+/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
#include "private.h"
#include "xbt/time.h"
+#include "mc/mc.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi,
"Logging specific to SMPI (base)");
XBT_LOG_EXTERNAL_CATEGORY(smpi_sender);
XBT_LOG_EXTERNAL_CATEGORY(smpi_util);
-void smpi_process_init(int* argc, char*** argv) {
- int index;
- smpi_process_data_t data;
- smx_process_t proc;
-
- proc = SIMIX_process_self();
- index = atoi((*argv)[1]);
- data = smpi_process_remote_data(index);
- SIMIX_process_set_data(proc, data);
- if (*argc > 2) {
- free((*argv)[1]);
- memmove(&(*argv)[1], &(*argv)[2], sizeof(char *) * (*argc - 2));
- (*argv)[(*argc) - 1] = NULL;
- }
- (*argc)--;
- DEBUG2("<%d> New process in the game: %p", index, proc);
+static int match_recv(void* a, void* b) {
+ MPI_Request ref = (MPI_Request)a;
+ MPI_Request req = (MPI_Request)b;
+
+ xbt_assert0(ref, "Cannot match recv against null reference");
+ xbt_assert0(req, "Cannot match recv against null request");
+ return req->comm == ref->comm
+ && (ref->src == MPI_ANY_SOURCE || req->src == ref->src)
+ && (ref->tag == MPI_ANY_TAG || req->tag == ref->tag);
}
-void smpi_process_destroy(void) {
- int index = smpi_process_index();
+static int match_send(void* a, void* b) {
+ MPI_Request ref = (MPI_Request)a;
+ MPI_Request req = (MPI_Request)b;
- DEBUG1("<%d> Process left the game", index);
+ xbt_assert0(ref, "Cannot match send against null reference");
+ xbt_assert0(req, "Cannot match send against null request");
+ return req->comm == ref->comm
+ && (req->src == MPI_ANY_SOURCE || req->src == ref->src)
+ && (req->tag == MPI_ANY_TAG || req->tag == ref->tag);
}
-/* MPI Low level calls */
-MPI_Request smpi_mpi_isend(void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm) {
+static MPI_Request build_request(void *buf, int count,
+ MPI_Datatype datatype, int src, int dst,
+ int tag, MPI_Comm comm, unsigned flags)
+{
MPI_Request request;
request = xbt_new(s_smpi_mpi_request_t, 1);
- request->comm = comm;
- request->src = smpi_comm_rank(comm);
+ request->buf = buf;
+ request->size = smpi_datatype_size(datatype) * count;
+ request->src = src;
request->dst = dst;
request->tag = tag;
- request->size = smpi_datatype_size(datatype) * count;
- request->complete = 0;
- smpi_process_post_send(comm, request);
- request->pair = SIMIX_network_isend(request->rdv, request->size, -1.0, buf, request->size, request);
+ request->comm = comm;
+ request->action = NULL;
+ request->flags = flags;
+#ifdef HAVE_TRACING
+ request->send = 0;
+ request->recv = 0;
+#endif
return request;
}
-MPI_Request smpi_mpi_irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm) {
- MPI_Request request;
+/* MPI Low level calls */
+MPI_Request smpi_mpi_send_init(void *buf, int count, MPI_Datatype datatype,
+ int dst, int tag, MPI_Comm comm)
+{
+ MPI_Request request =
+ build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
+ comm, PERSISTENT | SEND);
+
+ return request;
+}
+
+MPI_Request smpi_mpi_recv_init(void *buf, int count, MPI_Datatype datatype,
+ int src, int tag, MPI_Comm comm)
+{
+ MPI_Request request =
+ build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
+ comm, PERSISTENT | RECV);
- request = xbt_new(s_smpi_mpi_request_t, 1);
- request->comm = comm;
- request->src = src;
- request->dst = smpi_comm_rank(comm);
- request->tag = tag;
- request->size = smpi_datatype_size(datatype) * count;
- request->complete = 0;
- smpi_process_post_recv(request);
- request->pair = SIMIX_network_irecv(request->rdv, buf, &request->size);
return request;
}
-void smpi_mpi_recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status) {
+void smpi_mpi_start(MPI_Request request)
