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()];