* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
#include "private.h"
-#include "xbt/time.h"
+#include "xbt/virtu.h"
#include "mc/mc.h"
+#include "xbt/replay.h"
+#include <errno.h>
+#include "simix/smx_private.h"
+#include "surf/surf.h"
+#include "simgrid/sg_config.h"
+
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi, "Logging specific to SMPI (base)");
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi,
- "Logging specific to SMPI (base)");
static int match_recv(void* a, void* b, smx_action_t ignored) {
MPI_Request ref = (MPI_Request)a;
MPI_Request req = (MPI_Request)b;
-
- xbt_assert(ref, "Cannot match recv against null reference");
- xbt_assert(req, "Cannot match recv against null request");
- return (ref->src == MPI_ANY_SOURCE || req->src == ref->src)
- && (ref->tag == MPI_ANY_TAG || req->tag == ref->tag);
+ XBT_DEBUG("Trying to match a recv of src %d against %d, tag %d against %d",ref->src,req->src, ref->tag, req->tag);
+
+ xbt_assert(ref, "Cannot match recv against null reference");
+ xbt_assert(req, "Cannot match recv against null request");
+ if((ref->src == MPI_ANY_SOURCE || req->src == ref->src)
+ && (ref->tag == MPI_ANY_TAG || req->tag == ref->tag)){
+ //we match, we can transfer some values
+ // FIXME : move this to the copy function ?
+ if(ref->src == MPI_ANY_SOURCE)ref->real_src = req->src;
+ if(ref->tag == MPI_ANY_TAG)ref->real_tag = req->tag;
+ if(ref->real_size < req->real_size) ref->truncated = 1;
+ if(req->detached==1){
+ ref->detached_sender=req; //tie the sender to the receiver, as it is detached and has to be freed in the receiver
+ }
+ return 1;
+ }else return 0;
}
static int match_send(void* a, void* b,smx_action_t ignored) {
MPI_Request ref = (MPI_Request)a;
MPI_Request req = (MPI_Request)b;
-
+ XBT_DEBUG("Trying to match a send of src %d against %d, tag %d against %d",ref->src,req->src, ref->tag, req->tag);
xbt_assert(ref, "Cannot match send against null reference");
xbt_assert(req, "Cannot match send against null request");
- return (req->src == MPI_ANY_SOURCE || req->src == ref->src)
- && (req->tag == MPI_ANY_TAG || req->tag == ref->tag);
+
+ if((req->src == MPI_ANY_SOURCE || req->src == ref->src)
+ && (req->tag == MPI_ANY_TAG || req->tag == ref->tag))
+ {
+ if(req->src == MPI_ANY_SOURCE)req->real_src = ref->src;
+ if(req->tag == MPI_ANY_TAG)req->real_tag = ref->tag;
+ if(req->real_size < ref->real_size) req->truncated = 1;
+ if(ref->detached==1){
+ req->detached_sender=ref; //tie the sender to the receiver, as it is detached and has to be freed in the receiver
+ }
+
+ return 1;
+ } else return 0;
}
static MPI_Request build_request(void *buf, int count,
{
MPI_Request request;
+ void *old_buf = NULL;
+
request = xbt_new(s_smpi_mpi_request_t, 1);
+
+ s_smpi_subtype_t *subtype = datatype->substruct;
+
+ if(datatype->has_subtype == 1){
+ // This part handles the problem of non-contiguous memory
+ old_buf = buf;
+ buf = xbt_malloc(count*smpi_datatype_size(datatype));
+ if (flags & SEND) {
+ subtype->serialize(old_buf, buf, count, datatype->substruct);
+ }
+ }
+
request->buf = buf;
- // FIXME: this will have to be changed to support non-contiguous datatypes
+ // This part handles the problem of non-contiguous memory (for the
+ // unserialisation at the reception)
+ request->old_buf = old_buf;
+ request->old_type = datatype;
+
request->size = smpi_datatype_size(datatype) * count;
request->src = src;
request->dst = dst;
request->comm = comm;
request->action = NULL;