+{
+ smx_rdv_t mailbox;
+
+ xbt_assert0(!request->action,
+ "Cannot (re)start a non-finished communication");
+ if(request->flags & RECV) {
+ print_request("New recv", request);
+ mailbox = smpi_process_mailbox();
+ request->action = SIMIX_req_comm_irecv(mailbox, request->buf, &request->size, &match_recv, request);
+ } else {
+ print_request("New send", request);
+ mailbox = smpi_process_remote_mailbox(request->dst);
+ request->action = SIMIX_req_comm_isend(mailbox, request->size, -1.0,
+ request->buf, request->size, &match_send, request, 0);
+#ifdef HAVE_TRACING
+ SIMIX_req_set_category (request->action, TRACE_internal_smpi_get_category());
+#endif
+ }
+}
+
+void smpi_mpi_startall(int count, MPI_Request * requests)
+{
+ int i;
+
+ for(i = 0; i < count; i++) {
+ smpi_mpi_start(requests[i]);
+ }
+}
+
+void smpi_mpi_request_free(MPI_Request * request)
+{
+ xbt_free(*request);
+ *request = MPI_REQUEST_NULL;
+}
+
+MPI_Request smpi_isend_init(void *buf, int count, MPI_Datatype datatype,
+ int dst, int tag, MPI_Comm comm)
+{
+ MPI_Request request =
+ build_request(buf, count, datatype, smpi_comm_rank(comm), dst, tag,
+ comm, NON_PERSISTENT | SEND);
+
+ return request;
+}
+
+MPI_Request smpi_mpi_isend(void *buf, int count, MPI_Datatype datatype,
+ int dst, int tag, MPI_Comm comm)
+{
+ MPI_Request request =
+ smpi_isend_init(buf, count, datatype, dst, tag, comm);
+
+ smpi_mpi_start(request);
+ return request;
+}
+
+MPI_Request smpi_irecv_init(void *buf, int count, MPI_Datatype datatype,
+ int src, int tag, MPI_Comm comm)
+{
+ MPI_Request request =
+ build_request(buf, count, datatype, src, smpi_comm_rank(comm), tag,
+ comm, NON_PERSISTENT | RECV);
+
+ return request;
+}
+
+MPI_Request smpi_mpi_irecv(void *buf, int count, MPI_Datatype datatype,
+ int src, int tag, MPI_Comm comm)
+{
+ MPI_Request request =
+ smpi_irecv_init(buf, count, datatype, src, tag, comm);
+
+ smpi_mpi_start(request);
+ return request;
+}
+
+void smpi_mpi_recv(void *buf, int count, MPI_Datatype datatype, int src,
+ int tag, MPI_Comm comm, MPI_Status * status)
+{
MPI_Request request;
request = smpi_mpi_irecv(buf, count, datatype, src, tag, comm);
smpi_mpi_wait(&request, status);
}
-void smpi_mpi_send(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm) {
+void smpi_mpi_send(void *buf, int count, MPI_Datatype datatype, int dst,
+ int tag, MPI_Comm comm)
+{
MPI_Request request;
- request = smpi_mpi_isend(buf, count, datatype, src, tag, comm);
+ request = smpi_mpi_isend(buf, count, datatype, dst, tag, comm);
smpi_mpi_wait(&request, MPI_STATUS_IGNORE);
}
-void smpi_mpi_sendrecv(void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf, int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status) {
+void smpi_mpi_sendrecv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
+ int dst, int sendtag, void *recvbuf, int recvcount,
+ MPI_Datatype recvtype, int src, int recvtag,
+ MPI_Comm comm, MPI_Status * status)
+{
MPI_Request requests[2];
MPI_Status stats[2];
- requests[0] = smpi_mpi_isend(sendbuf, sendcount, sendtype, dst, sendtag, comm);
- requests[1] = smpi_mpi_irecv(recvbuf, recvcount, recvtype, src, recvtag, comm);
+ requests[0] =
+ smpi_isend_init(sendbuf, sendcount, sendtype, dst, sendtag, comm);
+ requests[1] =
+ smpi_irecv_init(recvbuf, recvcount, recvtype, src, recvtag, comm);
+ smpi_mpi_startall(2, requests);
smpi_mpi_waitall(2, requests, stats);
if(status != MPI_STATUS_IGNORE) {
// Copy receive status
}
}
-static void finish_wait(MPI_Request* request, MPI_Status* status) {
- MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
+int smpi_mpi_get_count(MPI_Status * status, MPI_Datatype datatype)
