2 /* Copyright (c) 2007-2014. The SimGrid Team.
3 * All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_rma, smpi, "Logging specific to SMPI (RMA operations)");
14 xbt_bar_t creation_bar = NULL;
16 typedef struct s_smpi_mpi_win{
25 MPI_Win* connected_wins;
30 MPI_Win smpi_mpi_win_create( void *base, MPI_Aint size, int disp_unit, MPI_Info info, MPI_Comm comm){
34 int comm_size = smpi_comm_size(comm);
35 int rank=smpi_comm_rank(comm);
36 XBT_DEBUG("Creating window");
38 win = xbt_new(s_smpi_mpi_win_t, 1);
41 win->disp_unit = disp_unit;
46 win->requests = xbt_dynar_new(sizeof(MPI_Request), NULL);
47 win->connected_wins = xbt_malloc0(comm_size*sizeof(MPI_Win));
48 win->connected_wins[rank] = win;
51 win->bar=xbt_barrier_init(comm_size);
54 mpi_coll_allgather_fun(&(win->connected_wins[rank]),
62 mpi_coll_bcast_fun( &(win->bar),
68 mpi_coll_barrier_fun(comm);
73 int smpi_mpi_win_free( MPI_Win* win){
75 //As per the standard, perform a barrier to ensure every async comm is finished
76 xbt_barrier_wait((*win)->bar);
77 xbt_dynar_free(&(*win)->requests);
78 xbt_free((*win)->connected_wins);
79 if ((*win)->name != NULL){
80 xbt_free((*win)->name);
87 void smpi_mpi_win_get_name(MPI_Win win, char* name, int* length){
93 *length = strlen(win->name);
94 strcpy(name, win->name);
97 void smpi_mpi_win_get_group(MPI_Win win, MPI_Group* group){
98 if(win->comm != MPI_COMM_NULL)
99 *group = smpi_comm_group(win->comm);
102 void smpi_mpi_win_set_name(MPI_Win win, char* name){
103 win->name = strdup(name);;
107 int smpi_mpi_win_fence( int assert, MPI_Win win){
109 XBT_DEBUG("Entering fence");
111 if(assert != MPI_MODE_NOPRECEDE){
112 xbt_barrier_wait(win->bar);
114 xbt_dynar_t reqs = win->requests;
115 int size = xbt_dynar_length(reqs);
118 // start all requests that have been prepared by another process
119 xbt_dynar_foreach(reqs, cpt, req){
120 if (req->flags & PREPARED) smpi_mpi_start(req);
123 MPI_Request* treqs = xbt_dynar_to_array(reqs);
124 smpi_mpi_waitall(size,treqs,MPI_STATUSES_IGNORE);
126 win->requests=xbt_dynar_new(sizeof(MPI_Request), NULL);
129 win->assert = assert;
131 xbt_barrier_wait(win->bar);
132 XBT_DEBUG("Leaving fence ");
137 int smpi_mpi_put( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
138 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Win win)
140 //get receiver pointer
141 MPI_Win recv_win = win->connected_wins[target_rank];
143 void* recv_addr = (void*) ( ((char*)recv_win->base) + target_disp * recv_win->disp_unit);
144 smpi_datatype_use(origin_datatype);
145 smpi_datatype_use(target_datatype);
146 XBT_DEBUG("Entering MPI_Put to %d", target_rank);
148 if(target_rank != smpi_comm_rank(win->comm)){
149 //prepare send_request
150 MPI_Request sreq = smpi_rma_send_init(origin_addr, origin_count, origin_datatype,
151 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+1, win->comm, MPI_OP_NULL);
153 //prepare receiver request
154 MPI_Request rreq = smpi_rma_recv_init(recv_addr, target_count, target_datatype,
155 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+1, recv_win->comm, MPI_OP_NULL);
157 //push request to receiver's win
158 xbt_dynar_push_as(recv_win->requests, MPI_Request, rreq);
161 smpi_mpi_start(sreq);
163 //push request to sender's win
164 xbt_dynar_push_as(win->requests, MPI_Request, sreq);
166 smpi_datatype_copy(origin_addr, origin_count, origin_datatype,
167 recv_addr, target_count, target_datatype);
173 int smpi_mpi_get( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
174 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Win win)
177 MPI_Win send_win = win->connected_wins[target_rank];
179 void* send_addr = (void*)( ((char*)send_win->base) + target_disp * send_win->disp_unit);
180 smpi_datatype_use(origin_datatype);
181 smpi_datatype_use(target_datatype);
182 XBT_DEBUG("Entering MPI_Get from %d", target_rank);
184 if(target_rank != smpi_comm_rank(win->comm)){
185 //prepare send_request
186 MPI_Request sreq = smpi_rma_send_init(send_addr, target_count, target_datatype,
187 smpi_group_index(smpi_comm_group(win->comm),target_rank), smpi_process_index(), RMA_TAG+2, send_win->comm, MPI_OP_NULL);
189 //prepare receiver request
190 MPI_Request rreq = smpi_rma_recv_init(origin_addr, origin_count, origin_datatype,
191 smpi_group_index(smpi_comm_group(win->comm),target_rank), smpi_process_index(), RMA_TAG+2, win->comm, MPI_OP_NULL);
193 //start the send, with another process than us as sender.
194 smpi_mpi_start(sreq);
196 //push request to receiver's win
197 xbt_dynar_push_as(send_win->requests, MPI_Request, sreq);
200 smpi_mpi_start(rreq);
202 //push request to sender's win
203 xbt_dynar_push_as(win->requests, MPI_Request, rreq);
205 smpi_datatype_copy(send_addr, target_count, target_datatype,
206 origin_addr, origin_count, origin_datatype);
213 int smpi_mpi_accumulate( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
214 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win)
216 //FIXME: local version
217 //get receiver pointer
218 MPI_Win recv_win = win->connected_wins[target_rank];
220 void* recv_addr = (void*)( ((char*)recv_win->base) + target_disp * recv_win->disp_unit);
221 XBT_DEBUG("Entering MPI_Accumulate to %d", target_rank);
223 smpi_datatype_use(origin_datatype);
224 smpi_datatype_use(target_datatype);
227 //prepare send_request
228 MPI_Request sreq = smpi_rma_send_init(origin_addr, origin_count, origin_datatype,
229 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+3, win->comm, op);
231 //prepare receiver request
232 MPI_Request rreq = smpi_rma_recv_init(recv_addr, target_count, target_datatype,
233 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+3, recv_win->comm, op);
234 //push request to receiver's win
235 xbt_dynar_push_as(recv_win->requests, MPI_Request, rreq);
237 smpi_mpi_start(sreq);
239 //push request to sender's win
240 xbt_dynar_push_as(win->requests, MPI_Request, sreq);