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openmpi/ompi/mca/coll/sm2/coll_sm2_module.c
Rich Graham 7ef1550267 add an index to indicate which socket group I belong to. 
This commit was SVN r20672.
2009-03-02 14:39:54 +00:00

1616 строки
56 KiB
C
Исходник Ответственный История

/*
* Copyright (c) 2004-2007 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*
* Most of the description of the data layout is in the
* coll_sm_module.c file.
*/
#include "ompi_config.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>
#include "ompi/constants.h"
#include "ompi/communicator/communicator.h"
#include "ompi/mca/coll/coll.h"
#include "opal/util/show_help.h"
#include "opal/util/output.h"
#include "coll_sm2.h"
#include "ompi/mca/coll/base/base.h"
#include "ompi/mca/dpm/dpm.h"
#include "orte/mca/rml/rml.h"
#include "orte/util/proc_info.h"
#include "orte/util/name_fns.h"
#include "opal/mca/paffinity/base/base.h"
#include "orte/mca/grpcomm/grpcomm.h"
/*
* Local functions
*/
static int sm2_module_enable(mca_coll_base_module_t *module,
struct ompi_communicator_t *comm);
#if 0
/* debug */
extern int debug_print;
extern int my_debug_rank;
extern int my_debug_comm_size;
extern void debug_module(void);
extern int last_root;
extern int node_type;
long long free_buff_free_index=-1;
static mca_coll_sm2_module_t *module_dbg;
static int blocking_cnt=0;
void debug_module(void) {
int i,j,k;
char *ptr;
int barrier_index,index;
long long br_tag;
mca_coll_sm2_nb_request_process_shared_mem_t * ctl_ptr;
/* control regions */
if ( 0 == my_debug_rank ) {
for( i=0 ; i < 2 ; i++ ) {
for( j=0 ; j < 2 ; j++ ) {
fprintf(stderr," bank %d index %d \n", i,j);
for( k=0 ; k < my_debug_comm_size ; k++ ) {
ctl_ptr=module_dbg->barrier_request[i].barrier_base_address[j];
ctl_ptr=(mca_coll_sm2_nb_request_process_shared_mem_t *) (
(char *)ctl_ptr+k*module_dbg->sm2_size_management_region_per_proc
);
fprintf(stderr," bank %d index %d flag %lld \n",
i,j,ctl_ptr->flag);
}
}
}
}
/* data regions */
fprintf(stderr," my_debug_rank %d current index %d freed index %d coll_tag %lld debug stat %d blocking_cnt %d last_root %d free_buff_free_index %lld node_type %d \n",
my_debug_rank,
module_dbg->sm2_allocated_buffer_index,module_dbg->sm2_freed_buffer_index,
module_dbg->collective_tag,
module_dbg->blocked_on_barrier,blocking_cnt,last_root,
free_buff_free_index,node_type);
barrier_index=(module_dbg->num_nb_barriers_completed%
module_dbg->sm2_module_num_memory_banks);
index=module_dbg->barrier_request[barrier_index].sm_index;
fprintf(stderr," my_debug_rank %d started %lld completed %lld bank %d index %d br_tag %lld \n",
my_debug_rank,
module_dbg->num_nb_barriers_started,
module_dbg->num_nb_barriers_completed,
barrier_index,index,
module_dbg->barrier_request[barrier_index].tag);
fprintf(stderr," my_debug_rank %d barrier_bank_cntr %lld ",
my_debug_rank,module_dbg->barrier_bank_cntr);
for( i=0 ; i < BARRIER_BANK_LIST_SIZE ; i++ )
fprintf(stderr,"%2d",module_dbg->barrier_bank_list[i]);
fprintf(stderr," \n");
if( 0 == my_debug_rank ) {
for( i=0 ; i < module_dbg->sm2_module_num_buffers ; i++ ) {
for( j=0 ; j < my_debug_comm_size ; j++ ) {
fprintf(stderr," buffer index %d tag %lld ptr %p \n",
i,
module_dbg->sm_buffer_descriptor[i].proc_memory[j].control_region->flag,
module_dbg->sm_buffer_descriptor[i].proc_memory[j].control_region);
}
}
}
fflush(stderr);
return;
}
/* end debug */
#endif
/*
* Local functions
*/
static void
mca_coll_sm2_module_construct(mca_coll_sm2_module_t *module)
{
}
static void
mca_coll_sm2_module_destruct(mca_coll_sm2_module_t *module)
{
int i,ret;
/* free the mmaped shared file */
if( module->shared_memory_region) {
ret=munmap(module->shared_memory_region,
module->size_sm2_backing_file);
/* this is cleanup, no recovery will be done */
}
/* free list of children in the barrier-tree */
if( NULL != module->sm_buffer_mgmt_barrier_tree.children_ranks ) {
free(module->sm_buffer_mgmt_barrier_tree.children_ranks);
}
/* free non-blocking barrier request objects */
if( NULL != module->barrier_request ) {
free(module->barrier_request);
}
/* free reduction tree */
if( NULL != module->reduction_tree ) {
for( i=0 ; i < module->comm_size ; i++ ) {
if( NULL != module->reduction_tree[i].children_ranks) {
free(module->reduction_tree[i].children_ranks);
}
}
free(module->reduction_tree);
}
/* free fan-out read tree */
if( NULL != module->fanout_read_tree ) {
for( i=0 ; i < module->comm_size ; i++ ) {
if( NULL != module->fanout_read_tree[i].children_ranks) {
free(module->fanout_read_tree[i].children_ranks);
}
}
free(module->fanout_read_tree);
}
/* done */
}
static bool have_local_peers(ompi_group_t *group, size_t size)
{
size_t i;
ompi_proc_t *proc;
for (i = 0; i < size; ++i) {
proc = ompi_group_peer_lookup(group,i);
if (!OPAL_PROC_ON_LOCAL_NODE(proc->proc_flags)) {
return false;
}
}
return true;
}
/*
* Create mmaped shared file
*/
static int allocate_shared_file(size_t size, char **file_name,
struct ompi_communicator_t *comm, char **sm_backing_file)
{
int fd = -1;
int group_size,my_rank;
int unique_comm_id;
size_t len;
char *f_name;
bool i_create_shared_file=false;
ssize_t p;
int rc=0, sm_file_inited=0;
struct iovec iov[3];
int sm_file_created;
ompi_proc_t **comm_proc_list;
/* get the list of procs */
comm_proc_list=comm->c_local_group->grp_proc_pointers;
group_size=ompi_comm_size(comm);
my_rank=ompi_comm_rank(comm);
/* determine who will actually create the file */
if( my_rank == 0 ) {
i_create_shared_file=true;
}
/* open the backing file. */
if( i_create_shared_file ) {
/*
* set file name
*/
/* generate id that will be different for non-overlapping
* communicators.