request->flags = flags;
+ request->detached = 0;
+ request->detached_sender = NULL;
+
+ request->truncated = 0;
+ request->real_size = 0;
+ request->real_tag = 0;
+
+ request->refcount=1;
#ifdef HAVE_TRACING
request->send = 0;
request->recv = 0;
#endif
+ if (flags & SEND) smpi_datatype_unuse(datatype);
+
return request;
}
+
+void smpi_empty_status(MPI_Status * status) {
+ if(status != MPI_STATUS_IGNORE) {
+ status->MPI_SOURCE=MPI_ANY_SOURCE;
+ status->MPI_TAG=MPI_ANY_TAG;
+ status->count=0;
+ }
+}
+
+void smpi_action_trace_run(char *path)
+{
+ char *name;
+ xbt_dynar_t todo;
+ xbt_dict_cursor_t cursor;
+
+ action_fp=NULL;
+ if (path) {
+ action_fp = fopen(path, "r");
+ xbt_assert(action_fp != NULL, "Cannot open %s: %s", path,
+ strerror(errno));
+ }
+
+ if (!xbt_dict_is_empty(action_queues)) {
+ XBT_WARN
+ ("Not all actions got consumed. If the simulation ended successfully (without deadlock), you may want to add new processes to your deployment file.");
+
+
+ xbt_dict_foreach(action_queues, cursor, name, todo) {
+ XBT_WARN("Still %lu actions for %s", xbt_dynar_length(todo), name);
+ }
+ }
+
+ if (path)
+ fclose(action_fp);
+ xbt_dict_free(&action_queues);
+ action_queues = xbt_dict_new_homogeneous(NULL);
+}
+
static void smpi_mpi_request_free_voidp(void* request)
{
MPI_Request req = request;
int dst, int tag, MPI_Comm comm)
{
MPI_Request request =
- build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
- comm, PERSISTENT | SEND);
-
+ build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
+ comm, PERSISTENT | SEND);
+ request->refcount++;
return request;
}
int src, int tag, MPI_Comm comm)
{
MPI_Request request =
- build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
- comm, PERSISTENT | RECV);
-
+ build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
+ comm, PERSISTENT | RECV);
+ request->refcount++;
return request;
}
void smpi_mpi_start(MPI_Request request)
{
smx_rdv_t mailbox;
- int detached = 0;
xbt_assert(!request->action,
- "Cannot (re)start a non-finished communication");
+ "Cannot (re)start a non-finished communication");
if(request->flags & RECV) {
print_request("New recv", request);
- mailbox = smpi_process_mailbox();
- // FIXME: SIMIX does not yet support non-contiguous datatypes
- request->action = simcall_comm_irecv(mailbox, request->buf, &request->size, &match_recv, request);
+ if (request->size < sg_cfg_get_int("smpi/async_small_thres"))
+ mailbox = smpi_process_mailbox_small();
+ else
+ mailbox = smpi_process_mailbox();
+ // we make a copy here, as the size is modified by simix, and we may reuse the request in another receive later
+ request->real_size=request->size;
+ smpi_datatype_use(request->old_type);
+ request->action = simcall_comm_irecv(mailbox, request->buf, &request->real_size, &match_recv, request);
} else {
+
+ int receiver = smpi_group_index(smpi_comm_group(request->comm), request->dst);
+/* if(receiver == MPI_UNDEFINED) {*/
+/* XBT_WARN("Trying to send a message to a wrong rank");*/
+/* return;*/
+/* }*/
print_request("New send", request);
- mailbox = smpi_process_remote_mailbox(
- smpi_group_index(smpi_comm_group(request->comm), request->dst));
- // FIXME: SIMIX does not yet support non-contiguous datatypes
-
- if (request->size < 64*1024 ) { // eager mode => detached send (FIXME: this limit should be configurable)
- void *oldbuf = request->buf;
- detached = 1;
- request->buf = malloc(request->size);
- memcpy(request->buf,oldbuf,request->size);
