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ompi: temporarily disable dynamic add_procs on big-endian and 32-bit #1349

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ompi: temporarily disable dynamic add_procs on big-endian and 32-bit #1349

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18 changes: 15 additions & 3 deletions ompi/runtime/ompi_mpi_params.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2016 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2007-2015 Los Alamos National Security, LLC. All rights
* Copyright (c) 2007-2016 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
* Copyright (c) 2013-2014 Intel, Inc. All rights reserved
Expand Down Expand Up @@ -65,7 +65,13 @@ char *ompi_mpi_show_mca_params_string = NULL;
bool ompi_mpi_have_sparse_group_storage = !!(OMPI_GROUP_SPARSE);
bool ompi_mpi_preconnect_mpi = false;

/* NTH: temporarily disable add_procs on big-endian and 32-bit systems
* until we have a better solution for handling proc sentinels. */
#if SIZEOF_VOID_P == 4 || BYTE_ORDER == BIG_ENDIAN
#define OMPI_ADD_PROCS_CUTOFF_DEFAULT UINT_MAX
#else
#define OMPI_ADD_PROCS_CUTOFF_DEFAULT 0
#endif
uint32_t ompi_add_procs_cutoff = OMPI_ADD_PROCS_CUTOFF_DEFAULT;
bool ompi_mpi_dynamics_enabled = true;

Expand Down Expand Up @@ -270,8 +276,14 @@ int ompi_mpi_register_params(void)
"Maximum world size for pre-allocating resources for all "
"remote processes. Increasing this limit may improve "
"communication performance at the cost of memory usage",
MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL,
0, 0, OPAL_INFO_LVL_3, MCA_BASE_VAR_SCOPE_LOCAL,
MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0, OPAL_INFO_LVL_3,
/* NTH: temporarily disable add_procs on big-endian and 32-bit systems
* until we have a better solution for handling proc sentinels. */
#if SIZEOF_VOID_P == 4 || BYTE_ORDER == BIG_ENDIAN
MCA_BASE_VAR_SCOPE_CONSTANT,
#else
MCA_BASE_VAR_SCOPE_LOCAL,
#endif
&ompi_add_procs_cutoff);

ompi_mpi_dynamics_enabled = true;
Expand Down