814 строки
28 KiB
C
814 строки
28 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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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* $COPYRIGHT$
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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 "ompi_config.h"
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "opal/threads/mutex.h"
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#include "datatype/convertor.h"
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#include "include/sys/atomic.h"
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#include "opal/util/output.h"
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#include "opal/util/if.h"
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#include "util/proc_info.h"
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#include "opal/util/printf.h"
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#include "util/sys_info.h"
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#include "class/ompi_fifo.h"
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#include "class/ompi_free_list.h"
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#include "mca/pml/pml.h"
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#include "mca/btl/btl.h"
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#include "mca/mpool/base/base.h"
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#include "mca/common/sm/common_sm_mmap.h"
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#include "btl_sm.h"
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#include "btl_sm_endpoint.h"
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#include "btl_sm_frag.h"
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#include "btl_sm_fifo.h"
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mca_btl_sm_t mca_btl_sm[2] = {
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{
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{
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&mca_btl_sm_component.super,
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0, /* btl_eager_limit */
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0, /* btl_min_send_size */
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0, /* btl_max_send_size */
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0, /* btl_min_rdma_size */
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0, /* btl_max_rdma_size */
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0, /* btl_exclusivity */
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0, /* btl_latency */
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0, /* btl_bandwidth */
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0, /* btl flags */
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mca_btl_sm_add_procs_same_base_addr,
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mca_btl_sm_del_procs,
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mca_btl_sm_register,
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mca_btl_sm_finalize,
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mca_btl_sm_alloc,
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mca_btl_sm_free,
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mca_btl_sm_prepare_src,
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NULL,
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mca_btl_sm_send,
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NULL, /* put */
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NULL /* get */
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}
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},
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{
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{
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&mca_btl_sm_component.super,
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0, /* btl_eager_limit */
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0, /* btl_min_send_size */
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0, /* btl_max_send_size */
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0, /* btl_min_rdma_size */
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0, /* btl_max_rdma_size */
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0, /* btl_exclusivity */
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0, /* btl_latency */
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0, /* btl_bandwidth */
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0, /* btl flags */
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mca_btl_sm_add_procs,
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mca_btl_sm_del_procs,
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mca_btl_sm_register,
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mca_btl_sm_finalize,
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mca_btl_sm_alloc,
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mca_btl_sm_free,
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mca_btl_sm_prepare_src,
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NULL,
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mca_btl_sm_send,
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NULL, /* get function */
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NULL /* put function */
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}
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}
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};
