+/* $Id$tag */
+
+/* smpi_mpi.c --
+ *
+ * Eventually will contain the user level MPI primitives and its corresponding
+ * internal wrapper. The implementations of these primitives should go to specific
+ * files. For example, a SMPI_MPI_Bcast() in this file, should call the wrapper
+ * smpi_mpi_bcast(), which decides which implementation to call. Currently, it
+ * calls nary_tree_bcast() in smpi_coll.c. (Stéphane Genaud).
+ * */
+
#include "private.h"
#include "smpi_coll_private.h"
+#include "smpi_mpi_dt_private.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_mpi, smpi,
"Logging specific to SMPI (mpi)");
return retval;
}
-int SMPI_MPI_Type_size(MPI_Datatype datatype, size_t * size)
-{
- int retval = MPI_SUCCESS;
-
- smpi_bench_end();
-
- if (NULL == datatype) {
- retval = MPI_ERR_TYPE;
- } else if (NULL == size) {
- retval = MPI_ERR_ARG;
- } else {
- *size = datatype->size;
- }
-
- smpi_bench_begin();
- return retval;
-}
+/**
+ * Barrier
+ **/
int SMPI_MPI_Barrier(MPI_Comm comm)
{
int retval = MPI_SUCCESS;
return retval;
}
+
+
int SMPI_MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src,
int tag, MPI_Comm comm, MPI_Request * request)
{
int retval = MPI_SUCCESS;
+ int rank;
smpi_bench_end();
-
- retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm,
+ rank = smpi_mpi_comm_rank(comm);
+ retval = smpi_create_request(buf, count, datatype, src, rank, tag, comm,
request);
if (NULL != *request && MPI_SUCCESS == retval) {
retval = smpi_mpi_irecv(*request);
int tag, MPI_Comm comm, MPI_Status * status)
{
int retval = MPI_SUCCESS;
+ int rank;
smpi_mpi_request_t request;
smpi_bench_end();
- retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm,
+ rank = smpi_mpi_comm_rank(comm);
+ retval = smpi_create_request(buf, count, datatype, src, rank, tag, comm,
&request);
if (NULL != request && MPI_SUCCESS == retval) {
retval = smpi_mpi_irecv(request);
int tag, MPI_Comm comm, MPI_Request * request)
{
int retval = MPI_SUCCESS;
+ int rank;
smpi_bench_end();
- retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm,
+ rank = smpi_mpi_comm_rank(comm);
+ retval = smpi_create_request(buf, count, datatype, rank, dst, tag, comm,
request);
if (NULL != *request && MPI_SUCCESS == retval) {
retval = smpi_mpi_isend(*request);
return retval;
}
+/**
+ * MPI_Send user level
+ **/
int SMPI_MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst,
int tag, MPI_Comm comm)
{
int retval = MPI_SUCCESS;
+ int rank;
smpi_mpi_request_t request;
smpi_bench_end();
- retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm,
+ rank = smpi_mpi_comm_rank(comm);
+ retval = smpi_create_request(buf, count, datatype, rank, dst, tag, comm,
&request);
if (NULL != request && MPI_SUCCESS == retval) {
retval = smpi_mpi_isend(request);
**/
int SMPI_MPI_Wait(MPI_Request * request, MPI_Status * status)
{
- return smpi_mpi_wait(*request, status);
+ int retval;
+
+ smpi_bench_end();
+ retval = smpi_mpi_wait(*request, status);
+ smpi_bench_begin();
+ return retval;
}
int SMPI_MPI_Waitall(int count, MPI_Request requests[], MPI_Status status[])
{
- return smpi_mpi_waitall(count, requests, status);
+ int retval;
+
+ smpi_bench_end();
+ retval = smpi_mpi_waitall(count, requests, status);
+ smpi_bench_begin();
+ return retval;
}
int SMPI_MPI_Waitany(int count, MPI_Request requests[], int *index,
MPI_Status status[])
{
- return smpi_mpi_waitany(count, requests, index, status);
+ int retval;
+
+ smpi_bench_end();
+ retval = smpi_mpi_waitany(count, requests, index, status);
+ smpi_bench_begin();
+ return retval;
}
/**
MPI_Comm comm)
{
int retval = MPI_SUCCESS;
+ int rank = smpi_mpi_comm_rank(comm);
+
+ DEBUG1("<%d> entered smpi_mpi_bcast(). Calls nary_tree_bcast()",rank);
//retval = flat_tree_bcast(buf, count, datatype, root, comm);
retval = nary_tree_bcast(buf, count, datatype, root, comm, 2 );
return retval;
int rank;
int size;
int i;
- int tag = 0;
+ int system_tag = 666;
smpi_mpi_request_t *requests;
smpi_mpi_request_t request;
rank = smpi_mpi_comm_rank(comm);
size = comm->size;
+ DEBUG1("<%d> entered smpi_mpi_reduce()",rank);
if (rank != root) { // if i am not ROOT, simply send my buffer to root
#ifdef DEBUG_REDUCE
print_buffer_int(sendbuf, count, xbt_strdup("sndbuf"), rank);
#endif
- retval = smpi_create_request(sendbuf, count, datatype, rank, root, tag, comm,
+ retval = smpi_create_request(sendbuf, count, datatype, rank, root, system_tag, comm,
&request);
smpi_mpi_isend(request);
smpi_mpi_wait(request, MPI_STATUS_IGNORE);
// reminder: for smpi_create_request() the src is always the process sending.