*/
unique_comm_id=(int)getpid();
len=asprintf(&f_name,
"%s"OPAL_PATH_SEP"sm_coll_v2_%0d_%0d",orte_process_info.job_session_dir,
ompi_comm_get_cid(comm),unique_comm_id);
if( 0 > len ) {
return OMPI_ERROR;
}
*file_name=f_name;
/* process initializing the file */
fd = open(*file_name, O_CREAT|O_RDWR, 0600);
if (fd < 0) {
opal_output(0,"mca_common_sm_mmap_init: open %s len %ld failed with errno=%d\n",
*file_name, len, errno);
goto file_opened;
}
/* map the file and initialize segment state */
*sm_backing_file = (char *)
mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if( (void*)-1 == sm_backing_file ) {
opal_output(0, "mca_common_sm_mmap_init: mmap failed with errno=%d\n",
errno);
goto file_opened;
}
/* truncate the file to the requested size */
if(ftruncate(fd, size) != 0) {
opal_output(0,
"mca_common_sm_mmap_init: ftruncate failed with errno=%d\n",
errno);
goto file_opened;
}
/* if we got this far, the file has been initialized correctly */
sm_file_inited=1;
file_opened:
/* signal the rest of the local procs that the backing file
* has been created - not very scalable, but for small shared
* memory nodes is adequate for now
*/
for(p=1 ; p < group_size ; p++ ) {
sm_file_created=OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED;
iov[0].iov_base=&sm_file_created;
iov[0].iov_len=sizeof(sm_file_created);
iov[1].iov_base=&sm_file_inited;
iov[1].iov_len=sizeof(sm_file_inited);
iov[2].iov_base=&unique_comm_id;
iov[2].iov_len=sizeof(unique_comm_id);
rc=orte_rml.send(&(comm_proc_list[p]->proc_name),iov,3,
OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED,0);
if( rc < 0 ) {
opal_output(0,
"allocate_shared_file: orte_rml.send failed to %lu with errno=%d\n",
(unsigned long)p, errno);
goto return_error;
}
}
if ( 0 == sm_file_inited ) {
/* error - the sm backing file did not get opened correctly */
goto return_error;
}
} else {
/* all other procs wait for the file to be initialized
before using the backing file */
iov[0].iov_base=&sm_file_created;
iov[0].iov_len=sizeof(sm_file_created);
iov[1].iov_base=&sm_file_inited;
iov[1].iov_len=sizeof(sm_file_inited);
iov[2].iov_base=&unique_comm_id;
iov[2].iov_len=sizeof(unique_comm_id);
rc=orte_rml.recv(&(comm_proc_list[0]->proc_name),iov,3,
OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED,0);
if( rc < 0 ) {
opal_output(0, "allocate_shared_file: orte_rml.recv failed from %ld with errno=%d\n",
0L, errno);
goto return_error;
}
/* check to see if file inited correctly */
if( 0 == sm_file_inited ) {
goto return_error;
}
/* set file name - we need the unique id for non-overlapping
* communicators, that could have the same communicator id
*/
len=asprintf(&f_name,
"%s"OPAL_PATH_SEP"sm_coll_v2_%0d_%0d",orte_process_info.job_session_dir,
ompi_comm_get_cid(comm),unique_comm_id);
if( 0 > len ) {
return OMPI_ERROR;
}
*file_name=f_name;
/* open backing file */
fd = open(*file_name, O_RDWR, 0600);
if (fd < 0) {
opal_output(0,"mca_common_sm_mmap_init: open %s len %ld failed with errno=%d\n",
*file_name, len, errno);
goto return_error;
}
/* map the file and initialize segment state */
*sm_backing_file = (char *)
mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if( (void*)-1 == sm_backing_file ) {
opal_output(0, "mca_common_sm_mmap_init: mmap failed with errno=%d\n",
errno);
goto return_error;
}
}
/* enable access by other processes on this host */
close(fd);
return OMPI_SUCCESS;
return_error:
if( -1 != fd ) {
close(fd);
}
if( NULL != sm_backing_file ) munmap((void*) sm_backing_file,size);
return OMPI_ERROR;
}
static
int barrier( struct ompi_communicator_t *comm ,
tree_node_t *multinomial_tree)
{
int group_size,my_rank,n_children,child,n_parents,my_fanout_parent;
int child_rank, dummy;
tree_node_t *my_node;
int rc=0;
struct iovec iov;
ompi_proc_t **comm_proc_list;
/* get the list of procs */
comm_proc_list=comm->c_local_group->grp_proc_pointers;
group_size=ompi_comm_size(comm);
my_rank=ompi_comm_rank(comm);
my_node=&(multinomial_tree[my_rank]);
n_children=my_node->n_children;
n_parents=my_node->n_parents;
my_fanout_parent=my_node->parent_rank;
/*
* fan in
*/
/* receive from the children */
for( child=0 ; child < n_children ; child++ ) {
child_rank=my_node->children_ranks[child];
iov.iov_base=&dummy;
iov.iov_len=sizeof(dummy);
rc=orte_rml.recv(&(comm_proc_list[child_rank]->proc_name),&iov,1,
OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED,0);
if( rc < 0 ) {
opal_output(0,
"sm barrier fan-in: orte_rml.recv failed to %lu with errno=%d\n",
(unsigned long)child_rank, errno);
goto return_error;
}
}
/* send to parent */
if( 0 < n_parents ) {
iov.iov_base=&dummy;
iov.iov_len=sizeof(dummy);
rc=orte_rml.send(&(comm_proc_list[my_fanout_parent]->proc_name),&iov,1,
OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED,0);
if( rc < 0 ) {
opal_output(0,
"sm barrier fan-in: orte_rml.send failed to %lu with errno=%d\n",
(unsigned long)my_fanout_parent, errno);
goto return_error;
}
}
/*
* Fan out
*/
/* receive from parent */
if( 0 < n_parents ) {
iov.iov_base=&dummy;
iov.iov_len=sizeof(dummy);
rc=orte_rml.recv(&(comm_proc_list[my_fanout_parent]->proc_name),&iov,1,
OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED,0);
if( rc < 0 ) {
opal_output(0,
"sm barrier fan-out: orte_rml.recv failed to %lu with errno=%d\n",
(unsigned long)my_fanout_parent, errno);
goto return_error;
}
}
/* send to children */
for( child=0 ; child < n_children ; child++ ) {
child_rank=my_node->children_ranks[child];
iov.iov_base=&dummy;
iov.iov_len=sizeof(dummy);
rc=orte_rml.send(&(comm_proc_list[child_rank]->proc_name),&iov,1,
OMPI_RML_TAG_COLL_SM2_BACK_FILE_CREATED,0);