- XBT_DEBUG("Send request %p is detached; buf %p copied into %p",request,oldbuf,request->buf);
- } else {
- XBT_DEBUG("Send request %p is not detached (buf: %p)",request,request->buf);
- }
- request->action =
- simcall_comm_isend(mailbox, request->size, -1.0,
- request->buf, request->size,
- &match_send,
- &smpi_mpi_request_free_voidp, // how to free the userdata if a detached send fails
- request,
- // detach if msg size < eager/rdv switch limit
- detached);
+ if (request->size < sg_cfg_get_int("smpi/async_small_thres")) { // eager mode
+ mailbox = smpi_process_remote_mailbox_small(receiver);
+ }else{
+ XBT_DEBUG("Send request %p is not in the permanent receive mailbox (buf: %p)",request,request->buf);
+ mailbox = smpi_process_remote_mailbox(receiver);
+ }
+ if (request->size < 64*1024 ) { //(FIXME: this limit should be configurable)
+ void *oldbuf = NULL;
+ request->detached = 1;
+ request->refcount++;
+ if(request->old_type->has_subtype == 0){
+ oldbuf = request->buf;
+ if (oldbuf){
+ request->buf = xbt_malloc(request->size);
+ memcpy(request->buf,oldbuf,request->size);
+ }
+ }
+ XBT_DEBUG("Send request %p is detached; buf %p copied into %p",request,oldbuf,request->buf);
+ }
+ // we make a copy here, as the size is modified by simix, and we may reuse the request in another receive later
+ request->real_size=request->size;
+ smpi_datatype_use(request->old_type);
+
+ request->action =
+ simcall_comm_isend(mailbox, request->size, -1.0,
+ request->buf, request->real_size,
+ &match_send,
+ &smpi_mpi_request_free_voidp, // how to free the userdata if a detached send fails
+ request,
+ // detach if msg size < eager/rdv switch limit
+ request->detached);
#ifdef HAVE_TRACING
/* FIXME: detached sends are not traceable (request->action == NULL) */
if (request->action)
simcall_set_category(request->action, TRACE_internal_smpi_get_category());
#endif
+
}
+
}
void smpi_mpi_startall(int count, MPI_Request * requests)
{
- int i;
+ int i;
for(i = 0; i < count; i++) {
smpi_mpi_start(requests[i]);
void smpi_mpi_request_free(MPI_Request * request)
{
- xbt_free(*request);
- *request = MPI_REQUEST_NULL;
+
+ if((*request) != MPI_REQUEST_NULL){
+ (*request)->refcount--;
+ if((*request)->refcount<0) xbt_die("wrong refcount");
+
+ if((*request)->refcount==0){
+ xbt_free(*request);
+ *request = MPI_REQUEST_NULL;
+ }
+ }else{
+ xbt_die("freeing an already free request");
+ }
}
MPI_Request smpi_isend_init(void *buf, int count, MPI_Datatype datatype,
int dst, int tag, MPI_Comm comm)
{
MPI_Request request =
- build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
- comm, NON_PERSISTENT | SEND);
+ build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
+ comm, NON_PERSISTENT | SEND);
return request;
}
int dst, int tag, MPI_Comm comm)
{
MPI_Request request =
- smpi_isend_init(buf, count, datatype, dst, tag, comm);
+ build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
+ comm, NON_PERSISTENT | SEND);
smpi_mpi_start(request);
return request;
int src, int tag, MPI_Comm comm)
{
MPI_Request request =
- build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
- comm, NON_PERSISTENT | RECV);
-
+ build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
+ comm, NON_PERSISTENT | RECV);
return request;
}
int src, int tag, MPI_Comm comm)
{
MPI_Request request =
- smpi_irecv_init(buf, count, datatype, src, tag, comm);
+ build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
+ comm, NON_PERSISTENT | RECV);
smpi_mpi_start(request);