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/* track information needed to synchronise a Shared Memory BTL module */
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mca_btl_sm_module_resource_t mca_btl_sm_module_resource;
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int mca_btl_sm_add_procs_same_base_addr(
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struct mca_btl_base_module_t* btl,
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size_t nprocs,
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struct ompi_proc_t **procs,
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struct mca_btl_base_endpoint_t **peers,
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ompi_bitmap_t* reachability)
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{
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int return_code=OMPI_SUCCESS;
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size_t i,j,proc,size,n_to_allocate,length;
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int n_local_procs,cnt,len;
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ompi_proc_t* my_proc; /* pointer to caller's proc structure */
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mca_btl_sm_t *btl_sm;
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ompi_fifo_t *my_fifos;
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ompi_fifo_t * volatile *fifo_tmp;
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bool same_sm_base;
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ssize_t diff;
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volatile char **tmp_ptr;
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/* initializion */
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for(i=0 ; i < nprocs ; i++ ) {
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peers[i]=NULL;
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}
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btl_sm=(mca_btl_sm_t *)btl;
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/* allocate array to hold setup shared memory from all
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* other procs */
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mca_btl_sm_component.sm_proc_connect=(int *) malloc(nprocs*sizeof(int));
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if( NULL == mca_btl_sm_component.sm_proc_connect ){
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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/* initialize and sm_proc_connect*/
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for(proc=0 ; proc < nprocs ; proc++ ) {
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mca_btl_sm_component.sm_proc_connect[proc]=0;
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}
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/* get pointer to my proc structure */
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my_proc=ompi_proc_local();
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if( NULL == my_proc ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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/* Get unique host identifier for each process in the list,
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* and idetify procs that are on this host. Add procs on this
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* host to shared memory reachbility list. Also, get number
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* of local procs in the prcs list. */
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n_local_procs=0;
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for( proc=0 ; proc < nprocs; proc++ ) {
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#if OMPI_ENABLE_PROGRESS_THREADS == 1
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char path[PATH_MAX];
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#endif
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struct mca_btl_base_endpoint_t *peer;
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/* check to see if this is me */
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if( my_proc == procs[proc] ) {
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mca_btl_sm_component.my_smp_rank = n_local_procs;
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}
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/* check to see if this proc can be reached via shmem (i.e.,
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if they're on my local host and in my job) */
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else if (procs[proc]->proc_name.jobid != my_proc->proc_name.jobid ||
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0 == (procs[proc]->proc_flags & OMPI_PROC_FLAG_LOCAL)) {
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continue;
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}
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/* If we got here, the proc is reachable via sm. So
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initialize the peers information */
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peer = peers[proc] = malloc(sizeof(struct mca_btl_base_endpoint_t));
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if( NULL == peer ){
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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peer->peer_smp_rank=n_local_procs+
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mca_btl_sm_component.num_smp_procs;