+{
+ return status->count / smpi_datatype_size(datatype);
+}
+
+static void finish_wait(MPI_Request * request, MPI_Status * status)
+{
+ MPI_Request req = *request;
- xbt_assert0(data != MPI_REQUEST_NULL, "Erroneous situation");
if(status != MPI_STATUS_IGNORE) {
- status->MPI_SOURCE = (*request)->src;
- status->MPI_TAG = (*request)->tag;
+ status->MPI_SOURCE = req->src;
+ status->MPI_TAG = req->tag;
status->MPI_ERROR = MPI_SUCCESS;
+ status->count = req->size;
}
- DEBUG3("finishing wait for %p [data = %p, complete = %d]", *request, data, data->complete);
- // data == *request if sender is first to finish its wait
- // data != *request if receiver is first to finish its wait
- if(data->complete == 0) {
- // first arrives here
- data->complete = 1;
- if(data != *request) {
- // receveiver cleans its part
- xbt_free(*request);
- }
+ print_request("Finishing", req);
+ if(req->flags & NON_PERSISTENT) {
+ smpi_mpi_request_free(request);
} else {
- // second arrives here
- if(data != *request) {
- // receiver cleans everything
- xbt_free(data);
- }
- xbt_free(*request);
+ req->action = NULL;
}
- *request = MPI_REQUEST_NULL;
}
-int smpi_mpi_test(MPI_Request* request, MPI_Status* status) {
- MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
- int flag = data && data->complete == 1;
+int smpi_mpi_test(MPI_Request * request, MPI_Status * status)
+{
+ int flag = SIMIX_req_comm_test((*request)->action);
- if(flag) {
- SIMIX_communication_destroy((*request)->pair);
- finish_wait(request, status);
- }
- return flag;
+ if(flag) {
+ smpi_mpi_wait(request, status);
+ }
+ return flag;
}
-int smpi_mpi_testany(int count, MPI_Request requests[], int* index, MPI_Status* status) {
- MPI_Request data;
- int i, flag;
+int smpi_mpi_testany(int count, MPI_Request requests[], int *index,
+ MPI_Status * status)
+{
+ xbt_dynar_t comms;
+ int i, flag, size;
+ int* map;
*index = MPI_UNDEFINED;
flag = 0;
- for(i = 0; i < count; i++) {
- if(requests[i] != MPI_REQUEST_NULL) {
- data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
- if(data != MPI_REQUEST_NULL && data->complete == 1) {
- SIMIX_communication_destroy(requests[i]->pair);
- finish_wait(&requests[i], status);
- *index = i;
+ if(count > 0) {
+ comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
+ map = xbt_new(int, count);
+ size = 0;
+ for(i = 0; i < count; i++) {
+ if(requests[i]->action) {
+ xbt_dynar_push(comms, &requests[i]->action);
+ map[size] = i;
+ size++;
+ }
+ }
+ if(size > 0) {
+ *index = SIMIX_req_comm_testany(comms);
+ *index = map[*index];
+ if(*index != MPI_UNDEFINED) {
+ smpi_mpi_wait(&requests[*index], status);
flag = 1;
- break;
}
}
+ xbt_free(map);
+ xbt_dynar_free(&comms);
}
return flag;
}
-void smpi_mpi_wait(MPI_Request* request, MPI_Status* status) {
- MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
-
- DEBUG6("wait for request %p (%p: %p) [src = %d, dst = %d, tag = %d]",
- *request, (*request)->pair, data, (*request)->src, (*request)->dst, (*request)->tag);
- // data is null if receiver waits before sender enters the rdv
- if(data == MPI_REQUEST_NULL || data->complete == 0) {
- SIMIX_network_wait((*request)->pair, -1.0);
- } else {
- SIMIX_communication_destroy((*request)->pair);
- }
+void smpi_mpi_wait(MPI_Request * request, MPI_Status * status)
+{
+ print_request("Waiting", *request);
+ SIMIX_req_comm_wait((*request)->action, -1.0);
finish_wait(request, status);
}
-int smpi_mpi_waitany(int count, MPI_Request requests[], MPI_Status* status) {
+int smpi_mpi_waitany(int count, MPI_Request requests[],
+ MPI_Status * status)
+{
xbt_dynar_t comms;
- MPI_Request data;
int i, size, index;
- int* map;
+ int *map;
