9d92075e60
This commit rewrites much of the btl/self component to fix a long standing memory usage bug. Before this commit the prepare_src path would always allocate a max send fragment (256kB). This caused the rank to allocate 32 * 256k useless buffers from one send. This commit makes the following changes: - Add the MCA_BTL_FLAGS_GET flag by default. No reason not to set it. - Reduce the eager limit, max send size, buffers per allocation, and maximum buffer count per fragment size. These changes should have no noticible affect on performance but should greatly reduce the memory usage of the component. - Implement the sendi function. This should reduce self send latency somewhat. - Rewrite prepare_src to never allocate a eager or max send fragment for contiguous data. - add_procs needs to return something in the peer array for the proc self not just set the reachability bit. Now stores (void *) 1. - Various cleanups. Removed and unused file. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
194 строки
8.1 KiB
C
194 строки
8.1 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
|
|
/*
|
|
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2006 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) 2010 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2014-2016 Los Alamos National Security, LLC. All rights
|
|
* reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
#include "opal_config.h"
|
|
|
|
#include "btl_self.h"
|
|
#include "btl_self_frag.h"
|
|
|
|
static int mca_btl_self_component_register(void);
|
|
static int mca_btl_self_component_open(void);
|
|
static int mca_btl_self_component_close(void);
|
|
|
|
/**
|
|
* SELF module initialization.
|
|
*
|
|
* @param num_btls (OUT) Number of BTLs returned in BTL array.
|
|
* @param enable_progress_threads (IN) Flag indicating whether BTL is allowed to have progress threads
|
|
* @param enable_mpi_threads (IN) Flag indicating whether BTL must support multilple simultaneous invocations from different threads
|
|
*
|
|
*/
|
|
static mca_btl_base_module_t **mca_btl_self_component_init (int *num_btls,
|
|
bool enable_progress_threads,
|
|
bool enable_mpi_threads);
|
|
|
|
/*
|
|
* Shared Memory (SELF) component instance.
|
|
*/
|
|
|
|
mca_btl_self_component_t mca_btl_self_component = {
|
|
.super = {
|
|
/* First, the mca_base_component_t struct containing meta information
|
|
about the component itself */
|
|
.btl_version = {
|
|
MCA_BTL_DEFAULT_VERSION("self"),
|
|
.mca_open_component = mca_btl_self_component_open,
|
|
.mca_close_component = mca_btl_self_component_close,
|
|
.mca_register_component_params = mca_btl_self_component_register,
|
|
},
|
|
.btl_data = {
|
|
/* The component is checkpoint ready */
|
|
.param_field = MCA_BASE_METADATA_PARAM_CHECKPOINT,
|
|
},
|
|
|
|
.btl_init = mca_btl_self_component_init,
|
|
} /* end super */
|
|
};
|
|
|
|
/*
|
|
* Called by MCA framework to open the component, registers
|
|
* component parameters.
|
|
*/
|
|
|
|
static int mca_btl_self_component_register(void)
|
|
{
|
|
mca_base_var_group_component_register(&mca_btl_self_component.super.btl_version,
|
|
"BTL for self communication");
|
|
|
|
/* register SELF component parameters */
|
|
mca_btl_self_component.free_list_num = 0;
|
|
(void) mca_base_component_var_register(&mca_btl_self_component.super.btl_version, "free_list_num",
|
|
"Number of fragments by default",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
|
|
OPAL_INFO_LVL_9,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&mca_btl_self_component.free_list_num);
|
|
/* NTH: free list buffers are not released until we tear down so DO NOT make them unlimited here */
|
|
mca_btl_self_component.free_list_max = 64;
|
|
(void) mca_base_component_var_register(&mca_btl_self_component.super.btl_version, "free_list_max",
|
|