return request;
int tag, MPI_Comm comm, MPI_Status * status)
{
MPI_Request request;
-
request = smpi_mpi_irecv(buf, count, datatype, src, tag, comm);
smpi_mpi_wait(&request, status);
}
+
+
void smpi_mpi_send(void *buf, int count, MPI_Datatype datatype, int dst,
int tag, MPI_Comm comm)
{
MPI_Request request;
-
request = smpi_mpi_isend(buf, count, datatype, dst, tag, comm);
smpi_mpi_wait(&request, MPI_STATUS_IGNORE);
+
}
void smpi_mpi_sendrecv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
MPI_Status stats[2];
requests[0] =
- smpi_isend_init(sendbuf, sendcount, sendtype, dst, sendtag, comm);
+ smpi_isend_init(sendbuf, sendcount, sendtype, dst, sendtag, comm);
requests[1] =
- smpi_irecv_init(recvbuf, recvcount, recvtype, src, recvtag, comm);
+ smpi_irecv_init(recvbuf, recvcount, recvtype, src, recvtag, comm);
smpi_mpi_startall(2, requests);
smpi_mpi_waitall(2, requests, stats);
if(status != MPI_STATUS_IGNORE) {
static void finish_wait(MPI_Request * request, MPI_Status * status)
{
MPI_Request req = *request;
+ if(!(req->detached && req->flags & SEND)){
+ if(status != MPI_STATUS_IGNORE) {
+ status->MPI_SOURCE = req->src == MPI_ANY_SOURCE ? req->real_src : req->src;
+ status->MPI_TAG = req->tag == MPI_ANY_TAG ? req->real_tag : req->tag;
+ if(req->truncated)
+ status->MPI_ERROR = MPI_ERR_TRUNCATE;
+ else status->MPI_ERROR = MPI_SUCCESS ;
+ // this handles the case were size in receive differs from size in send
+ // FIXME: really this should just contain the count of receive-type blocks,
+ // right?
+ status->count = req->real_size;
+ }
+
+ print_request("Finishing", req);
+ MPI_Datatype datatype = req->old_type;
+
+ if(datatype->has_subtype == 1){
+ // This part handles the problem of non-contignous memory
+ // the unserialization at the reception
+ s_smpi_subtype_t *subtype = datatype->substruct;
+ if(req->flags & RECV) {
+ subtype->unserialize(req->buf, req->old_buf, req->real_size/smpi_datatype_size(datatype) , datatype->substruct);
+ }
+ if(req->detached == 0) free(req->buf);
+ }
+ smpi_datatype_unuse(datatype);
+ }
+
+ if(req->detached_sender!=NULL){
+ smpi_mpi_request_free(&(req->detached_sender));
+ }
- if(status != MPI_STATUS_IGNORE) {
- status->MPI_SOURCE = req->src;
- status->MPI_TAG = req->tag;
- status->MPI_ERROR = MPI_SUCCESS;
- // FIXME: really this should just contain the count of receive-type blocks,
- // right?
- status->count = req->size;
- }
- print_request("Finishing", req);
if(req->flags & NON_PERSISTENT) {
smpi_mpi_request_free(request);
} else {
}
int smpi_mpi_test(MPI_Request * request, MPI_Status * status) {
-int flag;
+ int flag;
- if ((*request)->action == NULL)
- flag = 1;
- else
+ //assume that request is not MPI_REQUEST_NULL (filtered in PMPI_Test or smpi_mpi_testall before)
+ if ((*request)->action == NULL)
+ flag = 1;
+ else
flag = simcall_comm_test((*request)->action);
- if(flag) {
- smpi_mpi_wait(request, status);
- }
- return flag;
+ if(flag) {
+ (*request)->refcount++;
+ finish_wait(request, status);
+ }else{
+ smpi_empty_status(status);
+ }
+ return flag;
}
int smpi_mpi_testany(int count, MPI_Request requests[], int *index,
map = xbt_new(int, count);
size = 0;
for(i = 0; i < count; i++) {
- if(requests[i]->action) {
+ if((requests[i]!=MPI_REQUEST_NULL) && requests[i]->action) {
xbt_dynar_push(comms, &requests[i]->action);
map[size] = i;
size++;
}
if(size > 0) {
i = simcall_comm_testany(comms);
- // FIXME: MPI_UNDEFINED or does SIMIX have a return code?
