X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/abacf1fc86b15392727e4fedb38da442167fd51d..5f758ee0ce7c9908ead65c3b6eb4229e55ee8a27:/src/smpi/smpi_base.c

diff --git a/src/smpi/smpi_base.c b/src/smpi/smpi_base.c
index 1d619ba9de..1392ec61a4 100644
--- a/src/smpi/smpi_base.c
+++ b/src/smpi/smpi_base.c
@@ -13,6 +13,9 @@ XBT_LOG_EXTERNAL_CATEGORY(smpi_util);
 
 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);
 
@@ -28,20 +31,116 @@ void smpi_mpi_land_func(void *a, void *b, int *length,
   }
 }
 
+/**
+ * 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()];
@@ -177,3 +276,60 @@ int smpi_mpi_wait(smpi_mpi_request_t request, smpi_mpi_status_t * status)
 
   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;
+
+}