"Maximum number of fragments",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
|
|
OPAL_INFO_LVL_9,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&mca_btl_self_component.free_list_max);
|
|
mca_btl_self_component.free_list_inc = 8;
|
|
(void) mca_base_component_var_register(&mca_btl_self_component.super.btl_version, "free_list_inc",
|
|
"Increment by this number of fragments",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
|
|
OPAL_INFO_LVL_9,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&mca_btl_self_component.free_list_inc);
|
|
|
|
mca_btl_self.btl_exclusivity = MCA_BTL_EXCLUSIVITY_HIGH;
|
|
mca_btl_self.btl_eager_limit = 1024;
|
|
mca_btl_self.btl_rndv_eager_limit = 128 * 1024;
|
|
mca_btl_self.btl_max_send_size = 16 * 1024;
|
|
mca_btl_self.btl_rdma_pipeline_send_length = INT_MAX;
|
|
mca_btl_self.btl_rdma_pipeline_frag_size = INT_MAX;
|
|
mca_btl_self.btl_min_rdma_pipeline_size = 0;
|
|
mca_btl_self.btl_flags = MCA_BTL_FLAGS_RDMA | MCA_BTL_FLAGS_SEND_INPLACE | MCA_BTL_FLAGS_SEND;
|
|
mca_btl_self.btl_bandwidth = 100;
|
|
mca_btl_self.btl_latency = 0;
|
|
mca_btl_base_param_register (&mca_btl_self_component.super.btl_version, &mca_btl_self);
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
static int mca_btl_self_component_open(void)
|
|
{
|
|
/* initialize objects */
|
|
OBJ_CONSTRUCT(&mca_btl_self_component.self_frags_eager, opal_free_list_t);
|
|
OBJ_CONSTRUCT(&mca_btl_self_component.self_frags_send, opal_free_list_t);
|
|
OBJ_CONSTRUCT(&mca_btl_self_component.self_frags_rdma, opal_free_list_t);
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
|
|
/*
|
|
* component cleanup - sanity checking of queue lengths
|
|
*/
|
|
|
|
static int mca_btl_self_component_close(void)
|
|
{
|
|
OBJ_DESTRUCT(&mca_btl_self_component.self_frags_eager);
|
|
OBJ_DESTRUCT(&mca_btl_self_component.self_frags_send);
|
|
OBJ_DESTRUCT(&mca_btl_self_component.self_frags_rdma);
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* SELF component initialization
|
|
*/
|
|
static mca_btl_base_module_t **mca_btl_self_component_init (int *num_btls,
|
|
bool enable_progress_threads,
|
|
bool enable_mpi_threads)
|
|
{
|
|
mca_btl_base_module_t **btls = NULL;
|
|
int ret;
|
|
|
|
/* initialize free lists */
|
|
ret = opal_free_list_init (&mca_btl_self_component.self_frags_eager,
|
|
sizeof (mca_btl_self_frag_eager_t) + mca_btl_self.btl_eager_limit,
|
|
opal_cache_line_size, OBJ_CLASS(mca_btl_self_frag_eager_t), 0,
|
|
opal_cache_line_size, mca_btl_self_component.free_list_num,
|
|
mca_btl_self_component.free_list_max,
|
|
mca_btl_self_component.free_list_inc,
|
|
NULL, 0, NULL, NULL, NULL);
|
|
if (OPAL_SUCCESS != ret) {
|
|
return NULL;
|
|
}
|
|
|
|
ret = opal_free_list_init (&mca_btl_self_component.self_frags_send,
|
|
sizeof (mca_btl_self_frag_send_t) + mca_btl_self.btl_max_send_size,
|
|
opal_cache_line_size, OBJ_CLASS(mca_btl_self_frag_send_t), 0,
|
|
opal_cache_line_size, mca_btl_self_component.free_list_num,
|
|
mca_btl_self_component.free_list_max,
|
|
mca_btl_self_component.free_list_inc,
|
|
NULL, 0, NULL, NULL, NULL);
|
|
if (OPAL_SUCCESS != ret) {
|
|
return NULL;
|
|
}
|
|
|
|
ret = opal_free_list_init (&mca_btl_self_component.self_frags_rdma,
|
|
sizeof (mca_btl_self_frag_rdma_t) + MCA_BTL_SELF_MAX_INLINE_SIZE,
|
|
opal_cache_line_size, OBJ_CLASS(mca_btl_self_frag_rdma_t), 0,
|
|
opal_cache_line_size, mca_btl_self_component.free_list_num,
|
|
mca_btl_self_component.free_list_max,
|
|
mca_btl_self_component.free_list_inc,
|
|
NULL, 0, NULL, NULL, NULL);
|
|
if (OPAL_SUCCESS != ret) {
|
|
return NULL;
|
|
}
|
|
|
|
/* get pointer to the btls */
|
|
btls = (mca_btl_base_module_t **) malloc (sizeof (mca_btl_base_module_t *));
|
|
if (NULL == btls) {
|
|
return NULL;
|
|
}
|
|
|
|
btls[0] = &mca_btl_self;
|
|
*num_btls = 1;
|
|
|
|
return btls;
|
|
}
|
|
|