smpi_mpi_request_t request = NULL;
- printf("in create-req(): MPI_ANY_SOURCE=%d,src=%d,comm->size=%d\n",MPI_ANY_SOURCE,src,comm->size);
// parameter checking prob belongs in smpi_mpi, but this is less repeat code
if (NULL == buf) {
retval = MPI_ERR_INTERN;
} else if (MPI_ANY_SOURCE != src && (0 > src || comm->size <= src)) {
retval = MPI_ERR_RANK;
} else if (0 > dst || comm->size <= dst) {
- printf("err MPI_ERR_RANK => MPI_ANY_SOURCE=%d,src=%d,dst=%d,comm->size=%d\n",MPI_ANY_SOURCE,src,dst,comm->size);
retval = MPI_ERR_RANK;
} else if (MPI_ANY_TAG != tag && 0 > tag) {
retval = MPI_ERR_TAG;
smpi_mpi_global->mpi_byte->size = (size_t) 1;
smpi_mpi_global->mpi_int = xbt_new(s_smpi_mpi_datatype_t, 1);
smpi_mpi_global->mpi_int->size = sizeof(int);
+ smpi_mpi_global->mpi_float = xbt_new(s_smpi_mpi_datatype_t, 1);
+ smpi_mpi_global->mpi_float->size = sizeof(float);
smpi_mpi_global->mpi_double = xbt_new(s_smpi_mpi_datatype_t, 1);
smpi_mpi_global->mpi_double->size = sizeof(double);
return retval;
}
+/**
+ * MPI_Wait and friends
+ **/
int SMPI_MPI_Wait(MPI_Request * request, MPI_Status * status)
{
return smpi_mpi_wait(*request, status);
return retval;
}
+void print_buffer_int( void *buf, int len, const char *msg) ;
+void print_buffer_int( void *buf, int len, const char *msg) {
+ int tmp, *v;
+ printf("**%s: ",msg);
+ for (tmp=0;tmp<len;tmp++) {
+ v = buf;
+ printf("[%d]", v[tmp] );
+ }
+ printf("\n");
+}
+
+
/**
* MPI_Reduce
**/
int size;
int i;
smpi_mpi_request_t *tabrequest;
+ smpi_mpi_request_t request;
+
smpi_bench_end();
rank = smpi_mpi_comm_rank(comm);
size = comm->size;
- tabrequest = xbt_malloc((size)*sizeof(smpi_mpi_request_t));
+ printf("-->rank %d. Entering ....\n",rank);
+ print_buffer_int( sendbuf, count, "sendbuf");
+
+ if (rank != root) { // if i am not ROOT, simply send my buffer to root
+ retval = smpi_create_request(sendbuf, count, datatype, rank, root, 0, comm, &request);
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
- if (rank != root) { // if i am not root, simply send my buffer to root
- retval = smpi_create_request(sendbuf, count, datatype,
- rank, root, 0, comm, &(tabrequest[rank]));
- smpi_mpi_isend(tabrequest[rank]);
- smpi_mpi_wait(tabrequest[rank], MPI_STATUS_IGNORE);
- //printf("DEBUG: rank %d sent my sendbuf to root (rank %d)\n",rank,root);
} else {
- // i am the root: wait for all buffers by creating requests
+ // i am the ROOT: wait for all buffers by creating one request by sender
+ tabrequest = xbt_malloc((size-1)*sizeof(smpi_mpi_request_t));
+
+ void *tmprecvbuf = xbt_malloc(count*datatype->size); // to store intermediate receptions
+ memcpy(recvbuf,sendbuf,count*datatype->size*sizeof(char)); // initiliaze recv buf with my own snd buf
+
// i can not use: 'request->forward = size-1;' (which would progagate size-1 receive reqs)
// since we should op values as soon as one receiving request matches.
- for (i=0; i<comm->size; i++) {
- if ( rank != i ) { // except for me
- // reminder: for smpi_create_request() the src is always the process sending.
- retval = smpi_create_request(recvbuf, count, datatype, MPI_ANY_SOURCE, root,
- 0, comm, &(tabrequest[i]));
- if (NULL != tabrequest[i] && MPI_SUCCESS == retval) {
- if (MPI_SUCCESS == retval) {
- smpi_mpi_irecv(tabrequest[i]);
- }
+ for (i=0; i<comm->size-1; i++) {
+ // reminder: for smpi_create_request() the src is always the process sending.
+ retval = smpi_create_request(tmprecvbuf, count, datatype, MPI_ANY_SOURCE, root,
+ 0, comm, &(tabrequest[i]));
+ if (NULL != tabrequest[i] && MPI_SUCCESS == retval) {
+ if (MPI_SUCCESS == retval) {
+ smpi_mpi_irecv(tabrequest[i]);
}
}
}
// now, wait for completion of all irecv's.
- // FIXME: we should implement smpi_wait_all for a more asynchronous behavior
- for (i=0; i<comm->size; i++) {
- if ( rank != i ) { // except for me
- smpi_mpi_wait(tabrequest[i], MPI_STATUS_IGNORE);
-
- // FIXME: the core part is here. To be written ...
-
- fprintf(stderr,"[smpi] %s:%d : MPI_Reduce *Not yet implemented*.\n",__FILE__,__LINE__);
- }
+ for (i=0; i<comm->size-1; i++) {
+ int index = MPI_UNDEFINED;
+ smpi_mpi_waitany(comm->size-1, tabrequest, &index, MPI_STATUS_IGNORE);
+
+ print_buffer_int( recvbuf, count, "rcvbuf");
+ printf("MPI_Waitany() unblocked: root received (completes req[%d]): ",index);
+ print_buffer_int( tmprecvbuf, count, "tmprecvbuf");
+
+ // arg 2 is modified
+ op->func (tmprecvbuf,recvbuf,&count,&datatype);
+ print_buffer_int( recvbuf, count, "recvbuf after func");
+ //fprintf(stderr,"[smpi] %s:%d : MPI_Reduce *Not yet implemented*.\n",__FILE__,__LINE__);
+ xbt_mallocator_release(smpi_global->request_mallocator, tabrequest[i]);
}
-
+ xbt_free(tabrequest);
}
- for (i=0; i<comm->size; i++)
- xbt_mallocator_release(smpi_global->request_mallocator, tabrequest[i]);
smpi_bench_begin();
int smpi_compare_rankkeys(const void *a, const void *b);
int smpi_compare_rankkeys(const void *a, const void *b)
{
- int *x = (int *) a;
- int *y = (int *) b;
+ int *x = (int *) a;
+ int *y = (int *) b;
if (x[1] < y[1])
return -1;