- if(i != MPI_UNDEFINED) {
+ // not MPI_UNDEFINED, as this is a simix return code
+ if(i != -1) {
*index = map[i];
- smpi_mpi_wait(&requests[*index], status);
+ finish_wait(&requests[*index], status);
flag = 1;
}
+ }else{
+ //all requests are null or inactive, return true
+ flag=1;
+ smpi_empty_status(status);
}
xbt_free(map);
xbt_dynar_free(&comms);
}
+
+ return flag;
+}
+
+
+int smpi_mpi_testall(int count, MPI_Request requests[],
+ MPI_Status status[])
+{
+ MPI_Status stat;
+ MPI_Status *pstat = status == MPI_STATUSES_IGNORE ? MPI_STATUS_IGNORE : &stat;
+ int flag=1;
+ int i;
+ for(i=0; i<count; i++){
+ if(requests[i]!= MPI_REQUEST_NULL){
+ if (smpi_mpi_test(&requests[i], pstat)!=1){
+ flag=0;
+ }
+ }else{
+ smpi_empty_status(pstat);
+ }
+ if(status != MPI_STATUSES_IGNORE) {
+ memcpy(&status[i], pstat, sizeof(*pstat));
+ }
+ }
return flag;
}
+void smpi_mpi_probe(int source, int tag, MPI_Comm comm, MPI_Status* status){
+ int flag=0;
+ //FIXME find another wait to avoid busy waiting ?
+ // the issue here is that we have to wait on a nonexistent comm
+ while(flag==0){
+ smpi_mpi_iprobe(source, tag, comm, &flag, status);
+ XBT_DEBUG("Busy Waiting on probing : %d", flag);
+ if(!flag) {
+ simcall_process_sleep(0.0001);
+ }
+ }
+}
+
+void smpi_mpi_iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status){
+ MPI_Request request =build_request(NULL, 0, MPI_CHAR, source, smpi_comm_rank(comm), tag,
+ comm, NON_PERSISTENT | RECV);
+
+ // behave like a receive, but don't do it
+ smx_rdv_t mailbox;
+
+ print_request("New iprobe", request);
+ // We have to test both mailboxes as we don't know if we will receive one one or another
+ if (sg_cfg_get_int("smpi/async_small_thres")>0){
+ mailbox = smpi_process_mailbox_small();
+ XBT_DEBUG("trying to probe the perm recv mailbox");
+ request->action = simcall_comm_iprobe(mailbox, request->src, request->tag, &match_recv, (void*)request);
+ }
+ if (request->action==NULL){
+ mailbox = smpi_process_mailbox();
+ XBT_DEBUG("trying to probe the other mailbox");
+ request->action = simcall_comm_iprobe(mailbox, request->src, request->tag, &match_recv, (void*)request);
+ }
+
+ if(request->action){
+ MPI_Request req = (MPI_Request)SIMIX_comm_get_src_data(request->action);
+ *flag = 1;
+ if(status != MPI_STATUS_IGNORE) {
+ status->MPI_SOURCE = req->src;
+ status->MPI_TAG = req->tag;
+ status->MPI_ERROR = MPI_SUCCESS;
+ status->count = req->real_size;
+ }
+ }
+ else *flag = 0;
+ smpi_mpi_request_free(&request);
+
+ return;
+}
+
void smpi_mpi_wait(MPI_Request * request, MPI_Status * status)
{
print_request("Waiting", *request);
if ((*request)->action != NULL) { // this is not a detached send
simcall_comm_wait((*request)->action, -1.0);
- finish_wait(request, status);
}
+ finish_wait(request, status);
+
// FIXME for a detached send, finish_wait is not called:
}
comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
map = xbt_new(int, count);
size = 0;
- XBT_DEBUG("Wait for one of");
+ XBT_DEBUG("Wait for one of %d", count);
for(i = 0; i < count; i++) {
- if((requests[i] != MPI_REQUEST_NULL) && (requests[i]->action != NULL)) {
- print_request(" ", requests[i]);
- xbt_dynar_push(comms, &requests[i]->action);
- map[size] = i;
- size++;
+ if(requests[i] != MPI_REQUEST_NULL) {
+ if (requests[i]->action != NULL) {
+ XBT_DEBUG("Waiting any %p ", requests[i]);
+ xbt_dynar_push(comms, &requests[i]->action);
+ map[size] = i;
+ size++;
+ }else{
+ //This is a finished detached request, let's return this one
+ size=0;//so we free the dynar but don't do the waitany call
+ index=i;
+ finish_wait(&requests[i], status);//cleanup if refcount = 0
+ requests[i]=MPI_REQUEST_NULL;//set to null
+ break;
+ }
}
}
if(size > 0) {
i = simcall_comm_waitany(comms);
- // FIXME: MPI_UNDEFINED or does SIMIX have a return code?
