *b) return 1;
    1651:   if (*a + 32 == *b) return 1;
    1652:   if (*a - 32 == *b) return 1;
    1653:   return 0;
    1654: }
    1655: #endif

    1657: #if defined(PETSC_MISSING_LAPACK_lsame)
    1658: PETSC_EXTERN int lsame(char *a,char *b)
    1659: {
    1660:   if (*a == *b) return 1;
    1661:   if (*a + 32 == *b) return 1;
    1662:   if (*a - 32 == *b) return 1;
    1663:   return 0;
    1664: }
    1665: #endif