if( rc < 0 ) {
opal_output(0,
"sm barrier fan-out: orte_rml.send failed to %lu with errno=%d\n",
(unsigned long)child_rank, errno);
goto return_error;
}
}
return OMPI_SUCCESS;
return_error:
return OMPI_ERROR;
}
/* setup an n-array tree */
static int setup_nary_tree(int tree_order, int my_rank, int num_nodes,
tree_node_t *my_node)
{
/* local variables */
int n_levels, result;
int my_level_in_tree, cnt, parent_cnt;
int lvl,cum_cnt, my_rank_in_my_level,n_lvls_in_tree;
int start_index,end_index;
/* sanity check */
if( 1 >= tree_order ) {
goto Error;
}
my_node->my_rank=my_rank;
my_node->tree_size=num_nodes;
/* figure out number of levels in tree */
n_levels=0;
result=num_nodes-1;
while (0 < result ) {
result/=tree_order;
n_levels++;
};
/* figure out who my children and parents are */
my_level_in_tree=-1;
result=my_rank;
/* cnt - number of ranks in given level */
cnt=1;
/* parent_cnt - cummulative count of ranks */
parent_cnt=0;
while( 0 <= result ) {
result-=cnt;
cnt*=tree_order;
my_level_in_tree++;
};
/* int my_level_in_tree, n_children, n_parents; */
if( 0 == my_rank ) {
my_node->n_parents=0;
my_node->parent_rank=-1;
my_rank_in_my_level=0;
} else {
my_node->n_parents=1;
cnt=1;
cum_cnt=0;
for (lvl = 0 ; lvl < my_level_in_tree ; lvl ++ ) {
/* cummulative count up to this level */
cum_cnt+=cnt;
/* number of ranks in this level */
cnt*=tree_order;
}
my_rank_in_my_level=my_rank-cum_cnt;
/* tree_order consecutive ranks have the same parent */
my_node->parent_rank=cum_cnt-cnt/tree_order+my_rank_in_my_level/tree_order;
}
/* figure out number of levels in the tree */
n_lvls_in_tree=0;
result=num_nodes;
/* cnt - number of ranks in given level */
cnt=1;
/* parent_cnt - cummulative count of ranks */
parent_cnt=0;
while( 0 < result ) {
result-=cnt;
cnt*=tree_order;
n_lvls_in_tree++;
};
my_node->children_ranks=(int *)NULL;
/* get list of children */
if( my_level_in_tree == (n_lvls_in_tree -1 ) ) {
/* last level has no children */
my_node->n_children=0;
} else {
cum_cnt=0;
cnt=1;
for( lvl=0 ; lvl <= my_level_in_tree ; lvl++ ) {
cum_cnt+=cnt;
cnt*=tree_order;
}
start_index=cum_cnt+my_rank_in_my_level*tree_order;
end_index=start_index+tree_order-1;
/* don't go out of bounds at the end of the list */
if( end_index >= num_nodes ) {
end_index = num_nodes-1;
}
if( start_index <= (num_nodes-1) ) {
my_node->n_children=end_index-start_index+1;
} else {
my_node->n_children=0;
}
my_node->children_ranks=NULL;
if( 0 < my_node->n_children ) {
my_node->children_ranks=
(int *)malloc( sizeof(int)*my_node->n_children);
if( NULL == my_node->children_ranks) {
goto Error;
}
for (lvl= start_index ; lvl <= end_index ; lvl++ ) {
my_node->children_ranks[lvl-start_index]=lvl;
}
}
}
/* set node type */
if( 0 == my_node->n_parents ) {
my_node->my_node_type=ROOT_NODE;
} else if ( 0 == my_node->n_children ) {
my_node->my_node_type=LEAF_NODE;
} else {
my_node->my_node_type=INTERIOR_NODE;
}
/* successful return */
return OMPI_SUCCESS;
Error:
/* error return */
return OMPI_ERROR;
}
/* initialize barrier structures */
static int init_sm2_barrier(struct ompi_communicator_t *comm,
mca_coll_sm2_component_t *component,
mca_coll_sm2_module_t *module) {
/*local variables */
int i,j,k,comm_size, my_rank, tree_order, rc;
mca_coll_sm2_nb_request_process_shared_mem_t *sm_address;
/* get order of fan-in and fan-out tree */
tree_order=component->order_barrier_tree;
/* get communicator size */
comm_size=ompi_comm_size(comm);
/* get rank within communictor */
my_rank=ompi_comm_rank(comm);
/* initialize fan-in/fan-out tree */
rc=setup_nary_tree(tree_order, my_rank, comm_size,
&(module->sm_buffer_mgmt_barrier_tree));
if( OMPI_SUCCESS != rc ) {
goto Error;
}
/* Allocate barrier control structures - allocating one barrier structure
* per memory bank. Allocating two shared memory regions per bank. */
module->barrier_request=(mca_coll_sm2_nb_request_process_private_mem_t *)
malloc(sizeof(mca_coll_sm2_nb_request_process_private_mem_t) *
component->sm2_num_mem_banks);
if( NULL == module->barrier_request ){
rc=OMPI_ERROR;
goto Error;
}
module->nb_barrier_tag=0;
/* initialize barrier control structures */
for(i=0 ; i < component->sm2_num_mem_banks ; i++ ) {
module->barrier_request[i].tag=0;
module->barrier_request[i].sm_index=0;
module->barrier_request[i].sm2_barrier_phase=NB_BARRIER_INACTIVE;
/* set the base address of each barrier's shared memory regions */
for( j =0 ; j < 2 ; j++ ) {
module->barrier_request[i].barrier_base_address[j]=
(mca_coll_sm2_nb_request_process_shared_mem_t *)
(module->shared_memory_region +
/* there are 2 barrier structs per bank */
(2*i+j)*CACHE_LINE_SIZE);
/* initialize per-process flags */
for(k=0 ; k < comm_size ; k++ ) {
sm_address=(mca_coll_sm2_nb_request_process_shared_mem_t *)
((char *)
(module->barrier_request[i].barrier_base_address[j])+
k*module->sm2_size_management_region_per_proc);
sm_address->flag=0;
}
}
}
module->num_nb_barriers_started=0;
module->num_nb_barriers_completed=0;
/* set pointer to the collective operation buffers */
module->collective_buffer_region=module->shared_memory_region+
module->sm2_size_management_region_per_proc*
module->sm_buffer_mgmt_barrier_tree.tree_size;
/* set the pointer to the request that needs to be completed first */
module->current_request_index=0;
/* set starting collective tag */
module->collective_tag=1;
/* return - successful */
return OMPI_SUCCESS;
Error:
return rc;
}
/* query to see if the module is available for use on the given
* communicator, and if so, what it's priority is. This is where
* the backing shared-memory file is created.
