smpi_mpi_global_t smpi_mpi_global = NULL;
+/**
+ * Operations of MPI_OP : implemented=land,sum,min,max
+ **/
void smpi_mpi_land_func(void *a, void *b, int *length,
MPI_Datatype * datatype);
}
}
+/**
+ * sum two vectors element-wise
+ *
+ * @param a the first vectors
+ * @param b the second vectors
+ * @return the second vector is modified and contains the element-wise sums
+ **/
void smpi_mpi_sum_func(void *a, void *b, int *length,
MPI_Datatype * datatype);
void smpi_mpi_sum_func(void *a, void *b, int *length, MPI_Datatype * datatype)
{
- int i;
- if (*datatype == smpi_mpi_global->mpi_int) {
- int *x = a, *y = b;
- for (i = 0; i < *length; i++) {
- y[i] = x[i] + y[i];
- }
- }
+ int i;
+ if (*datatype == smpi_mpi_global->mpi_byte) {
+ char *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] + y[i];
+ }
+ } else if (*datatype == smpi_mpi_global->mpi_int) {
+ int *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] + y[i];
+ }
+ } else if (*datatype == smpi_mpi_global->mpi_float) {
+ float *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] + y[i];
+ }
+ } else if (*datatype == smpi_mpi_global->mpi_double) {
+ double *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] + y[i];
+ }
+ }
+}
+/**
+ * compute the min of two vectors element-wise
+ **/
+void smpi_mpi_min_func(void *a, void *b, int *length, MPI_Datatype * datatype);
+
+void smpi_mpi_min_func(void *a, void *b, int *length, MPI_Datatype * datatype)
+{
+ int i;
+ if (*datatype == smpi_mpi_global->mpi_byte) {
+ char *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_int) {
+ int *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_float) {
+ float *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_double) {
+ double *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+
+ }}}}
+}
+/**
+ * compute the max of two vectors element-wise
+ **/
+void smpi_mpi_max_func(void *a, void *b, int *length, MPI_Datatype * datatype);
+
+void smpi_mpi_max_func(void *a, void *b, int *length, MPI_Datatype * datatype)
+{
+ int i;
+ if (*datatype == smpi_mpi_global->mpi_byte) {
+ char *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] > y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_int) {
+ int *x = a, *y = b;
+ for (i = 0; i > *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_float) {
+ float *x = a, *y = b;
+ for (i = 0; i > *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_double) {
+ double *x = a, *y = b;
+ for (i = 0; i > *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+
+ }}}}
}
+
+
+
+/**
+ * tell the MPI rank of the calling process (from its SIMIX process id)
+ **/
int smpi_mpi_comm_rank(smpi_mpi_communicator_t comm)
{
return comm->index_to_rank_map[smpi_process_index()];
return retval;
}
+
+int smpi_mpi_waitall(int count, smpi_mpi_request_t requests[], smpi_mpi_status_t status[]) {
+ int cpt;
+ int index;
+ int retval;
+ smpi_mpi_status_t stat;
+
+ for (cpt=0; cpt<count;cpt++) {
+ retval = smpi_mpi_waitany(count,requests, &index,&stat);
+ if (retval != MPI_SUCCESS)
+ return retval;
+ memcpy(&(status[index]),&stat,sizeof(stat));
+ }
+ return MPI_SUCCESS;
+}
+
+int smpi_mpi_waitany(int count, smpi_mpi_request_t *requests, int *index, smpi_mpi_status_t *status) {
+ int cpt;
+
+ *index = MPI_UNDEFINED;
+ if (NULL == requests) {
+ return MPI_ERR_INTERN;
+ }
+ /* First check if one of them is already done */
+ for (cpt=0;cpt<count;cpt++) {
+ if (requests[cpt]->completed && !requests[cpt]->consumed) { /* got ya */
+ *index=cpt;
+ goto found_request;
+ }
+ }
+ /* If none found, block */
+ /* FIXME: should use a SIMIX_cond_waitany, when implemented. For now, block on the first one */
+ while (1) {
+ for (cpt=0;cpt<count;cpt++) {
+ if (!requests[cpt]->completed) { /* this one is not done, wait on it */
+ while (!requests[cpt]->completed)
+ SIMIX_cond_wait(requests[cpt]->cond, requests[cpt]->mutex);
+
+ *index=cpt;
+ goto found_request;
+ }
+ }
+ if (cpt == count) /* they are all done. Damn user */
+ return MPI_ERR_REQUEST;
+ }
+
+ found_request:
+ requests[*index]->consumed = 1;
+
+ if (NULL != status) {
+ status->MPI_SOURCE = requests[*index]->src;
+ status->MPI_TAG = requests[*index]->tag;
+ status->MPI_ERROR = MPI_SUCCESS;
+ }
+ return MPI_SUCCESS;
+
+}
