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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2007 Voltaire All rights reserved.
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
* Copyright (c) 2016-2018 Los Alamos National Security, LLC. All rights
* reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdio.h>
#include "opal/constants.h"
#include "opal/mca/btl/base/base.h"
#include "opal/mca/btl/btl.h"
#include "opal/util/output.h"
int mca_btl_base_param_register(mca_base_component_t *version, mca_btl_base_module_t *module)
{
/* If this is ever triggered change the uint32_ts in mca_btl_base_module_t to unsigned ints */
assert(sizeof(unsigned int) == sizeof(uint32_t));
(void) mca_base_component_var_register(version, "exclusivity", "BTL exclusivity (must be >= 0)",
MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0,
OPAL_INFO_LVL_7, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_exclusivity);
(void) mca_base_component_var_register(
version, "flags",
"BTL bit flags (general flags: send, put, get, in-place, hetero-rdma, "
"atomics, fetching-atomics)",
MCA_BASE_VAR_TYPE_UNSIGNED_INT, &mca_btl_base_flag_enum->super, 0, 0, OPAL_INFO_LVL_5,
MCA_BASE_VAR_SCOPE_READONLY, &module->btl_flags);
(void) mca_base_component_var_register(version, "atomic_flags", "BTL atomic support flags",
MCA_BASE_VAR_TYPE_UNSIGNED_INT,
&mca_btl_base_atomic_enum->super, 0,
MCA_BASE_VAR_FLAG_DEFAULT_ONLY, OPAL_INFO_LVL_5,
MCA_BASE_VAR_SCOPE_CONSTANT, &module->btl_atomic_flags);
(void) mca_base_component_var_register(
version, "rndv_eager_limit",
"Size (in bytes, including header) of \"phase 1\" fragment sent for all large messages "
"(must be >= 0 and <= eager_limit)",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_rndv_eager_limit);
(void) mca_base_component_var_register(
version, "eager_limit",
"Maximum size (in bytes, including header) of \"short\" messages (must be >= 1).",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_eager_limit);
if ((module->btl_flags & MCA_BTL_FLAGS_GET) && module->btl_get) {
if (0 == module->btl_get_limit) {
module->btl_get_limit = SIZE_MAX;
}
(void) mca_base_component_var_register(version, "get_limit",
"Maximum size (in bytes) for btl get",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_get_limit);
/* Allow the user to set the alignment. The BTL should double-check the alignment in its
* open function. */
(void) mca_base_component_var_register(version, "get_alignment",
"Alignment required for btl get",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
OPAL_INFO_LVL_6, MCA_BASE_VAR_SCOPE_CONSTANT,
&module->btl_get_alignment);
}
if ((module->btl_flags & MCA_BTL_FLAGS_PUT) && module->btl_put) {
if (0 == module->btl_put_limit) {
module->btl_put_limit = SIZE_MAX;
}
(void) mca_base_component_var_register(version, "put_limit",
"Maximum size (in bytes) for btl put",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_put_limit);
/* Allow the user to set the alignment. The BTL should double-check the alignment in its
* open function. */
(void) mca_base_component_var_register(version, "put_alignment",
"Alignment required for btl put",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
OPAL_INFO_LVL_6, MCA_BASE_VAR_SCOPE_CONSTANT,
&module->btl_put_alignment);
}
#if OPAL_CUDA_GDR_SUPPORT
/* If no CUDA RDMA support, zero them out */
if (!(MCA_BTL_FLAGS_ACCELERATOR_GET & module->btl_flags)) {
module->btl_accelerator_eager_limit = 0;
module->btl_accelerator_rdma_limit = SIZE_MAX;
}
(void) mca_base_component_var_register(
version, "accelerator_eager_limit",
"Maximum size (in bytes, including header) of \"GPU short\" messages (must be >= 1).",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_5, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_accelerator_eager_limit);
(void) mca_base_component_var_register(version, "accelerator_rdma_limit",
