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_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");
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)
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;
request->action = simcall_comm_irecv(mailbox, request->buf, &request->size, &match_recv, request);
} else {
print_request("New send", request);
-
- if (request->size < xbt_cfg_get_int(_surf_cfg_set, "smpi/async_small_thres")) { // eager mode => detached send (FIXME: this limit should be configurable)
+ if (request->size < xbt_cfg_get_int(_surf_cfg_set, "smpi/async_small_thres")) { // eager mode
mailbox = smpi_process_remote_mailbox_small(
smpi_group_index(smpi_comm_group(request->comm), request->dst));
}else{
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);
}
}
int smpi_mpi_test(MPI_Request * request, MPI_Status * status) {
-int flag;
-
- if ((*request)->action == NULL)
- flag = 1;
- else
+ int flag;
+ //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) {
+ 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;
}
int flag=0;
//FIXME find another wait to avoid busy waiting ?
// the issue here is that we have to wait on a nonexistent comm
- MPI_Request request;
while(flag==0){
- request = smpi_mpi_iprobe(source, tag, comm, &flag, status);
- XBT_DEBUG("Busy Waiting on probing : %d", flag);
- if(!flag) {
- smpi_mpi_request_free(&request);
- simcall_process_sleep(0.0001);
- }
+ smpi_mpi_iprobe(source, tag, comm, &flag, status);
+ XBT_DEBUG("Busy Waiting on probing : %d", flag);
+ if(!flag) {
+ simcall_process_sleep(0.0001);
+ }
}
}
-MPI_Request smpi_mpi_iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status){
+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;
// We have to test both mailboxes as we don't know if we will receive one one or another
if (xbt_cfg_get_int(_surf_cfg_set, "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);
}
}
}
else *flag=false;
+ smpi_mpi_request_free(&request);
- return request;
+ return;
}
void smpi_mpi_wait(MPI_Request * request, MPI_Status * status)
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[],
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;
+ //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_ENABLED) {
+ 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));
+
+ }
}
}
}
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;
+ 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)
{
smpi_mpi_startall(size - 1, requests);
for(src = 0; src < size - 1; src++) {
index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
- XBT_VERB("finished waiting any request with index %d", index);
+ XBT_DEBUG("finished waiting any request with index %d", index);
if(index == MPI_UNDEFINED) {
break;
}
