#include "private.h"
-int MPI_Init(int *argc, char ***argv)
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_mpi, smpi,
+ "Logging specific to SMPI (mpi)");
+
+int SMPI_MPI_Init(int *argc, char ***argv)
{
- smpi_mpi_init();
- smpi_bench_begin();
- return MPI_SUCCESS;
+ smpi_process_init(argc,argv);
+ smpi_bench_begin();
+ return MPI_SUCCESS;
}
-int MPI_Finalize()
+int SMPI_MPI_Finalize()
{
- smpi_bench_end();
- smpi_mpi_finalize();
- return MPI_SUCCESS;
+ smpi_bench_end();
+ smpi_process_finalize();
+ return MPI_SUCCESS;
}
// right now this just exits the current node, should send abort signal to all
-// hosts in the communicator;
-int MPI_Abort(MPI_Comm comm, int errorcode)
+// hosts in the communicator (TODO)
+int SMPI_MPI_Abort(MPI_Comm comm, int errorcode)
+{
+ smpi_exit(errorcode);
+ return 0;
+}
+
+int SMPI_MPI_Comm_size(MPI_Comm comm, int *size)
+{
+ int retval = MPI_SUCCESS;
+
+ smpi_bench_end();
+
+ if (NULL == comm) {
+ retval = MPI_ERR_COMM;
+ } else if (NULL == size) {
+ retval = MPI_ERR_ARG;
+ } else {
+ *size = comm->size;
+ }
+
+ smpi_bench_begin();
+
+ return retval;
+}
+
+int SMPI_MPI_Comm_rank(MPI_Comm comm, int *rank)
+{
+ int retval = MPI_SUCCESS;
+
+ smpi_bench_end();
+
+ if (NULL == comm) {
+ retval = MPI_ERR_COMM;
+ } else if (NULL == rank) {
+ retval = MPI_ERR_ARG;
+ } else {
+ *rank = smpi_mpi_comm_rank(comm);
+ }
+
+ smpi_bench_begin();
+
+ return retval;
+}
+
+int SMPI_MPI_Type_size(MPI_Datatype datatype, size_t * size)
{
- smpi_exit(errorcode);
+ 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;
+ }
- return 0;
+ smpi_bench_begin();
+
+ return retval;
}
-int MPI_Comm_size(MPI_Comm comm, int *size)
+int SMPI_MPI_Barrier(MPI_Comm comm)
{
- int retval = MPI_SUCCESS;
+ int retval = MPI_SUCCESS;
- smpi_bench_end();
+ smpi_bench_end();
- if (NULL == comm) {
- retval = MPI_ERR_COMM;
- } else if (NULL == size) {
- retval = MPI_ERR_ARG;
- } else {
- *size = comm->size;
- }
+ if (NULL == comm) {
+ retval = MPI_ERR_COMM;
+ } else {
+ retval = smpi_mpi_barrier(comm);
+ }
- smpi_bench_begin();
+ smpi_bench_begin();
- return retval;
+ return retval;
}
-int MPI_Comm_rank(MPI_Comm comm, int *rank)
+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 retval = MPI_SUCCESS;
- smpi_bench_end();
+ smpi_bench_end();
- if (NULL == comm) {
- retval = MPI_ERR_COMM;
- } else if (NULL == rank) {
- retval = MPI_ERR_ARG;
- } else {
- *rank = smpi_mpi_comm_rank(comm, SIMIX_host_self());
- }
+ retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm,
+ request);
+ if (NULL != *request && MPI_SUCCESS == retval) {
+ retval = smpi_mpi_irecv(*request);
+ }
- smpi_bench_begin();
+ smpi_bench_begin();
- return retval;
+ return retval;
}
-int MPI_Type_size(MPI_Datatype datatype, size_t *size)
+int SMPI_MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src,
+ int tag, MPI_Comm comm, MPI_Status * status)
{
- int retval = MPI_SUCCESS;
+ int retval = MPI_SUCCESS;
+ smpi_mpi_request_t request;
- smpi_bench_end();
+ smpi_bench_end();
- if (NULL == datatype) {
- retval = MPI_ERR_TYPE;
- } else if (NULL == size) {
- retval = MPI_ERR_ARG;
- } else {
- *size = datatype->size;
- }
+ retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm,
+ &request);
+ if (NULL != request && MPI_SUCCESS == retval) {
+ retval = smpi_mpi_irecv(request);
+ if (MPI_SUCCESS == retval) {
+ retval = smpi_mpi_wait(request, status);
+ }
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ }
- smpi_bench_begin();
+ smpi_bench_begin();
- return retval;
+ return retval;
}
-// FIXME: check comm value and barrier success...