index = MPI_UNDEFINED;
if(count > 0) {
- // First check for already completed requests
+ // Wait for a request to complete
+ comms = xbt_dynar_new(sizeof(smx_action_t), NULL);
+ map = xbt_new(int, count);
+ size = 0;
+ DEBUG0("Wait for one of");
for(i = 0; i < count; i++) {
if(requests[i] != MPI_REQUEST_NULL) {
- data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
- if(data != MPI_REQUEST_NULL && data->complete == 1) {
- index = i;
- SIMIX_communication_destroy(requests[index]->pair); // always succeeds (but cleans the simix layer)
- break;
- }
+ print_request(" ", requests[i]);
+ xbt_dynar_push(comms, &requests[i]->action);
+ map[size] = i;
+ size++;
}
}
- if(index == MPI_UNDEFINED) {
- // Otherwise, wait for a request to complete
- comms = xbt_dynar_new(sizeof(smx_comm_t), NULL);
- map = xbt_new(int, count);
- size = 0;
- DEBUG0("Wait for one of");
- for(i = 0; i < count; i++) {
- if(requests[i] != MPI_REQUEST_NULL && requests[i]->complete == 0) {
- DEBUG4(" request %p [src = %d, dst = %d, tag = %d]",
- requests[i], requests[i]->src, requests[i]->dst, requests[i]->tag);
- xbt_dynar_push(comms, &requests[i]->pair);
- map[size] = i;
- size++;
- }
- }
- if(size > 0) {
- index = SIMIX_network_waitany(comms);
- index = map[index];
- }
- xbt_free(map);
- xbt_dynar_free_container(&comms);
- }
- if(index != MPI_UNDEFINED) {
+ if(size > 0) {
+ index = SIMIX_req_comm_waitany(comms);
+ index = map[index];
finish_wait(&requests[index], status);
}
+ xbt_free(map);
+ xbt_dynar_free(&comms);
}
return index;
}
-void smpi_mpi_waitall(int count, MPI_Request requests[], MPI_Status status[]) {
- int index;
+void smpi_mpi_waitall(int count, MPI_Request requests[],
+ MPI_Status status[])
+{
+ int index, c;
MPI_Status stat;
-
- while(count > 0) {
- index = smpi_mpi_waitany(count, requests, &stat);
- if(index == MPI_UNDEFINED) {
- break;
+ MPI_Status *pstat = status == MPI_STATUS_IGNORE ? MPI_STATUS_IGNORE : &stat;
+
+ for(c = 0; c < count; c++) {
+ if(MC_IS_ENABLED) {
+ smpi_mpi_wait(&requests[c], pstat);
+ index = c;
+ } else {
+ index = smpi_mpi_waitany(count, requests, pstat);
+ if(index == MPI_UNDEFINED) {
+ break;
+ }
}
if(status != MPI_STATUS_IGNORE) {
- memcpy(&status[index], &stat, sizeof(stat));
+ memcpy(&status[index], pstat, sizeof(*pstat));
}
- // Move the last request to the found position
- requests[index] = requests[count - 1];
- requests[count - 1] = MPI_REQUEST_NULL;
- count--;
}
}
-int smpi_mpi_waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]) {
- MPI_Request data;
- int i, count;
+int smpi_mpi_waitsome(int incount, MPI_Request requests[], int *indices,
+ MPI_Status status[])
+{
+ int i, count, index;
count = 0;
- for(i = 0; i < count; i++) {
- if(requests[i] != MPI_REQUEST_NULL) {
- data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
- if(data != MPI_REQUEST_NULL && data->complete == 1) {
- finish_wait(&requests[i], status != MPI_STATUS_IGNORE ? &status[i] : MPI_STATUS_IGNORE);
- indices[count] = i;
- count++;
- }
- }
+ for(i = 0; i < incount; i++) {
+ if(smpi_mpi_testany(incount, requests, &index, status)) {
+ indices[count] = index;
+ count++;
+ }
}
return count;
}
-void smpi_mpi_bcast(void* buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
+void smpi_mpi_bcast(void *buf, int count, MPI_Datatype datatype, int root,
+ MPI_Comm comm)
+{
// arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
nary_tree_bcast(buf, count, datatype, root, comm, 4);
}
-void smpi_mpi_barrier(MPI_Comm comm) {
+void smpi_mpi_barrier(MPI_Comm comm)
+{
// arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
nary_tree_barrier(comm, 4);
}