- if (i != MPI_UNDEFINED) {
+
+ // not MPI_UNDEFINED, as this is a simix return code
+ if (i != -1) {
index = map[i];
finish_wait(&requests[index], status);
}
xbt_free(map);
xbt_dynar_free(&comms);
}
+
+ if (index==MPI_UNDEFINED)
+ smpi_empty_status(status);
+
return index;
}
-void smpi_mpi_waitall(int count, MPI_Request requests[],
+int smpi_mpi_waitall(int count, MPI_Request requests[],
MPI_Status status[])
{
- int index, c;
+ int index, c;
MPI_Status stat;
- MPI_Status *pstat = status == MPI_STATUS_IGNORE ? MPI_STATUS_IGNORE : &stat;
-
+ MPI_Status *pstat = status == MPI_STATUSES_IGNORE ? MPI_STATUS_IGNORE : &stat;
+ int retvalue=MPI_SUCCESS;
+ //tag invalid requests in the set
for(c = 0; c < count; c++) {
- if(MC_IS_ENABLED) {
- smpi_mpi_wait(&requests[c], pstat);
- index = c;
- } else {
- index = smpi_mpi_waitany(count, requests, pstat);
- if(index == MPI_UNDEFINED) {
- break;
+ if(requests[c]==MPI_REQUEST_NULL || requests[c]->dst == MPI_PROC_NULL ){
+ if(status != MPI_STATUSES_IGNORE)
+ smpi_empty_status(&status[c]);
+ }else if(requests[c]->src == MPI_PROC_NULL ){
+ if(status != MPI_STATUSES_IGNORE) {
+ smpi_empty_status(&status[c]);
+ status[c].MPI_SOURCE=MPI_PROC_NULL;
}
}
- if(status != MPI_STATUS_IGNORE) {
- memcpy(&status[index], pstat, sizeof(*pstat));
+ }
+ for(c = 0; c < count; c++) {
+ if(MC_is_active()) {
+ smpi_mpi_wait(&requests[c], pstat);
+ index = c;
+ } else {
+ index = smpi_mpi_waitany(count, requests, pstat);
+ if(index == MPI_UNDEFINED) {
+ break;
+ }
+ if(status != MPI_STATUSES_IGNORE) {
+ memcpy(&status[index], pstat, sizeof(*pstat));
+ if(status[index].MPI_ERROR==MPI_ERR_TRUNCATE)retvalue=MPI_ERR_IN_STATUS;
+
+ }
}
}
+
+ return retvalue;
}
int smpi_mpi_waitsome(int incount, MPI_Request requests[], int *indices,
MPI_Status status[])
{
int i, count, index;
+ MPI_Status stat;
+ MPI_Status *pstat = status == MPI_STATUSES_IGNORE ? MPI_STATUS_IGNORE : &stat;
count = 0;
- for(i = 0; i < incount; i++) {
- if(smpi_mpi_testany(incount, requests, &index, status)) {
- indices[count] = index;
- count++;
- }
+ for(i = 0; i < incount; i++)
+ {
+ index=smpi_mpi_waitany(incount, requests, pstat);
+ if(index!=MPI_UNDEFINED){
+ indices[count] = index;
+ count++;
+ if(status != MPI_STATUSES_IGNORE) {
+ memcpy(&status[index], pstat, sizeof(*pstat));
+ }
+ }else{
+ return MPI_UNDEFINED;
+ }
}
return count;
}
+int smpi_mpi_testsome(int incount, MPI_Request requests[], int *indices,
+ MPI_Status status[])
+{
+ int i, count, count_dead;
+ MPI_Status stat;
+ MPI_Status *pstat = status == MPI_STATUSES_IGNORE ? MPI_STATUS_IGNORE : &stat;
+
+ count = 0;
+ count_dead = 0;
+ for(i = 0; i < incount; i++) {
+ if((requests[i] != MPI_REQUEST_NULL)) {
+ if(smpi_mpi_test(&requests[i], pstat)) {
+ indices[count] = i;
+ count++;
+ if(status != MPI_STATUSES_IGNORE) {
+ memcpy(&status[i], pstat, sizeof(*pstat));
+ }
+ }
+ }else{
+ count_dead++;
+ }
+ }
+ if(count_dead==incount)return MPI_UNDEFINED;
+ else return count;
+}
+
void smpi_mpi_bcast(void *buf, int count, MPI_Datatype datatype, int root,
MPI_Comm comm)
{
// FIXME: check for errors
smpi_datatype_extent(recvtype, &lb, &recvext);
