__TOC__

## MPIEXEC Variables

**MPIEXEC_DEBUG:**

**MPIEXEC_LOCALONLY:**

**MPIEXEC_MACHINES_PATH:**

**MPIEXEC_NOPROMPT:**

**MPIEXEC_PORTRANGE:**

**MPIEXEC_PORT_RANGE:**

**MPIEXEC_RSH:**

**MPIEXEC_RSH_NO_ESCAPE:**

**MPIEXEC_SMPD_PORT:**

**MPIEXEC_TIMEOUT:**

**MPIEXEC_USE_PORT:**

## Hydra Process Manager Variables

**HYDRA_BOOTSTRAP:**

**HYDRA_HOST_FILE:**

## SMPD Process Manager Variables

**SMPD_DBG_LOG_FILENAME:**

**SMPD_DBG_OUTPUT:**

**SMPD_MAX_LOG_FILE_SIZE:**

## MPICH Sockets Variables

**MPICH_SOCKET_BUFFER_SIZE:**

**MPICH_SOCKET_NUM_PREPOSTED_ACCEPTS:**

**MPICH_SOCKET_RBUFFER_SIZE:**

**MPICH_SOCKET_SBUFFER_SIZE:**

## IBM Blue Gene Variables

**DCMF_ALLGATHER:**

**DCMF_ALLGATHERV:**

**DCMF_ALLREDUCE:**

**DCMF_ALLREDUCE_REUSE_STORAGE:**

**DCMF_ALLTOALL:**

**DCMF_ALLTOALLV:**

**DCMF_ALLTOALLV_PREMALLOC:**

**DCMF_ALLTOALLW:**

**DCMF_ALLTOALLW_PREMALLOC:**

**DCMF_ALLTOALL_PREMALLOC:**

**DCMF_BARRIER:**

**DCMF_BCAST:**

**DCMF_COLLECTIVE:**

**DCMF_COLLECTIVES:**

**DCMF_EAGER:**

**DCMF_GATHER:**

**DCMF_INTERRUPT:**

**DCMF_INTERRUPTS:**

**DCMF_LOCALBARRIER:**

**DCMF_NUMCOLORS:**

**DCMF_NUMREQUESTS:**

**DCMF_OPTRVZ:**

**DCMF_OPTRZV:**

**DCMF_REDUCE:**

**DCMF_REDUCESCATTER:**

**DCMF_REDUCE_REUSE_STORAGE:**

**DCMF_RMA_PENDING:**

**DCMF_RVZ:**

**DCMF_RZV:**

**DCMF_SCATTER:**

**DCMF_SCATTERV:**

**DCMF_SENDER_SIDE_MATCHING:**

**DCMF_SSM:**

**DCMF_STATISTICS:**

**DCMF_TOPOLOGY:**

**DCMF_VERBOSE:**

## SCTP Variables

**MPICH_SCTP_BINDALL:**

**MPICH_SCTP_BUFFER_SIZE:**

**MPICH_SCTP_MULTIHOME_FILE:**

**MPICH_SCTP_NAGLE_ON:**

## MPI-I/O Variables

**MPIO_DIRECT_READ:**

**MPIO_DIRECT_WRITE:**

## ELAN Variables

**RMS_NPROCS:**

## Random Variables

**MPICH_DBG_OUTPUT:**

**MPICH_INTERFACE_HOSTNAME:**

**MPICH_NETMASK:**

**MPICH_PORT_RANGE:**

**MPITEST_VERBOSE:**

[Category:Stubs](Category:Stubs "wikilink")
[Category:Deprecated](Category:Deprecated "wikilink")