-int MPI_Barrier(MPI_Comm comm)
+int SMPI_MPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst,
+ int tag, MPI_Comm comm, MPI_Request * request)
{
- smpi_bench_end();
- smpi_barrier(comm);
- smpi_bench_begin();
- return MPI_SUCCESS;
+ int retval = MPI_SUCCESS;
+
+ smpi_bench_end();
+
+ retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm,
+ request);
+ if (NULL != *request && MPI_SUCCESS == retval) {
+ retval = smpi_mpi_isend(*request);
+ }
+
+ smpi_bench_begin();
+
+ return retval;
}
-int MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Request *request)
+int SMPI_MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst,
+ int tag, MPI_Comm comm)
{
- int retval = MPI_SUCCESS;
- int dst;
- smpi_bench_end();
- dst = smpi_mpi_comm_rank_self(comm);
- retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, request);
- if (NULL != *request && MPI_SUCCESS == retval) {
- retval = smpi_irecv(*request);
- }
- smpi_bench_begin();
- return retval;
+ int retval = MPI_SUCCESS;
+ smpi_mpi_request_t request;
+
+ smpi_bench_end();
+
+ retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm,
+ &request);
+ if (NULL != request && MPI_SUCCESS == retval) {
+ retval = smpi_mpi_isend(request);
+ if (MPI_SUCCESS == retval) {
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ }
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ }
+
+ smpi_bench_begin();
+
+ return retval;
}
-int MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status)
+/**
+ * MPI_Wait and friends
+ **/
+int SMPI_MPI_Wait(MPI_Request * request, MPI_Status * status)
{
- int retval = MPI_SUCCESS;
- int dst;
- smpi_mpi_request_t request;
- int rank;
- smpi_bench_end();
- dst = smpi_mpi_comm_rank_self(comm);
- retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, &request);
- if (NULL != request && MPI_SUCCESS == retval) {
- retval = smpi_irecv(request);
- if (MPI_SUCCESS == retval) {
- retval = smpi_wait(request, status);
- }
- rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
- xbt_mallocator_release(smpi_global->request_mallocator, request);
- }
- smpi_bench_begin();
- return retval;
+ return smpi_mpi_wait(*request, status);
}
-int MPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm, MPI_Request *request)
+int SMPI_MPI_Waitall(int count, MPI_Request requests[], MPI_Status status[]) {
+ return smpi_mpi_waitall(count, requests,status);
+}
+int SMPI_MPI_Waitany(int count, MPI_Request requests[], int *index, MPI_Status status[]) {
+ return smpi_mpi_waitany(count, requests, index,status);
+}
+/**
+ * MPI_Bcast
+ **/
+int SMPI_MPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root,
+ MPI_Comm comm)
{
- int retval = MPI_SUCCESS;
- int src;
- smpi_bench_end();
- src = smpi_mpi_comm_rank_self(comm);
- retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, request);
- if (NULL != *request && MPI_SUCCESS == retval) {
- retval = smpi_isend(*request);
- }
- smpi_bench_begin();
- return retval;
+
+ int retval = MPI_SUCCESS;
+ int rank;
+ smpi_mpi_request_t request;
+
+ smpi_bench_end();
+
+ rank = smpi_mpi_comm_rank(comm);
+
+ if (rank == root) {
+ retval = smpi_create_request(buf, count, datatype, root,
+ (root + 1) % comm->size, 0, comm, &request);
+ request->forward = comm->size - 1;
+ smpi_mpi_isend(request);
+ } else {
+ retval = smpi_create_request(buf, count, datatype, MPI_ANY_SOURCE, rank,
+ 0, comm, &request);
+ smpi_mpi_irecv(request);
+ }
+
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+
+ smpi_bench_begin();
+
+ return retval;
+}
+
+/**
+ * debugging helper function
+ **/
+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 SMPI_MPI_Reduce( void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype,
+ MPI_Op op, int root, MPI_Comm comm )
+{
+ int retval = MPI_SUCCESS;
+ int rank;
+ int size;
+ int i;
+ int tag=0;
+ smpi_mpi_request_t *tabrequest;
+ smpi_mpi_request_t request;
+
+
+ smpi_bench_end();
+
+ rank = smpi_mpi_comm_rank(comm);
+ size = comm->size;
+
+ //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, tag , comm, &request);
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+
+ } else {
+ // 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 **tmpbufs = xbt_malloc((size-1)*sizeof(void *));
+ for (i=0; i<size-1; i++) {
+ // we need 1 buffer per request to store intermediate receptions
+ tmpbufs[i] = xbt_malloc(count*datatype->size);
+ }
+ 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-1; i++) {
+ // reminder: for smpi_create_request() the src is always the process sending.
+ retval = smpi_create_request(tmpbufs[i], count, datatype,
+ MPI_ANY_SOURCE, root,
+ tag, 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.