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#if OMPI_ENABLE_PROGRESS_THREADS == 1
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sprintf(path, "%s/sm_fifo.%d", orte_process_info.job_session_dir,
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procs[proc]->proc_name.vpid);
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peer->fifo_fd = open(path, O_WRONLY);
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if(peer->fifo_fd < 0) {
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opal_output(0, "mca_btl_sm_add_procs: open(%s) failed with errno=%d\n", path, errno);
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goto CLEANUP;
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}
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#endif
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n_local_procs++;
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mca_btl_sm_component.sm_proc_connect[proc]=SM_CONNECTED;
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}
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if( n_local_procs == 0) {
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return_code = OMPI_SUCCESS;
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goto CLEANUP;
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}
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/* lookup shared memory pool */
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if(NULL == mca_btl_sm_component.sm_mpool) {
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mca_btl_sm_component.sm_mpool =
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mca_mpool_base_module_lookup(mca_btl_sm_component.sm_mpool_name);
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if (NULL == mca_btl_sm_component.sm_mpool) {
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mca_btl_sm_component.sm_mpool =
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mca_mpool_base_module_create(mca_btl_sm_component.sm_mpool_name,btl,NULL);
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}
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/* Sanity check to ensure that we found it */
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if (NULL == mca_btl_sm_component.sm_mpool) {
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return_code = OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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mca_btl_sm_component.sm_mpool_base =
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mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool_base);
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}
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/* make sure that my_smp_rank has been defined */
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if( 0xFFFFFFFF == mca_btl_sm_component.my_smp_rank ) {
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return_code=OMPI_ERROR;
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goto CLEANUP;
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}
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/* see if need to allocate space for extra procs */
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if( 0 > mca_btl_sm_component.sm_max_procs ) {
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/* no limit */
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if( 0 <= mca_btl_sm_component.sm_extra_procs ) {
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/* limit */
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mca_btl_sm_component.sm_max_procs=n_local_procs+
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mca_btl_sm_component.sm_extra_procs;
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} else {
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/* no limit */
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mca_btl_sm_component.sm_max_procs=2*n_local_procs;
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}
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}
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n_to_allocate=mca_btl_sm_component.sm_max_procs;
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/* make sure n_to_allocate is greater than 0 */
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if ( !mca_btl_sm[0].btl_inited ) {
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/* set the shared memory offset */
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mca_btl_sm_component.sm_offset=(ssize_t *)
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malloc(n_to_allocate*sizeof(ssize_t));
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if(NULL == mca_btl_sm_component.sm_offset ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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/* create a list of peers */
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mca_btl_sm_component.sm_peers=(struct mca_btl_base_endpoint_t**)
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malloc(n_to_allocate*sizeof(struct mca_btl_base_endpoint_t*));
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if(NULL == mca_btl_sm_component.sm_peers ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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}
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/* set local proc's smp rank in the peers structure for
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* rapid access */
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for( proc=0 ; proc < nprocs; proc++ ) {
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struct mca_btl_base_endpoint_t* peer = peers[proc];