-void smpi_mpi_gather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+void smpi_mpi_gather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
+ void *recvbuf, int recvcount, MPI_Datatype recvtype,
+ int root, MPI_Comm comm)
+{
int system_tag = 666;
int rank, size, src, index, sendsize, recvsize;
- MPI_Request* requests;
+ MPI_Request *requests;
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
sendsize = smpi_datatype_size(sendtype);
recvsize = smpi_datatype_size(recvtype);
// Local copy from root
- memcpy(&((char*)recvbuf)[root * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
+ memcpy(&((char *) recvbuf)[root * recvcount * recvsize], sendbuf,
+ sendcount * sendsize * sizeof(char));
// Receive buffers from senders
requests = xbt_new(MPI_Request, size - 1);
index = 0;
for(src = 0; src < size; src++) {
if(src != root) {
- requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[src * recvcount * recvsize], recvcount, recvtype, src, system_tag, comm);
+ requests[index] = smpi_irecv_init(&((char *) recvbuf)
+ [src * recvcount * recvsize],
+ recvcount, recvtype, src,
+ system_tag, comm);
index++;
}
}
// Wait for completion of irecv's.
+ smpi_mpi_startall(size - 1, requests);
smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
}
-void smpi_mpi_gatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+void 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 system_tag = 666;
int rank, size, src, index, sendsize;
- MPI_Request* requests;
+ MPI_Request *requests;
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
} else {
sendsize = smpi_datatype_size(sendtype);
// Local copy from root
- memcpy(&((char*)recvbuf)[displs[root]], sendbuf, sendcount * sendsize * sizeof(char));
+ memcpy(&((char *) recvbuf)[displs[root]], sendbuf,
+ sendcount * sendsize * sizeof(char));
// Receive buffers from senders
requests = xbt_new(MPI_Request, size - 1);
index = 0;
for(src = 0; src < size; src++) {
if(src != root) {
- requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[src]], recvcounts[src], recvtype, src, system_tag, comm);
+ requests[index] =
+ smpi_irecv_init(&((char *) recvbuf)[displs[src]],
+ recvcounts[src], recvtype, src, system_tag,
+ comm);
index++;
}
}
// Wait for completion of irecv's.
+ smpi_mpi_startall(size - 1, requests);
smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
}
-void smpi_mpi_allgather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
+void smpi_mpi_allgather(void *sendbuf, int sendcount,
+ MPI_Datatype sendtype, void *recvbuf,
+ int recvcount, MPI_Datatype recvtype,
+ MPI_Comm comm)
+{
int system_tag = 666;
int rank, size, other, index, sendsize, recvsize;
- MPI_Request* requests;
+ MPI_Request *requests;
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
sendsize = smpi_datatype_size(sendtype);
recvsize = smpi_datatype_size(recvtype);
// Local copy from self
- memcpy(&((char*)recvbuf)[rank * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
+ memcpy(&((char *) recvbuf)[rank * recvcount * recvsize], sendbuf,
+ sendcount * sendsize * sizeof(char));
// Send/Recv buffers to/from others;
requests = xbt_new(MPI_Request, 2 * (size - 1));
index = 0;
for(other = 0; other < size; other++) {
if(other != rank) {
- requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
+ requests[index] =
+ smpi_isend_init(sendbuf, sendcount, sendtype, other, system_tag,
+ comm);
index++;
- requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[other * recvcount * recvsize], recvcount, recvtype, other, system_tag, comm);
+ requests[index] = smpi_irecv_init(&((char *) recvbuf)
+ [other * recvcount * recvsize],
+ recvcount, recvtype, other,
+ system_tag, comm);
index++;
}
}
// Wait for completion of all comms.