+ 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[index=%d]): ",index);
+ //print_buffer_int( tmpbufs[index], count, "tmpbufs[index]");
+
+ // arg 2 is modified
+ op->func (tmpbufs[index],recvbuf,&count,&datatype);
+
+ // print_buffer_int( recvbuf, count, "recvbuf after func");
+ //xbt_mallocator_release(smpi_global->request_mallocator, tabrequest[i]);
+ //xbt_free( tmpbufs[index]);
+ }
+ xbt_free(tabrequest);
+ xbt_free(tmpbufs);
+ }
+
+ smpi_bench_begin();
+
+ return retval;
+}
+
+// used by comm_split to sort ranks based on key values
+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;
+
+ if (x[1] < y[1])
+ return -1;
+
+ if (x[1] == y[1]) {
+ if (x[0] < y[0])
+ return -1;
+ if (x[0] == y[0])
+ return 0;
+ return 1;
+ }
+
+ return 1;
+}
+
+int SMPI_MPI_Comm_split(MPI_Comm comm, int color, int key,
+ MPI_Comm * comm_out)
+{
+ int retval = MPI_SUCCESS;
+
+ int index, rank;
+ smpi_mpi_request_t request;
+ int colorkey[2];
+ smpi_mpi_status_t status;
+
+ smpi_bench_end();
+
+ // FIXME: need to test parameters
+
+ index = smpi_process_index();
+ rank = comm->index_to_rank_map[index];
+
+ // default output
+ comm_out = NULL;
+
+ // root node does most of the real work
+ if (0 == rank) {
+ int colormap[comm->size];
+ int keymap[comm->size];
+ int rankkeymap[comm->size * 2];
+ int i, j;
+ smpi_mpi_communicator_t tempcomm = NULL;
+ int count;
+ int indextmp;
+
+ colormap[0] = color;
+ keymap[0] = key;
+
+ // FIXME: use scatter/gather or similar instead of individual comms
+ for (i = 1; i < comm->size; i++) {
+ retval = smpi_create_request(colorkey, 2, MPI_INT, MPI_ANY_SOURCE,
+ rank, MPI_ANY_TAG, comm, &request);
+ smpi_mpi_irecv(request);
+ smpi_mpi_wait(request, &status);
+ colormap[status.MPI_SOURCE] = colorkey[0];
+ keymap[status.MPI_SOURCE] = colorkey[1];
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ }
+
+ for (i = 0; i < comm->size; i++) {
+ if (MPI_UNDEFINED == colormap[i]) {
+ continue;
+ }
+ // make a list of nodes with current color and sort by keys
+ count = 0;
+ for (j = i; j < comm->size; j++) {
+ if (colormap[i] == colormap[j]) {
+ colormap[j] = MPI_UNDEFINED;
+ rankkeymap[count * 2] = j;
+ rankkeymap[count * 2 + 1] = keymap[j];
+ count++;
+ }
+ }
+ qsort(rankkeymap, count, sizeof(int) * 2, &smpi_compare_rankkeys);
+
+ // new communicator
+ tempcomm = xbt_new(s_smpi_mpi_communicator_t, 1);
+ tempcomm->barrier_count = 0;
+ tempcomm->size = count;
+ tempcomm->barrier_mutex = SIMIX_mutex_init();
+ tempcomm->barrier_cond = SIMIX_cond_init();
+ tempcomm->rank_to_index_map = xbt_new(int, count);
+ tempcomm->index_to_rank_map = xbt_new(int, smpi_global->process_count);
+ for (j = 0; j < smpi_global->process_count; j++) {
+ tempcomm->index_to_rank_map[j] = -1;
+ }
+ for (j = 0; j < count; j++) {
+ indextmp = comm->rank_to_index_map[rankkeymap[j * 2]];
+ tempcomm->rank_to_index_map[j] = indextmp;
+ tempcomm->index_to_rank_map[indextmp] = j;
+ }
+ for (j = 0; j < count; j++) {
+ if (rankkeymap[j * 2]) {
+ retval = smpi_create_request(&j, 1, MPI_INT, 0,
+ rankkeymap[j * 2], 0, comm, &request);
+ request->data = tempcomm;
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, &status);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ } else {
+ *comm_out = tempcomm;
+ }
+ }
+ }
+ } else {
+ colorkey[0] = color;
+ colorkey[1] = key;
+ retval = smpi_create_request(colorkey, 2, MPI_INT, rank, 0, 0, comm,
+ &request);
+ smpi_mpi_isend(request);
+ smpi_mpi_wait(request, &status);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ if (MPI_UNDEFINED != color) {
+ retval = smpi_create_request(colorkey, 1, MPI_INT, 0, rank, 0, comm,
+ &request);
+ smpi_mpi_irecv(request);
+ smpi_mpi_wait(request, &status);
+ *comm_out = request->data;
+ }
+ }
+
+ smpi_bench_begin();
+
+ return retval;
}
-int MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
+double SMPI_MPI_Wtime( void )
{
- int retval = MPI_SUCCESS;
- int src;
- smpi_mpi_request_t request;
- int rank;
- smpi_bench_end();
- src = smpi_mpi_comm_rank_self(comm);
- retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, &request);
- if (NULL != request && MPI_SUCCESS == retval) {
- retval = smpi_isend(request);
- if (MPI_SUCCESS == retval) {
- smpi_wait(request, MPI_STATUS_IGNORE);
- }
- rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
- xbt_mallocator_release(smpi_global->request_mallocator, request);
- }
- smpi_bench_begin();
- return retval;
+ return ( SIMIX_get_clock() );
}