*/
mca_coll_base_module_t *
mca_coll_sm2_comm_query(struct ompi_communicator_t *comm, int *priority)
{
/* local variables */
mca_coll_sm2_module_t *sm_module;
int i,j,group_size,ret,proc;
int my_socket_index,num_procs,socket,socket_tmp,core,n_sockets,cnt;
size_t alignment,size;
size_t tot_size_mem_banks;
size_t ctl_memory_per_proc_per_segment;
size_t mem_management_per_proc_per_block;
size_t mem_management_per_proc;
size_t mem_management_total;
size_t size_sm2_backing_file;
size_t size_buff_ctl_per_proc,size_data_buff_per_proc;
/*
* This is activated only for intra-communicators
*/
if (OMPI_COMM_IS_INTER(comm) ) {
return NULL;
}
/*
* Use only if more than on proc in the communicator
*/
if (1 == ompi_comm_size(comm) ) {
return NULL;
}
/* check to see if all procs are on the same node, and therefore
* can communicate using shared memory
*/
if ( !have_local_peers(comm->c_local_group, ompi_comm_size(comm))) {
return NULL;
}
/* Get our priority */
*priority = mca_coll_sm2_component.sm2_priority;
/* allocate and initialize an sm-v2 module */
sm_module = OBJ_NEW(mca_coll_sm2_module_t);
sm_module->super.coll_module_enable = sm2_module_enable;
sm_module->super.ft_event = NULL;
sm_module->super.coll_allgather = NULL;
sm_module->super.coll_allgatherv = NULL;
sm_module->super.coll_allreduce = mca_coll_sm2_allreduce_intra;
sm_module->super.coll_alltoall = NULL;
sm_module->super.coll_alltoallv = NULL;
sm_module->super.coll_alltoallw = NULL;
sm_module->super.coll_barrier = mca_coll_sm2_barrier_intra;
sm_module->super.coll_bcast = mca_coll_sm2_bcast_intra;
sm_module->super.coll_exscan = NULL;
sm_module->super.coll_gather = NULL;
sm_module->super.coll_gatherv = NULL;
sm_module->super.coll_reduce = mca_coll_sm2_reduce_intra;
sm_module->super.coll_reduce_scatter = NULL;
sm_module->super.coll_scan = NULL;
sm_module->super.coll_scatter = NULL;
sm_module->super.coll_scatterv = NULL;
/*
* set up specific function to be used
*/
/* barrier */
sm_module->barrier_functions[FANIN_FAN_OUT_BARRIER_FN]=
mca_coll_sm2_barrier_intra_fanin_fanout;
sm_module->barrier_functions[RECURSIVE_DOUBLING_BARRIER_FN]=
mca_coll_sm2_barrier_intra_fanin_fanout;
if( ( 0 <= mca_coll_sm2_component.force_barrier ) &&
( N_BARRIER_FNS > mca_coll_sm2_component.force_barrier ) ) {
/* set user specifed function */
mca_coll_base_module_barrier_fn_t tmp_fn=
sm_module->barrier_functions[mca_coll_sm2_component.force_barrier];
sm_module->barrier_functions[FANIN_FAN_OUT_BARRIER_FN]=tmp_fn;
sm_module->barrier_functions[RECURSIVE_DOUBLING_BARRIER_FN]=tmp_fn;
}
/* reduce */
sm_module->list_reduce_functions[FANIN_REDUCE_FN]=
mca_coll_sm2_reduce_intra_fanin;
sm_module->list_reduce_functions[REDUCE_SCATTER_GATHER_FN]=
mca_coll_sm2_reduce_intra_reducescatter_gather;
sm_module->reduce_functions[SHORT_DATA_FN_REDUCE]=
sm_module->list_reduce_functions[FANIN_REDUCE_FN];
sm_module->reduce_functions[LONG_DATA_FN_REDUCE]=
sm_module->list_reduce_functions[REDUCE_SCATTER_GATHER_FN];
if( ( 0 <= mca_coll_sm2_component.force_reduce ) &&
( N_REDUCE_FNS > mca_coll_sm2_component.force_reduce ) ) {
/* set user specifed function */
mca_coll_base_module_reduce_fn_t tmp_fn=sm_module->
list_reduce_functions[mca_coll_sm2_component.force_reduce];
sm_module->reduce_functions[SHORT_DATA_FN_REDUCE]=tmp_fn;
sm_module->reduce_functions[LONG_DATA_FN_REDUCE]=tmp_fn;
}
/* allreduce */
sm_module->list_allreduce_functions[FANIN_FANOUT_ALLREDUCE_FN]=
mca_coll_sm2_allreduce_intra_fanin_fanout;
sm_module->list_allreduce_functions[REDUCE_SCATTER_ALLGATHER_FN]=
mca_coll_sm2_allreduce_intra_reducescatter_allgather;
sm_module->allreduce_functions[SHORT_DATA_FN_ALLREDUCE]=
sm_module->list_allreduce_functions[FANIN_FANOUT_ALLREDUCE_FN];
sm_module->allreduce_functions[LONG_DATA_FN_ALLREDUCE]=
sm_module->list_allreduce_functions[REDUCE_SCATTER_ALLGATHER_FN];
if( ( 0 <= mca_coll_sm2_component.force_allreduce ) &&
( N_ALLREDUCE_FNS > mca_coll_sm2_component.force_allreduce ) ) {
/* set user specifed function */
mca_coll_base_module_allreduce_fn_t tmp_fn=sm_module->
list_allreduce_functions[mca_coll_sm2_component.force_allreduce];
sm_module->allreduce_functions[SHORT_DATA_FN_ALLREDUCE]=tmp_fn;
sm_module->allreduce_functions[LONG_DATA_FN_ALLREDUCE]=tmp_fn;
}
/*
* Some initialization
*/
sm_module->reduction_tree=NULL;
sm_module->fanout_read_tree=NULL;
/*
* create backing file
*/
/*
* set group size
*/
group_size=ompi_comm_size(comm);
sm_module->module_comm=comm;
sm_module->comm_size=group_size;
sm_module->n_poll_loops=mca_coll_sm2_component.n_poll_loops;
/*
* set memory region parameters
*/
sm_module->sm2_module_num_memory_banks=
mca_coll_sm2_component.sm2_num_mem_banks;
sm_module->sm2_module_num_regions_per_bank=
mca_coll_sm2_component.sm2_num_regions_per_bank;
sm_module->sm2_module_num_buffers=
mca_coll_sm2_component.sm2_num_regions_per_bank *
mca_coll_sm2_component.sm2_num_mem_banks;
/* allocate the array of memory descriptors used to describe the
* shared memory buffers. This structure resides in process
* private memory, but describes the shared memory.
*/
sm_module->sm_buffer_descriptor=(sm_work_buffer_t *)malloc(
sizeof(sm_work_buffer_t)*sm_module->sm2_module_num_buffers);
if( NULL == sm_module->sm_buffer_descriptor ) {
goto CLEANUP;
}
#if 0 /* data buffers and management buffers are allocated in a single
* contigous region */
/*
* Now figure out how much memory to allocate for use as
* working memory for the shared memory collectives.
*/
/*
* get control region size
*/
/* just enough place for two flags per process */
ctl_memory_per_proc_per_segment=2*sizeof(long long);
if( mca_coll_sm2_component.sm2_ctl_size_per_proc > ctl_memory_per_proc_per_segment )
ctl_memory_per_proc_per_segment=mca_coll_sm2_component.sm2_ctl_size_per_proc;
/* pad this up to the alignment needed by the data segment, as the
* that data segment will directly follow the control segment in
* memory.