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if(NULL != peer) {
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mca_btl_sm_component.sm_peers[peer->peer_smp_rank] = peer;
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peer->my_smp_rank=mca_btl_sm_component.my_smp_rank;
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}
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}
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/* Allocate Shared Memory BTL process coordination
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* data structure. This will reside in shared memory */
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/*
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* Create backing file - only first time through
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*/
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if ( !mca_btl_sm[0].btl_inited ) {
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/* set file name */
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len=asprintf(&(mca_btl_sm_component.sm_resouce_ctl_file),
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"%s/shared_mem_btl_module.%s",orte_process_info.job_session_dir,
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orte_system_info.nodename);
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if( 0 > len ) {
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goto CLEANUP;
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}
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/* Pass in a data segment alignment of 0 to get no data
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segment (only the shared control structure */
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size = sizeof(mca_btl_sm_module_resource_t);
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if(NULL==(mca_btl_sm_component.mmap_file=mca_common_sm_mmap_init(size,
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mca_btl_sm_component.sm_resouce_ctl_file,
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sizeof(mca_btl_sm_module_resource_t), 0)))
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{
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opal_output(0, "mca_btl_sm_add_procs: unable to create shared memory BTL coordinating strucure :: size %ld \n",
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size);
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return_code=OMPI_ERROR;
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goto CLEANUP;
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}
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/* set the pointer to the shared memory control structure */
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mca_btl_sm_component.sm_ctl_header=(mca_btl_sm_module_resource_t *)
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mca_btl_sm_component.mmap_file->map_seg;
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/* Allocate a fixed size pointer array for the 2-D Shared memory queues.
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* Excess slots will be allocated for future growth. One could
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* make this array growable, but then one would need to uses mutexes
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* for any access to these queues to ensure data consistancy when
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* the array is grown */
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if(0 == mca_btl_sm_component.my_smp_rank ) {
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/* allocate ompi_fifo_t strucutes for each fifo of the queue
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* pairs - one per pair of local processes */
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/* check to make sure number of local procs is within the
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* specified limits */
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if( ( 0 < mca_btl_sm_component.sm_max_procs ) &&
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( n_local_procs > mca_btl_sm_component.sm_max_procs) ) {
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return_code=OMPI_ERROR;
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goto CLEANUP;
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}
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/* allocate array of ompi_fifo_t* elements -
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* offset relative to base segement is stored, so that
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* this can be used by other procs */
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mca_btl_sm_component.sm_ctl_header->fifo=
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mca_btl_sm_component.sm_mpool->mpool_alloc
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(mca_btl_sm_component.sm_mpool, n_to_allocate*sizeof(ompi_fifo_t *),
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CACHE_LINE_SIZE, NULL);
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if ( NULL == mca_btl_sm_component.sm_ctl_header->fifo ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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/* initiazlize the pointer array */
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for(i=0 ; i < n_to_allocate ; i++ ) {
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mca_btl_sm_component.sm_ctl_header->fifo[i]=NULL;