src = i < root ? i : i + 1;
retval = smpi_create_request(tmpbufs[i], count, datatype,
- src, root, tag, comm, &(requests[i]));
+ src, root, system_tag, comm, &(requests[i]));
if (NULL != requests[i] && MPI_SUCCESS == retval) {
if (MPI_SUCCESS == retval) {
smpi_mpi_irecv(requests[i]);
for (i = 0; i < size-1; i++) {
int index = MPI_UNDEFINED;
smpi_mpi_waitany( size-1, requests, &index, MPI_STATUS_IGNORE);
+ DEBUG3("<%d> waitany() unblocked by reception (completes request[%d]) (%d reqs remaining)",
+ rank,index,size-i-2);
#ifdef DEBUG_REDUCE
- printf ("MPI_Waitany() unblocked: root received (completes req[index=%d])\n",index);
print_buffer_int(tmpbufs[index], count, bprintf("tmpbufs[index=%d] (value received)", index),
rank);
#endif
xbt_free(tmpbufs[index]);
/* FIXME: with the following line, it generates an
* [xbt_ex/CRITICAL] Conditional list not empty 162518800.
+ * Fixed ?
*/
- // xbt_mallocator_release(smpi_global->request_mallocator, requests[index]);
+ xbt_mallocator_release(smpi_global->request_mallocator, requests[index]);
}
xbt_free(requests);
xbt_free(tmpbufs);
/**
* MPI_Allreduce
*
- * Same as MPI_REDUCE except that the result appears in the receive buffer of all the group members.
+ * Same as MPI_Reduce except that the result appears in the receive buffer of all the group members.
**/
int SMPI_MPI_Allreduce( void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype,
MPI_Op op, MPI_Comm comm )
* ompi/mca/coll/tuned/coll_tuned_module.c
**/
int SMPI_MPI_Alltoall(void *sendbuf, int sendcount, MPI_Datatype datatype,
- void *recvbuf, int recvcount, MPI_Datatype recvtype,
- MPI_Comm comm)
+ void *recvbuf, int recvcount, MPI_Datatype recvtype,
+ MPI_Comm comm)
{
int retval = MPI_SUCCESS;
int block_dsize;
rank = smpi_mpi_comm_rank(comm);
block_dsize = datatype->size * sendcount;
+ DEBUG2("<%d> optimized alltoall() called. Block size sent to each rank: %d bytes.",rank,block_dsize);
if ((block_dsize < 200) && (comm->size > 12)) {
retval = smpi_coll_tuned_alltoall_bruck(sendbuf, sendcount, datatype,
recvbuf, recvcount, recvtype, comm);
} else if (block_dsize < 3000) {
-/* use this one !! retval = smpi_coll_tuned_alltoall_basic_linear(sendbuf, sendcount, datatype,
- recvbuf, recvcount, recvtype, comm);
- */
- retval = smpi_coll_tuned_alltoall_pairwise(sendbuf, sendcount, datatype,
+ retval = smpi_coll_tuned_alltoall_basic_linear(sendbuf, sendcount, datatype,
recvbuf, recvcount, recvtype, comm);
} else {
return retval;
}
+/**
+ * MPI_Alltoallv user entry point
+ *
+ * As in OpenMPI, alltoallv is not optimized
+ * ompi/mca/coll/basic/coll_basic_alltoallv.c
+ **/
+int SMPI_MPI_Alltoallv(void *sendbuf, int *scounts, int *sdisps, MPI_Datatype datatype,
+ void *recvbuf, int *rcounts, int *rdisps, MPI_Datatype recvtype,
+ MPI_Comm comm)
+{
+ int retval = MPI_SUCCESS;
+ int rank;
+
+ smpi_bench_end();
+ rank = smpi_mpi_comm_rank(comm);
+ DEBUG1("<%d> basic alltoallv() called.",rank);
+
+ retval = smpi_coll_basic_alltoallv(sendbuf, scounts, sdisps, datatype,