*/
alignment=mca_coll_sm2_component.sm2_data_alignment;
ctl_memory_per_proc_per_segment=
(alignment + ctl_memory_per_proc_per_segment -1) / alignment;
ctl_memory_per_proc_per_segment*=alignment;
mca_coll_sm2_component.sm2_ctl_size_allocated=ctl_memory_per_proc_per_segment;
sm_module->ctl_memory_per_proc_per_segment=ctl_memory_per_proc_per_segment;
/* get data region size - allocation happens on a page granularity, with
* a minimum of a page allocated per proc, so adjust to this
*/
size=mca_coll_sm2_component.sm2_data_seg_size;
if( size > mca_coll_sm2_component.sm2_max_data_seg_size )
size=mca_coll_sm2_component.sm2_max_data_seg_size;
size_tot_per_proc_per_seg=size+ mca_coll_sm2_component.sm2_ctl_size_per_proc;
if( size_tot_per_proc_per_seg < getpagesize())
size_tot_per_proc_per_seg=getpagesize();
/* round this up to the nearest integer page-size multiple */
size_tot_per_proc_per_seg= ( size_tot_per_proc_per_seg + getpagesize() - 1)/
getpagesize();
size_tot_per_proc_per_seg*=getpagesize();
/* compute segment memory needed */
size_tot_per_segment=group_size * size_tot_per_proc_per_seg ;
sm_module->segement_size_per_process=size_tot_per_proc_per_seg;
sm_module->segment_size=size_tot_per_segment;
sm_module->data_memory_per_proc_per_segment=size_tot_per_proc_per_seg-
ctl_memory_per_proc_per_segment;
/* compute memory per bank */
tot_size_per_bank=size_tot_per_segment*mca_coll_sm2_component.sm2_num_regions_per_bank;
/* compute total memory in the memory banks */
tot_size_mem_banks=tot_size_per_bank*mca_coll_sm2_component.sm2_num_mem_banks;
sm_module->data_memory_per_proc_per_segment=size_tot_per_proc_per_seg-
ctl_memory_per_proc_per_segment;
#endif
/* management structures are allocated is a one segment, and data buffers
* in a separate segment
*/
/*
* Now figure out how much memory to allocate for use as
* working memory for the shared memory collectives.
*/
/*
* get control region size
*/
/* just enough place for two flags per process */
ctl_memory_per_proc_per_segment=2*sizeof(long long);
if( mca_coll_sm2_component.sm2_ctl_size_per_proc > ctl_memory_per_proc_per_segment )
ctl_memory_per_proc_per_segment=mca_coll_sm2_component.sm2_ctl_size_per_proc;
/* pad this up to the alignment needed by the data segment, as the
* that data segment will directly follow the control segment in
* memory.
*/
alignment=mca_coll_sm2_component.sm2_data_alignment;
ctl_memory_per_proc_per_segment=
(alignment + ctl_memory_per_proc_per_segment -1) / alignment;
ctl_memory_per_proc_per_segment*=alignment;
mca_coll_sm2_component.sm2_ctl_size_allocated=ctl_memory_per_proc_per_segment;
sm_module->ctl_memory_per_proc_per_segment=ctl_memory_per_proc_per_segment;
/* get data region size - allocation happens on a page granularity, with
* a minimum of a page allocated per proc, so adjust to this
*/
size=mca_coll_sm2_component.sm2_data_seg_size;
if( size < getpagesize() )
size=getpagesize();
if( size > mca_coll_sm2_component.sm2_max_data_seg_size )
size=mca_coll_sm2_component.sm2_max_data_seg_size;
size= ( size + getpagesize() - 1)/getpagesize();
size*=getpagesize();
sm_module->segment_size=size*group_size;
size_data_buff_per_proc=size;
/* compute size of management region - per proc */
size_buff_ctl_per_proc=
ctl_memory_per_proc_per_segment*sm_module->sm2_module_num_buffers;
size_buff_ctl_per_proc= ( size_buff_ctl_per_proc + getpagesize() - 1)/
getpagesize();
size_buff_ctl_per_proc*=getpagesize();
tot_size_mem_banks=
/* size of buffer conrol region */
size_buff_ctl_per_proc*group_size+
/* size of data buffers */
size*sm_module->sm2_module_num_buffers*group_size;
sm_module->size_of_collective_buffer_region=tot_size_mem_banks;
sm_module->data_memory_per_proc_per_segment=size;
/*
* compute the amount of memory needed for the anynchromous barriers used to
* manage the memory resources.
*/
/* for each bank, 2 sets of barrier buffers */
mem_management_per_proc_per_block= 2 * CACHE_LINE_SIZE ;
/* add in number of banks */
mem_management_per_proc= mem_management_per_proc_per_block *
mca_coll_sm2_component.sm2_num_mem_banks;
/* round up to page multiples */
mem_management_per_proc=(mem_management_per_proc +
getpagesize() -1 ) / getpagesize();
mem_management_per_proc*=getpagesize();
/* size of memory region, per process, for memory bank management */
sm_module->sm2_size_management_region_per_proc=
mem_management_per_proc;
/* total memory management required */
mem_management_total=mem_management_per_proc * group_size;
sm_module->size_mem_banks_ctl_region=mem_management_total;
/*
* Memory for blocking collectives - need two sets of memory
* regions for this.
*/
/* size per proc */
size=2*sizeof(mca_coll_sm2_nb_request_process_shared_mem_t);
/* page align */
size=(size +
getpagesize() -1 ) / getpagesize();
size*=getpagesize();
sm_module->per_proc_size_of_blocking_barrier_region=size;
sm_module->size_of_blocking_barrier_region=size*group_size;
/* total size of backing file - this assumes the mmap allocation
* occurs on page boundaries, and that all segments are paged
* aligned
*/
size_sm2_backing_file=sm_module->size_mem_banks_ctl_region+
sm_module->size_of_collective_buffer_region+
sm_module->size_of_blocking_barrier_region;
sm_module->size_sm2_backing_file=size_sm2_backing_file;
/* set file name */
/*
len=asprintf(&(sm_module->coll_sm2_file_name),
"%s"OPAL_PATH_SEP"sm_coll_v2%s_%0d\0",orte_process_info.job_session_dir,
orte_process_info.nodename,ompi_comm_get_cid(comm));
if( 0 > len ) {
goto CLEANUP;
}
*/
/* allocate backing file */
ret=allocate_shared_file(size_sm2_backing_file,
&(sm_module->coll_sm2_file_name), comm,
&(sm_module->shared_memory_region));
if( MPI_SUCCESS != ret ) {
goto CLEANUP;
}
/* intialize barrier structures */
ret=init_sm2_barrier(comm, &mca_coll_sm2_component,
sm_module);
if( MPI_SUCCESS != ret ) {
goto CLEANUP;
}
/* initialize reduction tree */
sm_module->reduction_tree=(tree_node_t *) malloc(
sizeof(tree_node_t )*group_size);
if( NULL == sm_module->reduction_tree ) {
goto CLEANUP;
}
ret=setup_multinomial_tree(mca_coll_sm2_component.order_reduction_tree,
group_size,sm_module->reduction_tree);
if( MPI_SUCCESS != ret ) {
goto CLEANUP;
}
/* initialize fan-out read tree */
sm_module->fanout_read_tree=(tree_node_t *) malloc(
sizeof(tree_node_t )*group_size);
if( NULL == sm_module->fanout_read_tree ) {
goto CLEANUP;
}
ret=setup_multinomial_tree(mca_coll_sm2_component.order_fanout_read_tree,
group_size,sm_module->fanout_read_tree);
if( MPI_SUCCESS != ret ) {
goto CLEANUP;
}
/* initialize recursive doubling tree */
ret=setup_recursive_doubling_tree_node(group_size, ompi_comm_rank(comm),
&(sm_module->recursive_doubling_tree));
if( MPI_SUCCESS != ret ) {
goto CLEANUP;
}
/* initialize local counters */
sm_module->sm2_allocated_buffer_index=-1;
sm_module->sm2_freed_buffer_index=-1;
/* setup shared memory memory descriptors */
for( i=0 ; i < sm_module->sm2_module_num_buffers ; i++ ) {
char *base_buffer;
volatile mca_coll_sm2_nb_request_process_shared_mem_t *ctl_ptr;
/* set the base address for this working buffer */
base_buffer= sm_module->collective_buffer_region+
/* offset past control data structures */
size_buff_ctl_per_proc*group_size +
i*sm_module->segment_size;
sm_module->sm_buffer_descriptor[i].base_segment_address=base_buffer;
/* allocate array to keep data on each segment in the buffer.