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}
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/* allocate and initialize the array to hold the virtual address
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* of the shared memory base */
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mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_segment = ( volatile char **)
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mca_btl_sm_component.sm_mpool->mpool_alloc
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(mca_btl_sm_component.sm_mpool, n_to_allocate*sizeof(char *), CACHE_LINE_SIZE, NULL);
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if ( NULL == mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_segment ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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/* initialize the pointer array */
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for(i=0 ; i < n_to_allocate ; i++ ) {
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mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_segment[i]=NULL;
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}
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/* allocate and initialize the array of flags indicating
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* when the virtual address of the shared memory address
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* has been set */
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mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_flags = ( int *)
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mca_btl_sm_component.sm_mpool->mpool_alloc
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(mca_btl_sm_component.sm_mpool, n_to_allocate*sizeof(int), CACHE_LINE_SIZE, NULL);
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if ( NULL == mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_flags ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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for(i=0 ; i < n_to_allocate ; i++ ) {
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mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_flags[i]=0;
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}
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/* set the addresses to be a relative, so that
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* they can be used by other procs */
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mca_btl_sm_component.sm_ctl_header->fifo=
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(volatile ompi_fifo_t **)
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( (char *)(mca_btl_sm_component.sm_ctl_header->fifo)-
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(char *)(mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool)) );
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mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_segment=( volatile char **)
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( (char *)(mca_btl_sm_component.sm_ctl_header->
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segment_header.base_shared_mem_segment) -
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(char *)(mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool)) );
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/* allow other procs to use this shared memory map */
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mca_btl_sm_component.mmap_file->map_seg->seg_inited=true;
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/* memory barrier to ensure this flag is set before other
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* flags are set */
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opal_atomic_mb();
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}
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/* Note: Need to make sure that proc 0 initializes control
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* structures before any of the other procs can progress */
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if( 0 != mca_btl_sm_component.my_smp_rank )
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{
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/* spin unitl local proc 0 initializes the segment */
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while(!mca_btl_sm_component.mmap_file->map_seg->seg_inited)
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{ ; }
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}
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/* set the base of the shared memory segment, and flag
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* indicating that it is set */
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tmp_ptr=(volatile char **)
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( (char *)(mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_segment) +
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(long )(mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool)) );
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tmp_ptr[mca_btl_sm_component.my_smp_rank]=
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mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool);
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/* memory barrier to ensure this flag is set before other
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* flags are set */
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opal_atomic_mb();