+ recvbuf, rcounts, rdisps, recvtype,
+ comm);
+ smpi_bench_begin();
+ return retval;
+}
+
double SMPI_MPI_Wtime(void)
{
- return (SIMIX_get_clock());
+ double time;
+
+ smpi_bench_end();
+ time = SIMIX_get_clock();
+ smpi_bench_begin();
+ return time;
+}
+
+int SMPI_MPI_Gather(void* sendbuf, int sendcount, MPI_Datatype sendtype,
+ void* recvbuf, int recvcount, MPI_Datatype recvtype,
+ int root, MPI_Comm comm)
+{
+ int retval = MPI_SUCCESS;
+ int system_tag = 666;
+ int rank, size;
+
+ smpi_bench_end();
+ rank = smpi_mpi_comm_rank(comm);
+ size = comm->size;
+ if(rank != root) {
+ // Send buffer to root
+ smpi_mpi_request_t request;
+
+ retval = smpi_create_request(sendbuf, sendcount, sendtype,
+ rank, root, system_tag, comm, &request);
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ } else {
+ // Receive buffers from senders
+ int src;
+ smpi_mpi_request_t* requests;
+
+ requests = xbt_malloc((size-1) * sizeof(smpi_mpi_request_t));
+ for(src = 0; src < size; src++) {
+ if(src == root) {
+ // Local copy from root
+ memcpy(&((char*)recvbuf)[src*recvcount*recvtype->size],
+ sendbuf, sendcount*sendtype->size*sizeof(char));
+ } else {
+ int index = src < root ? src : src - 1;
+ retval = smpi_create_request(&((char*)recvbuf)[src*recvcount*recvtype->size],
+ recvcount, recvtype, src, root, system_tag,
+ comm, &requests[index]);
+ if(NULL != requests[index] && MPI_SUCCESS == retval) {
+ smpi_mpi_irecv(requests[index]);
+ }
+ }
+ }
+ // Wait for completion of irecv's.
+ for(src = 0; src < size - 1; src++) {
+ int index = MPI_UNDEFINED;
+ smpi_mpi_waitany(size - 1, requests, &index, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, requests[index]);
+ }
+ xbt_free(requests);
+ }
+ smpi_bench_begin();
+ return retval;
+}
+
+int SMPI_MPI_Gatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype,
+ void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype,
+ int root, MPI_Comm comm)
+{
+ int retval = MPI_SUCCESS;
+ int system_tag = 666;
+ int rank, size;
+
+ smpi_bench_end();
+ rank = smpi_mpi_comm_rank(comm);
+ size = comm->size;
+ if(rank != root) {
+ // Send buffer to root
+ smpi_mpi_request_t request;
+
+ retval = smpi_create_request(sendbuf, sendcount, sendtype,
+ rank, root, system_tag, comm, &request);
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ } else {
+ // Receive buffers from senders
+ int src;
+ smpi_mpi_request_t* requests;
+
+ requests = xbt_malloc((size-1) * sizeof(smpi_mpi_request_t));
+ for(src = 0; src < size; src++) {
+ if(src == root) {
+ // Local copy from root
+ memcpy(&((char*)recvbuf)[displs[src]],
+ sendbuf, sendcount*sendtype->size*sizeof(char));
+ } else {
+ int index = src < root ? src : src - 1;
+ retval = smpi_create_request(&((char*)recvbuf)[displs[src]],
+ recvcounts[src], recvtype, src, root, system_tag,
+ comm, &requests[index]);
+ if(NULL != requests[index] && MPI_SUCCESS == retval) {
+ smpi_mpi_irecv(requests[index]);
+ }
+ }
+ }
+ // Wait for completion of irecv's.
