149 строки
8.5 KiB
C
149 строки
8.5 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2006-2007 Voltaire All rights reserved.
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* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
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*
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "opal_config.h"
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#include <stdio.h>
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#include "opal/util/output.h"
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#include "opal/constants.h"
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#include "opal/mca/btl/btl.h"
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#include "opal/mca/btl/base/base.h"
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int mca_btl_base_param_register(mca_base_component_t *version,
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mca_btl_base_module_t *module)
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{
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char *msg;
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/* If this is ever triggered change the uint32_ts in mca_btl_base_module_t to unsigned ints */
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assert(sizeof(unsigned int) == sizeof(uint32_t));
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(void) mca_base_component_var_register(version, "exclusivity",
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"BTL exclusivity (must be >= 0)",
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MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0,
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OPAL_INFO_LVL_7,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_exclusivity);
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asprintf(&msg, "BTL bit flags (general flags: SEND=%d, PUT=%d, GET=%d, SEND_INPLACE=%d, RDMA_MATCHED=%d, HETEROGENEOUS_RDMA=%d; flags only used by the \"dr\" PML (ignored by others): ACK=%d, CHECKSUM=%d, RDMA_COMPLETION=%d; flags only used by the \"bfo\" PML (ignored by others): FAILOVER_SUPPORT=%d)",
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MCA_BTL_FLAGS_SEND,
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MCA_BTL_FLAGS_PUT,
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MCA_BTL_FLAGS_GET,
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MCA_BTL_FLAGS_SEND_INPLACE,
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MCA_BTL_FLAGS_RDMA_MATCHED,
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MCA_BTL_FLAGS_HETEROGENEOUS_RDMA,
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MCA_BTL_FLAGS_NEED_ACK,
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MCA_BTL_FLAGS_NEED_CSUM,
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MCA_BTL_FLAGS_RDMA_COMPLETION,
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MCA_BTL_FLAGS_FAILOVER_SUPPORT);
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(void) mca_base_component_var_register(version, "flags", msg,
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MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0,
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OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_flags);
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free(msg);
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(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)",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_4,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_rndv_eager_limit);
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(void) mca_base_component_var_register(version, "eager_limit", "Maximum size (in bytes, including header) of \"short\" messages (must be >= 1).",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_4,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_eager_limit);
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#if OPAL_CUDA_GDR_SUPPORT
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/* If no CUDA RDMA support, zero them out */
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if (!(MCA_BTL_FLAGS_CUDA_GET & module->btl_flags)) {
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module->btl_cuda_eager_limit = 0;
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module->btl_cuda_rdma_limit = SIZE_MAX;
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}
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(void) mca_base_component_var_register(version, "cuda_eager_limit", "Maximum size (in bytes, including header) of \"GPU short\" messages (must be >= 1).",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_cuda_eager_limit);
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(void) mca_base_component_var_register(version, "cuda_rdma_limit", "Size (in bytes, including header) of GPU buffer when switch to rndv protocol and pipeline.",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_cuda_rdma_limit);
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#endif /* OPAL_CUDA_GDR_SUPPORT */
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(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)",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_4,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_max_send_size);
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if (NULL != module->btl_put) {
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(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)",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_4,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_rdma_pipeline_send_length);
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(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)",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_4,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_rdma_pipeline_frag_size);
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(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)",
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MCA_BASE_VAR_TYPE_SIZE_T, NULL, 0, 0,
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OPAL_INFO_LVL_4,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_min_rdma_pipeline_size);
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(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)",
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MCA_BASE_VAR_TYPE_UNSIGNED_INT, NULL, 0, 0,
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OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_READONLY,
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&module->btl_latency);
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}
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return mca_btl_base_param_verify(module);
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}
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/* Verify btl parameters make sense */
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int mca_btl_base_param_verify(mca_btl_base_module_t *module)
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{
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if (module->btl_min_rdma_pipeline_size <
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(module->btl_eager_limit + module->btl_rdma_pipeline_send_length)) {
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module->btl_min_rdma_pipeline_size =
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module->btl_eager_limit + module->btl_rdma_pipeline_send_length;
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}
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if (NULL == module->btl_put) {
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module->btl_flags &= ~MCA_BTL_FLAGS_PUT;
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}
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if (NULL == module->btl_get) {
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module->btl_flags &= ~MCA_BTL_FLAGS_GET;
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}
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return OPAL_SUCCESS;
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}
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