// Local copy from root
- smpi_datatype_copy(sendbuf, sendcount, sendtype,
- (char *)recvbuf + root * recvcount * recvext, recvcount, recvtype);
+ smpi_datatype_copy(sendbuf, sendcount, sendtype,
+ (char *)recvbuf + root * recvcount * recvext, recvcount, recvtype);
// Receive buffers from senders
requests = xbt_new(MPI_Request, size - 1);
index = 0;
for(src = 0; src < size; src++) {
if(src != root) {
- requests[index] = smpi_irecv_init((char *)recvbuf + src * recvcount * recvext,
- recvcount, recvtype,
+ requests[index] = smpi_irecv_init((char *)recvbuf + src * recvcount * recvext,
+ recvcount, recvtype,
src, system_tag, comm);
index++;
}
// FIXME: check for errors
smpi_datatype_extent(recvtype, &lb, &recvext);
// Local copy from root
- smpi_datatype_copy(sendbuf, sendcount, sendtype,
- (char *)recvbuf + displs[root] * recvext,
+ smpi_datatype_copy(sendbuf, sendcount, sendtype,
+ (char *)recvbuf + displs[root] * recvext,
recvcounts[root], recvtype);
// Receive buffers from senders
requests = xbt_new(MPI_Request, size - 1);
for(src = 0; src < size; src++) {
if(src != root) {
requests[index] =
- smpi_irecv_init((char *)recvbuf + displs[src] * recvext,
- recvcounts[src], recvtype, src, system_tag, comm);
+ smpi_irecv_init((char *)recvbuf + displs[src] * recvext,
+ recvcounts[src], recvtype, src, system_tag, comm);
index++;
}
}
// FIXME: check for errors
smpi_datatype_extent(recvtype, &lb, &recvext);
// Local copy from self
- smpi_datatype_copy(sendbuf, sendcount, sendtype,
- (char *)recvbuf + rank * recvcount * recvext, recvcount,
+ smpi_datatype_copy(sendbuf, sendcount, sendtype,
+ (char *)recvbuf + rank * recvcount * recvext, recvcount,
recvtype);
// Send/Recv buffers to/from others;
requests = xbt_new(MPI_Request, 2 * (size - 1));
for(other = 0; other < size; other++) {
if(other != rank) {
requests[index] =
- smpi_isend_init(sendbuf, sendcount, sendtype, other, system_tag,
- comm);
+ smpi_isend_init(sendbuf, sendcount, sendtype, other, system_tag,
+ comm);
index++;
- requests[index] = smpi_irecv_init((char *)recvbuf + other * recvcount * recvext,
- recvcount, recvtype, other,
+ requests[index] = smpi_irecv_init((char *)recvbuf + other * recvcount * recvext,
+ recvcount, recvtype, other,
system_tag, comm);
index++;
}
// FIXME: check for errors
smpi_datatype_extent(recvtype, &lb, &recvext);
// Local copy from self
- smpi_datatype_copy(sendbuf, sendcount, sendtype,
- (char *)recvbuf + displs[rank] * recvext,
+ smpi_datatype_copy(sendbuf, sendcount, sendtype,
+ (char *)recvbuf + displs[rank] * recvext,
recvcounts[rank], recvtype);
// Send buffers to others;
requests = xbt_new(MPI_Request, 2 * (size - 1));
for(other = 0; other < size; other++) {
if(other != rank) {
requests[index] =
- smpi_isend_init(sendbuf, sendcount, sendtype, other, system_tag,
- comm);
+ smpi_isend_init(sendbuf, sendcount, sendtype, other, system_tag,
+ comm);
index++;
requests[index] =
- smpi_irecv_init((char *)recvbuf + displs[other] * recvext, recvcounts[other],
- recvtype, other, system_tag, comm);
+ smpi_irecv_init((char *)recvbuf + displs[other] * recvext, recvcounts[other],
+ recvtype, other, system_tag, comm);