* One segment per process in the group.
*/
sm_module->sm_buffer_descriptor[i].proc_memory=
(sm_memory_region_desc_t *)malloc(sizeof(sm_memory_region_desc_t)*
group_size);
if( NULL == sm_module->sm_buffer_descriptor[i].proc_memory ) {
goto CLEANUP;
}
/* set bank index */
sm_module->sm_buffer_descriptor[i].bank_index=
i/sm_module->sm2_module_num_regions_per_bank;
sm_module->sm_buffer_descriptor[i].index_first_buffer_in_bank=
sm_module->sm_buffer_descriptor[i].bank_index *
sm_module->sm2_module_num_regions_per_bank;
sm_module->sm_buffer_descriptor[i].index_last_buffer_in_bank=
((sm_module->sm_buffer_descriptor[i].bank_index+1) *
sm_module->sm2_module_num_regions_per_bank)-1;
for(j=0 ; j < group_size ; j++ ) {
ctl_ptr=(volatile mca_coll_sm2_nb_request_process_shared_mem_t *)
(base_buffer+j* sm_module->segement_size_per_process);
sm_module->sm_buffer_descriptor[i].proc_memory[j].control_region=
(volatile mca_coll_sm2_nb_request_process_shared_mem_t *)
/* offset to temp space */
(sm_module->collective_buffer_region+
/* offset to the per-proc control region */
size_buff_ctl_per_proc*j+
/* offset to control structure for the i'th buffer */
ctl_memory_per_proc_per_segment*i);
sm_module->sm_buffer_descriptor[i].proc_memory[j].data_segment=
(char *)base_buffer+
/* offset to data segment for the j'th proc */
j*size_data_buff_per_proc;
/* initialize the control region */
sm_module->sm_buffer_descriptor[i].proc_memory[j].control_region->
flag=0;
sm_module->sm_buffer_descriptor[i].proc_memory[j].control_region->flag=0;
}
}
/* allocate process private scratch space */
sm_module->scratch_space=(int *)malloc(sizeof(int)*group_size);
if( NULL == sm_module->scratch_space) {
goto CLEANUP;
}
/*
* setup blocking barrier data structures
*/
sm_module->sm_blocking_barrier_region=
sm_module->shared_memory_region+
sm_module->size_mem_banks_ctl_region+
sm_module->size_of_collective_buffer_region;
sm_module->index_blocking_barrier_memory_bank=0;
sm_module->ctl_blocking_barrier=
(volatile mca_coll_sm2_nb_request_process_shared_mem_t ***)
malloc(2*sizeof(mca_coll_sm2_nb_request_process_shared_mem_t **));
if( NULL == sm_module->ctl_blocking_barrier ) {
goto CLEANUP;
}
sm_module->ctl_blocking_barrier[0]=
(mca_coll_sm2_nb_request_process_shared_mem_t **)
malloc(group_size*sizeof(mca_coll_sm2_nb_request_process_shared_mem_t *));
if( NULL == sm_module->ctl_blocking_barrier[0]) {
goto CLEANUP;
}
sm_module->ctl_blocking_barrier[1]=
(mca_coll_sm2_nb_request_process_shared_mem_t **)
malloc(group_size*sizeof(mca_coll_sm2_nb_request_process_shared_mem_t *));
if( NULL == sm_module->ctl_blocking_barrier[1]) {
goto CLEANUP;
}
for( j= 0 ; j < 2 ; j++ ) {
for( i=0 ; i < group_size ; i++ ) {
sm_module->ctl_blocking_barrier[j][i]=
(mca_coll_sm2_nb_request_process_shared_mem_t * )
(
sm_module->sm_blocking_barrier_region+
j*sizeof(mca_coll_sm2_nb_request_process_shared_mem_t)+
i*sm_module->per_proc_size_of_blocking_barrier_region )
;
sm_module->ctl_blocking_barrier[j][i]->flag=0;
}
}
/* set the switch-over parameter */
sm_module->short_message_size=mca_coll_sm2_component.short_message_size;
/*
** set up process affinity information
** */
{
opal_buffer_t* sbuffer = OBJ_NEW(opal_buffer_t);
opal_buffer_t* rbuffer = OBJ_NEW(opal_buffer_t);
opal_paffinity_base_cpu_set_t my_cpu_set;
opal_list_t peers;
orte_namelist_t *peer;
int my_rank=ompi_comm_rank(comm);
uint32_t dummy;
/* use socket layout based collectives, only if explicitly discovered
** that we can */
sm_module->have_socket_information=0;
/* get the number of processors on this node */
ret=opal_paffinity_base_get_processor_info(&num_procs);
/* get process affinity mask */
OPAL_PAFFINITY_CPU_ZERO(my_cpu_set);
ret=opal_paffinity_base_get(&my_cpu_set);
if( OPAL_ERR_NOT_FOUND == ret ) {
/* pa affinity not set, so socket index will be set to -1 */
my_socket_index=-1;
} else {
my_socket_index=-1;
/* loop over number of processors */
for ( proc=0 ; proc < num_procs ; proc++ ) {
if (OPAL_PAFFINITY_CPU_ISSET(proc,my_cpu_set)) {
opal_paffinity_base_get_map_to_socket_core(i,&socket_tmp,&core);
if( (-1) == socket ){
/* socket not set yet */
my_socket_index=socket_tmp;
} else {
/* the algorithms assume that procs are local to one
** socket only */
if( my_socket_index != socket_tmp ) {
my_socket_index=-1;
break;
}
}
}
}
/* get every one elses information */
}
/* prepare list of ranks */
OBJ_CONSTRUCT(&peers, opal_list_t);
for (i = 0; i < size; i++) {
peer = OBJ_NEW(orte_namelist_t);
peer->name.jobid = comm->c_local_group->grp_proc_pointers[i]->proc_name.jobid;
peer->name.vpid = comm->c_local_group->grp_proc_pointers[i]->proc_name.vpid;
opal_list_append(&peers, &peer->item);
}
/* prepare send data */
if (NULL == sbuffer || NULL == rbuffer) {
fprintf(stderr," Can't allocte memory for sbuffer or rbuffer \n");
fflush(stderr);
return ORTE_ERR_OUT_OF_RESOURCE;
}
/* Pack my rank , I need it because allgather doesnot work as expected */
ret = opal_dss.pack(sbuffer, &my_rank, 1, OPAL_UINT32);
if (ORTE_SUCCESS != ret) {
fprintf(stderr," pack returned error %d for my_rank \n",ret);
fflush(stderr);
return ret;
}
/* Pack socket index */
ret = opal_dss.pack(sbuffer, my_socket_index, 1, OPAL_UINT32);
if (ORTE_SUCCESS != ret) {
fprintf(stderr," pack returned error %d for my_socket_index \n",ret);
fflush(stderr);
return ret;
}