"Size (in bytes, including header) of GPU buffer when "
"switch to rndv protocol and pipeline.",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_5,
MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_accelerator_rdma_limit);
#endif /* OPAL_CUDA_GDR_SUPPORT */
module->btl_accelerator_max_send_size = 0;
(void) mca_base_component_var_register(
version, "accelerator_max_send_size",
"Maximum size (in bytes) of a single GPU \"phase 2\" fragment of a long message when using "
"the pipeline protocol (must be >= 1) (only valid on smcuda btl)",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_accelerator_max_send_size);
(void) mca_base_component_var_register(
version, "max_send_size",
"Maximum size (in bytes) of a single \"phase 2\" fragment of a long message when using the "
"pipeline protocol (must be >= 1)",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_max_send_size);
if (NULL != module->btl_put) {
(void) mca_base_component_var_register(
version, "rdma_pipeline_send_length",
"Length of the \"phase 2\" portion of a large message (in bytes) when using the "
"pipeline protocol. This part of the message will be split into fragments of size "
"max_send_size and sent using send/receive semantics (must be >= 0; only relevant when "
"the PUT flag is set)",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_rdma_pipeline_send_length);
(void) mca_base_component_var_register(
version, "rdma_pipeline_frag_size",
"Maximum size (in bytes) of a single \"phase 3\" fragment from a long message when "
"using the pipeline protocol. These fragments will be sent using RDMA semantics (must "
"be >= 1; only relevant when the PUT flag is set)",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_rdma_pipeline_frag_size);
(void) mca_base_component_var_register(
version, "min_rdma_pipeline_size",
"Messages smaller than this size (in bytes) will not use the RDMA pipeline protocol. "
"Instead, they will be split into fragments of max_send_size and sent using "
"send/receive semantics (must be >=0, and is automatically adjusted up to at least "
"(eager_limit+btl_rdma_pipeline_send_length); only relevant when the PUT flag is set)",
MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0, OPAL_INFO_LVL_4, MCA_BASE_VAR_SCOPE_READONLY,
&module->btl_min_rdma_pipeline_size);
(void) mca_base_component_var_register(
version, "latency",
"Approximate latency of interconnect (0 = auto-detect value at run-time [not supported "
"in all BTL modules], >= 1 = latency in microseconds)",
MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0, OPAL_INFO_LVL_5,
MCA_BASE_VAR_SCOPE_READONLY, &module->btl_latency);
(void) mca_base_component_var_register(
version, "bandwidth",
"Approximate maximum bandwidth of interconnect (0 = auto-detect value at run-time [not "
"supported in all BTL modules], >= 1 = bandwidth in Mbps)",
MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0, OPAL_INFO_LVL_5,
MCA_BASE_VAR_SCOPE_READONLY, &module->btl_bandwidth);
}
return mca_btl_base_param_verify(module);
}
/* Verify btl parameters make sense */
int mca_btl_base_param_verify(mca_btl_base_module_t *module)
{
if (module->btl_min_rdma_pipeline_size
< (module->btl_eager_limit + module->btl_rdma_pipeline_send_length)) {
module->btl_min_rdma_pipeline_size = module->btl_eager_limit
+ module->btl_rdma_pipeline_send_length;
}
if (NULL == module->btl_put) {
module->btl_flags &= ~MCA_BTL_FLAGS_PUT;
}
if (NULL == module->btl_get) {
module->btl_flags &= ~MCA_BTL_FLAGS_GET;
}
if (NULL == module->btl_flush) {
module->btl_flags &= ~MCA_BTL_FLAGS_RDMA_FLUSH;
}
if (0 == module->btl_atomic_flags) {
module->btl_flags &= ~MCA_BTL_FLAGS_ATOMIC_OPS;
}
if (0 == module->btl_get_limit) {
module->btl_get_limit = SIZE_MAX;
}
if (0 == module->btl_put_limit) {
module->btl_put_limit = SIZE_MAX;
}
return OPAL_SUCCESS;
}
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