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mca_btl_sm_component.sm_ctl_header->segment_header.
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base_shared_mem_flags[mca_btl_sm_component.my_smp_rank]=1;
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/*
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* initialize the array of fifo's "owned" by this process
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* The virtual addresses are valid only in the sender's
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* address space - unless the base of the shared memory
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* segment is mapped at the same location in the reader's
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* virtual address space.
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*/
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my_fifos=( ompi_fifo_t *)
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mca_btl_sm_component.sm_mpool->mpool_alloc
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(mca_btl_sm_component.sm_mpool, n_to_allocate*sizeof(ompi_fifo_t), CACHE_LINE_SIZE, NULL);
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if ( NULL == my_fifos ) {
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return_code=OMPI_ERR_OUT_OF_RESOURCE;
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goto CLEANUP;
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}
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for( j=0 ; j < n_to_allocate ; j++ ) {
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my_fifos[j].head=OMPI_CB_FREE;
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my_fifos[j].tail=OMPI_CB_FREE;
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opal_atomic_unlock(&(my_fifos[j].head_lock));
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opal_atomic_unlock(&(my_fifos[j].tail_lock));
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}
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fifo_tmp=(ompi_fifo_t * volatile *)
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( (char *)(mca_btl_sm_component.sm_ctl_header->fifo) +
|
|
(long)(mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool)) );
|
|
/* RLG : need memory barrier */
|
|
fifo_tmp[mca_btl_sm_component.my_smp_rank]=my_fifos;
|
|
|
|
/* cache the pointer to the 2d fifo array. These addresses
|
|
* are valid in the current process space */
|
|
mca_btl_sm_component.fifo=(ompi_fifo_t **)
|
|
malloc(sizeof(ompi_fifo_t *)*n_to_allocate);
|
|
if( NULL == mca_btl_sm_component.fifo ) {
|
|
return_code=OMPI_ERROR;
|
|
goto CLEANUP;
|
|
}
|
|
mca_btl_sm_component.fifo[mca_btl_sm_component.my_smp_rank]=my_fifos;
|
|
}
|
|
|
|
/* cache the pointers to the rest of the fifo arrays */
|
|
fifo_tmp=(ompi_fifo_t * volatile *)
|
|
( (char *)(mca_btl_sm_component.sm_ctl_header->fifo) +
|
|
(long)(mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool)) );
|
|
for( j=mca_btl_sm_component.num_smp_procs ; j <
|
|
mca_btl_sm_component.num_smp_procs+n_local_procs ; j++ ) {
|
|
|
|
/* spin until this element is allocated */
|
|
while ( NULL == fifo_tmp[j] )
|
|
{ ; }
|
|
|
|
tmp_ptr=(volatile char **)
|
|
( (char *)mca_btl_sm_component.sm_ctl_header->
|
|
segment_header.base_shared_mem_segment +
|
|
(long)mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool));
|
|
diff= tmp_ptr[mca_btl_sm_component.my_smp_rank]-tmp_ptr[j];
|
|
mca_btl_sm_component.fifo[j]=
|
|
( ompi_fifo_t *)( (char *)fifo_tmp[j]+diff);
|
|
mca_btl_sm_component.sm_offset[j]=tmp_ptr[j]-
|
|
tmp_ptr[mca_btl_sm_component.my_smp_rank];
|
|
|
|
}
|
|
|
|
/* initialize some of the free-lists */
|
|
if( !mca_btl_sm[0].btl_inited ) {
|
|
/* some initialization happens only the first time this routine
|
|
* is called, i.e. when btl_inited is false */
|
|
|
|
/* initialize fragment descriptor free lists */
|
|
|
|
/* allocation will be for the fragment descriptor and payload buffer */
|
|
length=sizeof(mca_btl_sm_frag_t) + mca_btl_sm_component.eager_limit;
|
|
ompi_free_list_init(&mca_btl_sm_component.sm_frags1, length,
|
|
OBJ_CLASS(mca_btl_sm_frag1_t),
|
|
mca_btl_sm_component.sm_free_list_num,
|
|
mca_btl_sm_component.sm_free_list_max,
|
|
mca_btl_sm_component.sm_free_list_inc,
|
|
mca_btl_sm_component.sm_mpool); /* use shared-memory pool */
|
|
|
|
length=sizeof(mca_btl_sm_frag_t) + mca_btl_sm_component.max_frag_size;
|
|
ompi_free_list_init(&mca_btl_sm_component.sm_frags2, length,
|
|
OBJ_CLASS(mca_btl_sm_frag2_t),
|
|
mca_btl_sm_component.sm_free_list_num,
|
|
mca_btl_sm_component.sm_free_list_max,
|
|
mca_btl_sm_component.sm_free_list_inc,
|
|
mca_btl_sm_component.sm_mpool); /* use shared-memory pool */
|
|
|
|
/* set up mca_btl_sm_component.list_smp_procs_same_base_addr */
|
|
mca_btl_sm_component.list_smp_procs_same_base_addr=(int *)
|
|
malloc(mca_btl_sm_component.sm_max_procs*sizeof(int));
|
|
if( NULL == mca_btl_sm_component.list_smp_procs_same_base_addr ){
|
|
return_code=OMPI_ERR_OUT_OF_RESOURCE;
|
|
goto CLEANUP;
|
|
}
|
|
|
|
/* set up mca_btl_sm_component.list_smp_procs_different_base_addr */
|
|
mca_btl_sm_component.list_smp_procs_different_base_addr=(int *)
|
|
malloc(mca_btl_sm_component.sm_max_procs*sizeof(int));
|
|
if( NULL == mca_btl_sm_component.list_smp_procs_different_base_addr ){
|
|
return_code=OMPI_ERR_OUT_OF_RESOURCE;
|
|
goto CLEANUP;
|
|
}
|
|
|
|
/* set flag indicating btl has been inited */
|
|
btl_sm->btl_inited=true;
|
|
}
|
|
|
|
/* set connectivity */
|
|
cnt=0;
|
|