index++;
}
}
smpi_datatype_extent(sendtype, &lb, &sendext);
// Local copy from root
smpi_datatype_copy((char *)sendbuf + root * sendcount * sendext,
- sendcount, sendtype, recvbuf, recvcount, recvtype);
+ sendcount, sendtype, recvbuf, recvcount, recvtype);
// Send buffers to receivers
requests = xbt_new(MPI_Request, size - 1);
index = 0;
for(dst = 0; dst < size; dst++) {
if(dst != root) {
- requests[index] = smpi_isend_init((char *)sendbuf + dst * sendcount * sendext,
+ requests[index] = smpi_isend_init((char *)sendbuf + dst * sendcount * sendext,
sendcount, sendtype, dst,
system_tag, comm);
index++;
// FIXME: check for errors
smpi_datatype_extent(sendtype, &lb, &sendext);
// Local copy from root
- smpi_datatype_copy((char *)sendbuf + displs[root] * sendext, sendcounts[root],
+ smpi_datatype_copy((char *)sendbuf + displs[root] * sendext, sendcounts[root],
sendtype, recvbuf, recvcount, recvtype);
// Send buffers to receivers
requests = xbt_new(MPI_Request, size - 1);
for(dst = 0; dst < size; dst++) {
if(dst != root) {
requests[index] =
- smpi_isend_init((char *)sendbuf + displs[dst] * sendext, sendcounts[dst],
- sendtype, dst, system_tag, comm);
+ smpi_isend_init((char *)sendbuf + displs[dst] * sendext, sendcounts[dst],
+ sendtype, dst, system_tag, comm);
index++;
}
}
// FIXME: check for errors
smpi_datatype_extent(datatype, &lb, &dataext);
// Local copy from root
- smpi_datatype_copy(sendbuf, count, datatype, recvbuf, count, datatype);
+ if (sendbuf && recvbuf)
+ smpi_datatype_copy(sendbuf, count, datatype, recvbuf, count, datatype);
// Receive buffers from senders
//TODO: make a MPI_barrier here ?
requests = xbt_new(MPI_Request, size - 1);
// mapping...
tmpbufs[index] = xbt_malloc(count * dataext);
requests[index] =
- smpi_irecv_init(tmpbufs[index], count, datatype, src,
- system_tag, comm);
+ smpi_irecv_init(tmpbufs[index], count, datatype, src,
+ system_tag, comm);
index++;
}
}
smpi_mpi_startall(size - 1, requests);
for(src = 0; src < size - 1; src++) {
index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
+ XBT_DEBUG("finished waiting any request with index %d", index);
if(index == MPI_UNDEFINED) {
break;
}
- smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
+ if(op) /* op can be MPI_OP_NULL that does nothing */
+ smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
}
for(index = 0; index < size - 1; index++) {
xbt_free(tmpbufs[index]);
tmpbufs = xbt_new(void *, rank);
index = 0;
for(other = 0; other < rank; other++) {
- // FIXME: possibly overkill we we have contiguous/noncontiguous data
+ // FIXME: possibly overkill we we have contiguous/noncontiguous data
// mapping...
tmpbufs[index] = xbt_malloc(count * dataext);
requests[index] =
- smpi_irecv_init(tmpbufs[index], count, datatype, other, system_tag,
- comm);
+ smpi_irecv_init(tmpbufs[index], count, datatype, other, system_tag,
+ comm);
index++;
}
for(other = rank + 1; other < size; other++) {
requests[index] =
- smpi_isend_init(sendbuf, count, datatype, other, system_tag, comm);
+ smpi_isend_init(sendbuf, count, datatype, other, system_tag, comm);
index++;
}
// Wait for completion of all comms.