/* Allgather data over the comunicator */
if (ORTE_SUCCESS != (ret = orte_grpcomm.allgather_list(&peers, sbuffer, rbuffer))) {
fprintf(stderr," orte_grpcomm.allgather_list returned error %d \n",ret);
fflush(stderr);
return ret;
}
/*
** note !!!! - not sure why this is here, but will leave if for now
*/
ret = opal_dss.unpack(rbuffer, &dummy, &cnt, ORTE_STD_CNTR);
OPAL_OUTPUT_VERBOSE((10, mca_coll_base_output,"Get dummy value %d \n", dummy));
if (ORTE_SUCCESS != ret) {
fprintf(stderr," unpack returned error %d for dummy \n",ret);
fflush(stderr);
return OMPI_ERROR;
}
sm_module->have_socket_information=1;
/* allocte memory to store socket information per process */
sm_module->socket_index=(int *)malloc(sizeof(int)*ompi_comm_size(comm));
if ( NULL == sm_module->socket_index) {
goto DONE_WITH_SOCKET_SETUP;
}
for (proc = 0; proc < ompi_comm_size(comm); proc++) {
uint32_t rem_socket_index;
uint32_t rem_rank;
/* note !!!! need to store the data for manipulation */
/* unpack rank*/
ret = opal_dss.unpack(rbuffer, &rem_rank, &cnt, OPAL_UINT32);
if (ORTE_SUCCESS != ret) {
fprintf(stderr," unpack returned error %d for rem_rank \n",ret);
fflush(stderr);
return OMPI_ERROR;
}
/* unpack socket index */
ret = opal_dss.unpack(rbuffer, &rem_socket_index, &cnt, OPAL_UINT32);
if (ORTE_SUCCESS != ret) {
fprintf(stderr," unpack returned error %d for rem_socket_index \n",ret);
fflush(stderr);
return OMPI_ERROR;
}
sm_module->socket_index[rem_rank]=rem_socket_index;
if( (-1) == rem_socket_index ) {
sm_module->have_socket_information=0;
free(sm_module->socket_index);
sm_module->socket_index=NULL;
goto DONE_WITH_SOCKET_SETUP;
}
}
/* need to generate the required data for the collective algorithms */
/* figure out how many sokcets are used */
/* allocte memory to store socket information per process */
sm_module->n_procs_per_socket=(int *)malloc(sizeof(int)*num_procs);
if ( NULL == sm_module->socket_index) {
goto DONE_WITH_SOCKET_SETUP;
}
/* initialize counters */
for (proc = 0; proc < num_procs; proc++) {
sm_module->n_procs_per_socket[proc]=0;
}
/* count how many procs are associated with a given socket */
for (proc = 0; proc < ompi_comm_size(comm); proc++) {
sm_module->n_procs_per_socket[sm_module->socket_index[proc]]++;
}
n_sockets=0;
for (proc = 0; proc < num_procs; proc++) {
if( 0 < sm_module->n_procs_per_socket[proc]) {
n_sockets++;
}
}
if( n_sockets == ompi_comm_size(comm) ) {
/* only one proc per socket - no extra level of hierarchy */
if( NULL != sm_module->socket_index ) {
free(sm_module->socket_index);
sm_module->socket_index=NULL;
}
if( NULL != sm_module->n_procs_per_socket ) {
free(sm_module->n_procs_per_socket);
sm_module->n_procs_per_socket=NULL;
}
sm_module->have_socket_information=0;
goto DONE_WITH_SOCKET_SETUP;
}
/* group procs by socket - for rooted operations want to access the
** root directly, rather than through the intermediate designated
** socket "leader" */
sm_module->sockets_in_use=(int *)malloc(sizeof(int)*n_sockets);
if ( NULL == sm_module->sockets_in_use) {
goto DONE_WITH_SOCKET_SETUP;
}
cnt=0;
for (proc = 0; proc < num_procs; proc++) {
if( 0 < sm_module->n_procs_per_socket[proc] ) {
/* this is the group I belong to */
if(sm_module->socket_index[ompi_comm_rank(comm)]==proc) {
sm_module->my_socket_group=cnt;
}
sm_module->sockets_in_use[cnt]=proc;
cnt++;
}
}
sm_module->list_of_ranks_per_socket=(int **)malloc(sizeof(int *)*n_sockets);
if ( NULL == sm_module->list_of_ranks_per_socket) {
goto DONE_WITH_SOCKET_SETUP;
}
for (j = 0; j < n_sockets; j++) {
socket=sm_module->sockets_in_use[j];
cnt=sm_module->n_procs_per_socket[socket];
sm_module->list_of_ranks_per_socket[j]=(int *)malloc(sizeof(int)*cnt);
if ( NULL == sm_module->list_of_ranks_per_socket) {
goto DONE_WITH_SOCKET_SETUP;
}
cnt=0;
for (i = 0; i < ompi_comm_size(comm); i++) {
if( socket == sm_module->socket_index[i] ) {
sm_module->list_of_ranks_per_socket[j][cnt]=i;
cnt++;
}
}
}
DONE_WITH_SOCKET_SETUP:
/* free resources */
OBJ_RELEASE(peer);
OBJ_RELEASE(sbuffer);
OBJ_RELEASE(rbuffer);
}
/* touch pages to apply memory affinity - Note: do we really need this or will
* the algorithms do this */
/* make sure all procs are done with setup - need to avoid initializing
* shared memory regions already in use
*/
ret=barrier(comm,sm_module->reduction_tree);
if( MPI_SUCCESS != ret ) {
goto CLEANUP;
}
/* return */
return &(sm_module->super);
CLEANUP:
if( NULL != sm_module->coll_sm2_file_name ) {
free(sm_module->coll_sm2_file_name);
sm_module->coll_sm2_file_name=NULL;
}
if( NULL != sm_module->reduction_tree ) {
free(sm_module->coll_sm2_file_name);
sm_module->coll_sm2_file_name=NULL;
}
if( NULL != sm_module->sm_buffer_descriptor ) {
for(i=0 ; i < group_size ; i++ ) {
if(NULL != sm_module->sm_buffer_descriptor[i].proc_memory) {
free(sm_module->sm_buffer_descriptor[i].proc_memory);
sm_module->sm_buffer_descriptor[i].proc_memory=NULL;
}
}
free(sm_module->sm_buffer_descriptor);
sm_module->sm_buffer_descriptor=NULL;
}
if(sm_module->scratch_space) {
free(sm_module->scratch_space);
sm_module->scratch_space=NULL;
}
for( i= 0 ; i < group_size ; i++ ) {
if( NULL != sm_module->ctl_blocking_barrier[0][i] ) {
free( sm_module->ctl_blocking_barrier[0][i]);
sm_module->ctl_blocking_barrier[0][i]=NULL;
}
if( NULL != sm_module->ctl_blocking_barrier[1][i] ) {
free( sm_module->ctl_blocking_barrier[1][i]);