for(proc = 0 ; proc < nprocs ; proc++ ) {
|
|
|
|
struct mca_btl_base_endpoint_t* peer = peers[proc];
|
|
if(peer == NULL)
|
|
continue;
|
|
|
|
tmp_ptr=(volatile char **)
|
|
( (char *)mca_btl_sm_component.sm_ctl_header->
|
|
segment_header.base_shared_mem_segment +
|
|
(long)mca_btl_sm_component.sm_mpool->mpool_base(mca_btl_sm_component.sm_mpool));
|
|
same_sm_base=(tmp_ptr[peer->peer_smp_rank] ==
|
|
tmp_ptr[mca_btl_sm_component.my_smp_rank]);
|
|
|
|
if( SM_CONNECTED == mca_btl_sm_component.sm_proc_connect[proc] ) {
|
|
if( same_sm_base ){
|
|
|
|
/* don't count if same process */
|
|
if( (mca_btl_sm_component.num_smp_procs+cnt ) ==
|
|
mca_btl_sm_component.my_smp_rank) {
|
|
cnt++;
|
|
continue;
|
|
}
|
|
/* set up the list of local processes with the same base
|
|
* shared memory virtual address as this process */
|
|
mca_btl_sm_component.list_smp_procs_same_base_addr
|
|
[mca_btl_sm_component.num_smp_procs_same_base_addr]=
|
|
cnt;
|
|
mca_btl_sm_component.num_smp_procs_same_base_addr++;
|
|
cnt++;
|
|
/* add this proc to shared memory accessability list */
|
|
return_code=ompi_bitmap_set_bit(reachability,proc);
|
|
if( OMPI_SUCCESS != return_code ){
|
|
goto CLEANUP;
|
|
}
|
|
} else {
|
|
/* set up the list of local processes with the same base
|
|
* shared memory virtual address as this process */
|
|
mca_btl_sm_component.list_smp_procs_different_base_addr
|
|
[mca_btl_sm_component.num_smp_procs_different_base_addr]=
|
|
cnt;
|
|
mca_btl_sm_component.num_smp_procs_different_base_addr++;
|
|
cnt++;
|
|
mca_btl_sm_component.sm_proc_connect[proc]=
|
|
SM_CONNECTED_DIFFERENT_BASE_ADDR;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* update the local smp process count */
|
|
mca_btl_sm_component.num_smp_procs+=n_local_procs;
|
|
|
|
CLEANUP:
|
|
return return_code;
|
|
}
|
|
|
|
/* Note:: this routine assumes that mca_btl_sm_add_procs_same_base_addr
|
|
* has already been called to set up data structures needed by this
|
|
* routine */
|
|
int mca_btl_sm_add_procs(
|
|
struct mca_btl_base_module_t* btl,
|
|
size_t nprocs,
|
|
struct ompi_proc_t **procs,
|
|
struct mca_btl_base_endpoint_t **peers,
|
|
ompi_bitmap_t* reachability)
|
|
{
|
|
int return_code = OMPI_SUCCESS, tmp_cnt;
|
|
uint32_t proc, n_local_procs;
|
|
|
|
/* initializion */
|
|
for(proc=0 ; proc < nprocs ; proc++ ) {
|
|
peers[proc]=NULL;
|
|
}
|
|
|
|
/* figure out total number of local procs in current set */
|
|
tmp_cnt=0;
|
|
for(proc = 0 ; proc < nprocs ; proc++ ) {
|
|
if( (SM_CONNECTED_DIFFERENT_BASE_ADDR ==
|
|
mca_btl_sm_component.sm_proc_connect[proc]) ||
|
|
(SM_CONNECTED ==
|
|
mca_btl_sm_component.sm_proc_connect[proc]) ) {
|
|
tmp_cnt++;
|
|
}
|
|
}
|
|
/* set connectivity */
|
|
n_local_procs=0;
|
|
for(proc = 0 ; proc < nprocs ; proc++ ) {
|
|
if( (SM_CONNECTED_DIFFERENT_BASE_ADDR ==
|
|
mca_btl_sm_component.sm_proc_connect[proc]) ||
|
|
(SM_CONNECTED ==
|
|
mca_btl_sm_component.sm_proc_connect[proc]) ) {
|
|
n_local_procs++;
|
|
}
|
|
|
|
if( (SM_CONNECTED_DIFFERENT_BASE_ADDR ==
|
|
mca_btl_sm_component.sm_proc_connect[proc]) ) {
|
|
|
|
/* add this proc to shared memory accessability list */
|
|
return_code=ompi_bitmap_set_bit(reachability,proc);
|
|
if( OMPI_SUCCESS != return_code ){
|
|
goto CLEANUP;
|
|
}
|
|
|
|
/* initialize the peers information */
|
|
peers[proc]=malloc(sizeof(struct mca_btl_base_endpoint_t));
|
|
if( NULL == peers[proc] ){
|
|
return_code=OMPI_ERR_OUT_OF_RESOURCE;
|
|
goto CLEANUP;
|
|
}
|
|
peers[proc]->my_smp_rank=mca_btl_sm_component.my_smp_rank;
|
|
/* subtract tmp_cnt, since mca_btl_sm_add_procs_same_base_addr
|
|
* already added these into num_smp_procs */
|
|
peers[proc]->peer_smp_rank=n_local_procs+
|
|
mca_btl_sm_component.num_smp_procs-tmp_cnt;
|
|
n_local_procs++;
|
|
}
|
|
}
|
|
|
|
CLEANUP:
|
|
/* free local memory */
|
|
if(mca_btl_sm_component.sm_proc_connect){
|
|
free(mca_btl_sm_component.sm_proc_connect);
|
|
mca_btl_sm_component.sm_proc_connect=NULL;
|
|
}
|
|
|
|
return return_code;
|
|
}
|
|
|
|
int mca_btl_sm_del_procs(
|
|
struct mca_btl_base_module_t* btl,
|
|
size_t nprocs,
|
|
struct ompi_proc_t **procs,
|
|
struct mca_btl_base_endpoint_t **peers)
|
|
{
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* MCA->BTL Clean up any resources held by BTL module
|
|
* before the module is unloaded.
|
|
*
|
|
* @param btl (IN) BTL module.
|
|
*
|
|
* Prior to unloading a BTL module, the MCA framework will call
|
|
* the BTL finalize method of the module. Any resources held by
|
|
* the BTL should be released and if required the memory corresponding
|
|
* to the BTL module freed.
|
|
*
|
|
*/
|
|
|
|
int mca_btl_sm_finalize(struct mca_btl_base_module_t* btl)
|
|
{
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Register a callback function that is called on receipt
|
|
* of a fragment.
|
|
*
|
|
* @param btl (IN) BTL module
|
|
* @return Status indicating if cleanup was successful
|
|
*
|
|
* When the process list changes, the PML notifies the BTL of the
|
|
* change, to provide the opportunity to cleanup or release any
|
|
* resources associated with the peer.
|
|
*/
|
|
|
|
int mca_btl_sm_register(
|
|
struct mca_btl_base_module_t* btl,
|
|
mca_btl_base_tag_t tag,
|
|
mca_btl_base_module_recv_cb_fn_t cbfunc,
|
|
void* cbdata)
|
|
{
|
|
mca_btl_sm_t* sm_btl = (mca_btl_sm_t*)btl;
|
|
sm_btl->sm_reg[tag].cbfunc = cbfunc;
|
|
sm_btl->sm_reg[tag].cbdata = cbdata;
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Allocate a segment.
|
|
*
|
|
* @param btl (IN) BTL module
|
|
* @param size (IN) Request segment size.