+ smpi_mpi_startall(2 * (size - 1), requests);
smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
-void smpi_mpi_allgatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, MPI_Comm comm) {
+void smpi_mpi_allgatherv(void *sendbuf, int sendcount,
+ MPI_Datatype sendtype, void *recvbuf,
+ int *recvcounts, int *displs,
+ MPI_Datatype recvtype, MPI_Comm comm)
+{
int system_tag = 666;
int rank, size, other, index, sendsize, recvsize;
- MPI_Request* requests;
+ MPI_Request *requests;
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
sendsize = smpi_datatype_size(sendtype);
recvsize = smpi_datatype_size(recvtype);
// Local copy from self
- memcpy(&((char*)recvbuf)[displs[rank]], sendbuf, sendcount * sendsize * sizeof(char));
+ memcpy(&((char *) recvbuf)[displs[rank]], sendbuf,
+ sendcount * sendsize * sizeof(char));
// Send buffers to others;
requests = xbt_new(MPI_Request, 2 * (size - 1));
index = 0;
for(other = 0; other < size; other++) {
if(other != rank) {
- requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
+ requests[index] =
+ smpi_isend_init(sendbuf, sendcount, sendtype, other, system_tag,
+ comm);
index++;
- requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[other]], recvcounts[other], recvtype, other, system_tag, comm);
+ requests[index] =
+ smpi_irecv_init(&((char *) recvbuf)[displs[other]],
+ recvcounts[other], recvtype, other, system_tag,
+ comm);
index++;
}
}
// Wait for completion of all comms.
+ smpi_mpi_startall(2 * (size - 1), requests);
smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
-void smpi_mpi_scatter(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+void smpi_mpi_scatter(void *sendbuf, int sendcount, MPI_Datatype sendtype,
+ void *recvbuf, int recvcount, MPI_Datatype recvtype,
+ int root, MPI_Comm comm)
+{
int system_tag = 666;
int rank, size, dst, index, sendsize, recvsize;
- MPI_Request* requests;
+ MPI_Request *requests;
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
if(rank != root) {
// Recv buffer from root
- smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
+ smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm,
+ MPI_STATUS_IGNORE);
} else {
sendsize = smpi_datatype_size(sendtype);
recvsize = smpi_datatype_size(recvtype);
// Local copy from root
- memcpy(recvbuf, &((char*)sendbuf)[root * sendcount * sendsize], recvcount * recvsize * sizeof(char));
+ memcpy(recvbuf, &((char *) sendbuf)[root * sendcount * sendsize],
+ recvcount * recvsize * sizeof(char));
// Send buffers to receivers
requests = xbt_new(MPI_Request, size - 1);
index = 0;
for(dst = 0; dst < size; dst++) {
if(dst != root) {
- requests[index] = smpi_mpi_isend(&((char*)sendbuf)[dst * sendcount * sendsize], sendcount, sendtype, dst, system_tag, comm);
+ requests[index] = smpi_isend_init(&((char *) sendbuf)
+ [dst * sendcount * sendsize],
+ sendcount, sendtype, dst,
+ system_tag, comm);
index++;
}
}
// Wait for completion of isend's.
+ smpi_mpi_startall(size - 1, requests);
smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
}
-void smpi_mpi_scatterv(void* sendbuf, int* sendcounts, int* displs, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+void 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 system_tag = 666;
int rank, size, dst, index, sendsize, recvsize;
- MPI_Request* requests;
+ MPI_Request *requests;
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
if(rank != root) {
// Recv buffer from root
- smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
+ smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm,
+ MPI_STATUS_IGNORE);
} else {
sendsize = smpi_datatype_size(sendtype);
recvsize = smpi_datatype_size(recvtype);
// Local copy from root
- memcpy(recvbuf, &((char*)sendbuf)[displs[root]], recvcount * recvsize * sizeof(char));
+ memcpy(recvbuf, &((char *) sendbuf)[displs[root]],
+ recvcount * recvsize * sizeof(char));
// Send buffers to receivers
requests = xbt_new(MPI_Request, size - 1);
index = 0;
for(dst = 0; dst < size; dst++) {
if(dst != root) {
- requests[index] = smpi_mpi_isend(&((char*)sendbuf)[displs[dst]], sendcounts[dst], sendtype, dst, system_tag, comm);
+ requests[index] =
+ smpi_isend_init(&((char *) sendbuf)[displs[dst]],
+ sendcounts[dst], sendtype, dst, system_tag,
+ comm);
index++;
}
}
// Wait for completion of isend's.