sm_module->ctl_blocking_barrier[1][i]=NULL;
}
}
if( NULL != sm_module->ctl_blocking_barrier ) {
free(sm_module->ctl_blocking_barrier);
sm_module->ctl_blocking_barrier=NULL;
}
if( NULL != sm_module->socket_index ) {
free(sm_module->socket_index);
sm_module->socket_index=NULL;
}
if( NULL != sm_module->n_procs_per_socket ) {
free(sm_module->n_procs_per_socket);
sm_module->n_procs_per_socket=NULL;
}
if( NULL != sm_module->sockets_in_use ) {
for (j = 0; j < n_sockets; j++) {
if( NULL != sm_module->sockets_in_use[j] ) {
free(sm_module->sockets_in_use[j]);
sm_module->sockets_in_use[j]=NULL;
}
free(sm_module->sockets_in_use);
sm_module->sockets_in_use=NULL;
}
}
OBJ_RELEASE(sm_module);
return NULL;
}
/*
* Init module on the communicator
*/
static int
sm2_module_enable(mca_coll_base_module_t *module,
struct ompi_communicator_t *comm)
{
/* local variables */
char output_buffer[2*MPI_MAX_OBJECT_NAME];
memset(&output_buffer[0],0,sizeof(output_buffer));
snprintf(output_buffer,sizeof(output_buffer),"%s (cid %d)", comm->c_name,
comm->c_contextid);
opal_output_verbose(10, mca_coll_base_output,
"coll:sm2:enable: new communicator: %s", output_buffer);
/* All done */
return OMPI_SUCCESS;
}
/* progress barrier */
static
int progress_nb_barrier(mca_coll_sm2_module_t *module)
{
int rc,barrier_index;
if( module->num_nb_barriers_started !=
module->num_nb_barriers_completed ) {
/* is there anything to progress ? */
/* get index of barrier structure to progress. The one to progress
* is the one right after the last competed nb barrier. No need
* to subtract 1 for the index, as the number completed is the index
* of the next one to complete.
*/
barrier_index=(module->num_nb_barriers_completed%
module->sm2_module_num_memory_banks);
rc=mca_coll_sm2_nbbarrier_intra_progress(module->module_comm,
&(module->barrier_request[barrier_index]),
(mca_coll_base_module_t *)module);
if( OMPI_SUCCESS != rc ) {
return rc;
}
/* if barrier is completed, transition it to inactive, and point to
* the request object for then next bank
*/
if ( NB_BARRIER_DONE ==
module->barrier_request[barrier_index].sm2_barrier_phase ) {
/* set request to inactive */
module->barrier_request[barrier_index].sm2_barrier_phase=
NB_BARRIER_INACTIVE;
module->num_nb_barriers_completed++;
/* change pointer to the shared data structure to use next time */
module->barrier_request[barrier_index].sm_index^=1;
}
}
return OMPI_SUCCESS;
}
/* allocate working buffer */
sm_work_buffer_t *alloc_sm2_shared_buffer(mca_coll_sm2_module_t *module)
{
/* local variables */
int rc,buffer_index;
/* progress active barrier */
rc=progress_nb_barrier(module);
if( OMPI_SUCCESS != rc ) {
return NULL;
}
/* get next buffer index */
module->sm2_allocated_buffer_index++;
/* check for wrap-around */
if( module->sm2_allocated_buffer_index == module->sm2_module_num_buffers ) {
module->sm2_allocated_buffer_index=0;
}
/* If this is the first buffer in the bank, see if the barrier
* needs to be completed
*/
buffer_index=module->sm2_allocated_buffer_index;
if( buffer_index ==
module->sm_buffer_descriptor[buffer_index].
index_first_buffer_in_bank ) {
/* are there incomplete barriers ? */
int num_incomlete_barriers=module->num_nb_barriers_started -
module->num_nb_barriers_completed;
/* only complete the one we want to use. If there are less than
* module->sm2_module_num_memory_banks active banks, not need to
* worry about completion, as completion is ordered.
*/
while( num_incomlete_barriers == module->sm2_module_num_memory_banks ) {
rc=progress_nb_barrier(module);
if( OMPI_SUCCESS != rc ) {
return NULL;
}
num_incomlete_barriers=module->num_nb_barriers_started -
module->num_nb_barriers_completed;
}
} /* end pooling waiting to be able to use the memory bank */
return &(module->sm_buffer_descriptor[buffer_index]);
}
/* free working buffer - it is assumed that buffers are released in
* the order they are allocated. We can assume this because each
* communiator will have only one outstanding collective at a given
* time, and we ensure that operations are completed in order. */
int free_sm2_shared_buffer(mca_coll_sm2_module_t *module)
{
/* local variables */
int rc,buffer_index;
mca_coll_sm2_nb_request_process_private_mem_t *request;
/* progress active barrier */
rc=progress_nb_barrier(module);
if( OMPI_SUCCESS != rc ) {
return rc;
}
/* get next buffer index */
module->sm2_freed_buffer_index++;
/* check for wrap-around */
if( module->sm2_freed_buffer_index == module->sm2_module_num_buffers ) {
module->sm2_freed_buffer_index=0;
}
buffer_index=module->sm2_freed_buffer_index;
if( buffer_index ==
module->sm_buffer_descriptor[buffer_index].
index_last_buffer_in_bank ) {
int barrier_index=module->
sm_buffer_descriptor[buffer_index].bank_index;
/* start non-blocking barrier */
request=&(module->barrier_request[barrier_index]);
rc=mca_coll_sm2_nbbarrier_intra(module->module_comm,
request,(mca_coll_base_module_t *)module);
if( OMPI_SUCCESS !=rc ) {
return rc;
}
module->num_nb_barriers_started++;
/* the mca_coll_sm2_nbbarrier_intra never completes the barrier,
* so no need to check. This is needed for order completion.
*/
}
/* return */
return OMPI_SUCCESS;
}
OBJ_CLASS_INSTANCE(mca_coll_sm2_module_t,
mca_coll_base_module_t,
mca_coll_sm2_module_construct,
mca_coll_sm2_module_destruct);
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