+ for(src = 0; src < size - 1; src++) {
+ int index = MPI_UNDEFINED;
+ smpi_mpi_waitany(size - 1, requests, &index, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, requests[index]);
+ }
+ xbt_free(requests);
+ }
+ smpi_bench_begin();
+ return retval;
}
+int SMPI_MPI_Scatterv(void* sendbuf, int *sendcounts, int *displs, MPI_Datatype sendtype,
+ void* recvbuf, int recvcount, MPI_Datatype recvtype,
+ int root, MPI_Comm comm)
+{
+ int retval = MPI_SUCCESS;
+ int system_tag = 666;
+ int rank, size;
+ smpi_bench_end();
+ rank = smpi_mpi_comm_rank(comm);
+ size = comm->size;
+ if(rank != root) {
+ // Receive buffer from root
+ smpi_mpi_request_t request;
+
+ retval = smpi_create_request(recvbuf, recvcount, recvtype,
+ root, rank, system_tag, comm, &request);
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ } else {
+ // Send buffers to receivers
+ int dst;
+ smpi_mpi_request_t* requests;
+
+ requests = xbt_malloc((size-1) * sizeof(smpi_mpi_request_t));
+ for(dst = 0; dst < size; dst++) {
+ if(dst == root) {
+ // Local copy from root
+ memcpy(recvbuf, &((char*)sendbuf)[displs[dst]],
+ sendcounts[dst]*sendtype->size*sizeof(char));
+ } else {
+ int index = dst < root ? dst : dst - 1;
+ retval = smpi_create_request(&((char*)sendbuf)[displs[dst]], sendcounts[dst], sendtype,
+ root, dst, system_tag, comm, &requests[index]);
+ if(NULL != requests[index] && MPI_SUCCESS == retval) {
+ smpi_mpi_isend(requests[index]);
+ }
+ }
+ }
+ // Wait for completion of isend's.
+ for(dst = 0; dst < size - 1; dst++) {
+ int index = MPI_UNDEFINED;
+ smpi_mpi_waitany(size - 1, requests, &index, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, requests[index]);
+ }
+ xbt_free(requests);
+ }
+ smpi_bench_begin();
+ return retval;
+}
+
+int SMPI_MPI_Reduce_scatter(void* sendbuf, void* recvbuf, int *recvcounts,
+ MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
+{
+ // FIXME: Suboptimal implementation
+ int retval = MPI_SUCCESS;
+ int count = 0;
+ int root = 0;
+ int i, rank;
+ int* displs;
+
+ smpi_bench_end();
+ rank = smpi_mpi_comm_rank(comm);
+ displs = xbt_new(int, comm->size);
+ for(i = 0; i < comm->size; i++) {
+ count += recvcounts[i];
+ displs[i] = 0;
+ }
+ retval = smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, root, comm);
+ retval = SMPI_MPI_Scatterv(recvbuf, recvcounts, displs, datatype, recvbuf, recvcounts[rank], datatype, root, comm);
+ xbt_free(displs);
+ smpi_bench_begin();
+ return retval;
+}
+
+int SMPI_MPI_Allgather(void* sendbuf, int sendcount, MPI_Datatype sendtype,
+ void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm)
+{
+ // FIXME: Suboptimal implementation
+ int root = 0;
+ int retval;
+
+ smpi_bench_end();
+ retval = SMPI_MPI_Gather(sendbuf, sendcount, sendtype,
+ recvbuf, recvcount, recvtype, root, comm);
+ if(retval == MPI_SUCCESS) {
+ retval = SMPI_MPI_Bcast(recvbuf, recvcount, recvtype, root, comm);
+ }
+ smpi_bench_begin();
+ return retval;
+}
+
+int SMPI_MPI_Allgatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype,
+ void* recvbuf, int *recvcounts, int *displs, MPI_Datatype recvtype,
+ MPI_Comm comm)
+{
+ // FIXME: Suboptimal implementation
+ int root = 0;
+ int last, retval;
+
+ smpi_bench_end();
+ retval = SMPI_MPI_Gatherv(sendbuf, sendcount, sendtype,
+ recvbuf, recvcounts, displs, recvtype, root, comm);
+ if(retval == MPI_SUCCESS) {
+ last = comm->size - 1;
+ retval = SMPI_MPI_Bcast(recvbuf, displs[last] + recvcounts[last], recvtype, root, comm);
+ }
+ smpi_bench_begin();
+ return retval;
+}