+ smpi_mpi_startall(size - 1, requests);
smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
}
-void smpi_mpi_reduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm) {
+void smpi_mpi_reduce(void *sendbuf, void *recvbuf, int count,
+ MPI_Datatype datatype, MPI_Op op, int root,
+ MPI_Comm comm)
+{
int system_tag = 666;
int rank, size, src, index, datasize;
- MPI_Request* requests;
- void** tmpbufs;
-
+ MPI_Request *requests;
+ void **tmpbufs;
+
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
if(rank != root) {
} else {
datasize = smpi_datatype_size(datatype);
// Local copy from root
- memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
+ memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
// Receive buffers from senders
//TODO: make a MPI_barrier here ?
requests = xbt_new(MPI_Request, size - 1);
- tmpbufs = xbt_new(void*, size - 1);
+ tmpbufs = xbt_new(void *, size - 1);
index = 0;
for(src = 0; src < size; src++) {
if(src != root) {
tmpbufs[index] = xbt_malloc(count * datasize);
- requests[index] = smpi_mpi_irecv(tmpbufs[index], count, datatype, src, system_tag, comm);
+ requests[index] =
+ smpi_irecv_init(tmpbufs[index], count, datatype, src,
+ system_tag, comm);
index++;
}
}
// Wait for completion of irecv's.
+ smpi_mpi_startall(size - 1, requests);
for(src = 0; src < size - 1; src++) {
index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
if(index == MPI_UNDEFINED) {
}
}
-void smpi_mpi_allreduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
+void smpi_mpi_allreduce(void *sendbuf, void *recvbuf, int count,
+ MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
+{
smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
smpi_mpi_bcast(recvbuf, count, datatype, 0, comm);
int rank, size, other, index, datasize;
MPI_Request* requests;
void** tmpbufs;
-
+
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
datasize = smpi_datatype_size(datatype);
// Local copy from self
- memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
+ memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
// Send/Recv buffers to/from others;
//TODO: make a MPI_barrier here ?
requests = xbt_new(MPI_Request, 2 * (size - 1));
xbt_free(requests);
*/
}
+
+void smpi_mpi_scan(void *sendbuf, void *recvbuf, int count,
+ MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
+{
+ int system_tag = 666;
+ int rank, size, other, index, datasize;
+ int total;
+ MPI_Request *requests;
+ void **tmpbufs;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ datasize = smpi_datatype_size(datatype);
+ // Local copy from self
+ memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
+ // Send/Recv buffers to/from others;
+ total = rank + (size - (rank + 1));
+ requests = xbt_new(MPI_Request, total);
+ tmpbufs = xbt_new(void *, rank);
+ index = 0;
+ for(other = 0; other < rank; other++) {
+ tmpbufs[index] = xbt_malloc(count * datasize);
+ requests[index] =
+ smpi_irecv_init(tmpbufs[index], count, datatype, other, system_tag,
+ comm);
+ index++;
+ }
+ for(other = rank + 1; other < size; other++) {
+ requests[index] =
+ smpi_isend_init(sendbuf, count, datatype, other, system_tag, comm);
+ index++;
+ }
+ // Wait for completion of all comms.
+ smpi_mpi_startall(size - 1, requests);
+ for(other = 0; other < total; other++) {
+ index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
+ if(index == MPI_UNDEFINED) {
+ break;
+ }
+ if(index < rank) {
+ // #Request is below rank: it's a irecv
+ smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
+ }
+ }
+ for(index = 0; index < size - 1; index++) {
+ xbt_free(tmpbufs[index]);
+ }
+ xbt_free(tmpbufs);
+ xbt_free(requests);
+}