|
|
*/
|
|
extern mca_btl_base_descriptor_t* mca_btl_sm_alloc(
|
|
struct mca_btl_base_module_t* btl,
|
|
size_t size)
|
|
{
|
|
mca_btl_sm_frag_t* frag;
|
|
int rc;
|
|
if(size <= mca_btl_sm_component.eager_limit) {
|
|
MCA_BTL_SM_FRAG_ALLOC1(frag,rc);
|
|
} else if (size <= mca_btl_sm_component.max_frag_size) {
|
|
MCA_BTL_SM_FRAG_ALLOC2(frag,rc);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
frag->segment.seg_len = size;
|
|
return (mca_btl_base_descriptor_t*)frag;
|
|
}
|
|
|
|
/**
|
|
* Return a segment allocated by this BTL.
|
|
*
|
|
* @param btl (IN) BTL module
|
|
* @param segment (IN) Allocated segment.
|
|
*/
|
|
extern int mca_btl_sm_free(
|
|
struct mca_btl_base_module_t* btl,
|
|
mca_btl_base_descriptor_t* des)
|
|
{
|
|
mca_btl_sm_frag_t* frag = (mca_btl_sm_frag_t*)des;
|
|
if(frag->size == mca_btl_sm_component.eager_limit) {
|
|
MCA_BTL_SM_FRAG_RETURN1(frag);
|
|
} else {
|
|
MCA_BTL_SM_FRAG_RETURN2(frag);
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Pack data
|
|
*
|
|
* @param btl (IN) BTL module
|
|
*/
|
|
struct mca_btl_base_descriptor_t* mca_btl_sm_prepare_src(
|
|
struct mca_btl_base_module_t* btl,
|
|
struct mca_btl_base_endpoint_t* endpoint,
|
|
mca_mpool_base_registration_t* registration,
|
|
struct ompi_convertor_t* convertor,
|
|
size_t reserve,
|
|
size_t* size)
|
|
{
|
|
mca_btl_sm_frag_t* frag;
|
|
struct iovec iov;
|
|
uint32_t iov_count = 1;
|
|
size_t max_data = *size;
|
|
int32_t free_after;
|
|
int rc;
|
|
|
|
MCA_BTL_SM_FRAG_ALLOC2(frag, rc);
|
|
if(NULL == frag) {
|
|
return NULL;
|
|
}
|
|
|
|
if(reserve + max_data > frag->size) {
|
|
max_data = frag->size - reserve;
|
|
}
|
|
iov.iov_len = max_data;
|
|
iov.iov_base = (void*)(((unsigned char*)(frag+1)) + reserve);
|
|
|
|
rc = ompi_convertor_pack(convertor, &iov, &iov_count, &max_data, &free_after);
|
|
if(rc < 0) {
|
|
MCA_BTL_SM_FRAG_RETURN2(frag);
|
|
return NULL;
|
|
}
|
|
frag->segment.seg_len = reserve + max_data;
|
|
*size = max_data;
|
|
return &frag->base;
|
|
}
|
|
|
|
|
|
/**
|
|
* Initiate a send to the peer.
|
|
*
|
|
* @param btl (IN) BTL module
|
|
* @param peer (IN) BTL peer addressing
|
|
*/
|
|
|
|
int mca_btl_sm_send(
|
|
struct mca_btl_base_module_t* btl,
|
|
struct mca_btl_base_endpoint_t* endpoint,
|
|
struct mca_btl_base_descriptor_t* descriptor,
|
|
mca_btl_base_tag_t tag)
|
|
{
|
|
mca_btl_sm_frag_t* frag = (mca_btl_sm_frag_t*)descriptor;
|
|
int rc;
|
|
|
|
frag->tag = tag;
|
|
frag->type = MCA_BTL_SM_FRAG_SEND;
|
|
frag->rc = OMPI_SUCCESS;
|
|
|
|
/*
|
|
* post the descriptor in the queue - post with the relative
|
|
* address
|
|
*/
|
|
MCA_BTL_SM_FIFO_WRITE(endpoint->my_smp_rank,endpoint->peer_smp_rank, frag, rc);
|
|
return rc;
|
|
}
|
|
|
|
|