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){
88 *length = strlen(win->name);
89 strcpy(name, win->name);
92 void smpi_mpi_win_set_name(MPI_Win win, char* name){
93 win->name = strdup(name);;
97 int smpi_mpi_win_fence( int assert, MPI_Win win){
99 XBT_DEBUG("Entering fence");
101 if(assert != MPI_MODE_NOPRECEDE){
102 xbt_barrier_wait(win->bar);
104 xbt_dynar_t reqs = win->requests;
105 int size = xbt_dynar_length(reqs);
108 // start all requests that have been prepared by another process
109 xbt_dynar_foreach(reqs, cpt, req){
110 if (req->flags & PREPARED) smpi_mpi_start(req);
113 MPI_Request* treqs = xbt_dynar_to_array(reqs);
114 smpi_mpi_waitall(size,treqs,MPI_STATUSES_IGNORE);
116 win->requests=xbt_dynar_new(sizeof(MPI_Request), NULL);
119 win->assert = assert;
121 xbt_barrier_wait(win->bar);
122 XBT_DEBUG("Leaving fence ");
127 int smpi_mpi_put( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
128 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Win win)
130 //get receiver pointer
131 MPI_Win recv_win = win->connected_wins[target_rank];
133 void* recv_addr = (void*) ( ((char*)recv_win->base) + target_disp * recv_win->disp_unit);
134 smpi_datatype_use(origin_datatype);
135 smpi_datatype_use(target_datatype);
136 XBT_DEBUG("Entering MPI_Put to %d", target_rank);
138 if(target_rank != smpi_comm_rank(win->comm)){
139 //prepare send_request
140 MPI_Request sreq = smpi_rma_send_init(origin_addr, origin_count, origin_datatype,
141 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+1, win->comm, MPI_OP_NULL);
143 //prepare receiver request
144 MPI_Request rreq = smpi_rma_recv_init(recv_addr, target_count, target_datatype,
145 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+1, recv_win->comm, MPI_OP_NULL);
147 //push request to receiver's win
148 xbt_dynar_push_as(recv_win->requests, MPI_Request, rreq);
151 smpi_mpi_start(sreq);
153 //push request to sender's win
154 xbt_dynar_push_as(win->requests, MPI_Request, sreq);
156 smpi_datatype_copy(origin_addr, origin_count, origin_datatype,
157 recv_addr, target_count, target_datatype);
163 int smpi_mpi_get( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
164 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Win win)
167 MPI_Win send_win = win->connected_wins[target_rank];
169 void* send_addr = (void*)( ((char*)send_win->base) + target_disp * send_win->disp_unit);
170 smpi_datatype_use(origin_datatype);
171 smpi_datatype_use(target_datatype);
172 XBT_DEBUG("Entering MPI_Get from %d", target_rank);
174 if(target_rank != smpi_comm_rank(win->comm)){
175 //prepare send_request
176 MPI_Request sreq = smpi_rma_send_init(send_addr, target_count, target_datatype,
177 smpi_group_index(smpi_comm_group(win->comm),target_rank), smpi_process_index(), RMA_TAG+2, send_win->comm, MPI_OP_NULL);
179 //prepare receiver request
180 MPI_Request rreq = smpi_rma_recv_init(origin_addr, origin_count, origin_datatype,
181 smpi_group_index(smpi_comm_group(win->comm),target_rank), smpi_process_index(), RMA_TAG+2, win->comm, MPI_OP_NULL);
183 //start the send, with another process than us as sender.
184 smpi_mpi_start(sreq);
186 //push request to receiver's win
187 xbt_dynar_push_as(send_win->requests, MPI_Request, sreq);
190 smpi_mpi_start(rreq);
192 //push request to sender's win
193 xbt_dynar_push_as(win->requests, MPI_Request, rreq);
195 smpi_datatype_copy(send_addr, target_count, target_datatype,
196 origin_addr, origin_count, origin_datatype);
203 int smpi_mpi_accumulate( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
204 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win)
206 //FIXME: local version
207 //get receiver pointer
208 MPI_Win recv_win = win->connected_wins[target_rank];
210 void* recv_addr = (void*)( ((char*)recv_win->base) + target_disp * recv_win->disp_unit);
211 XBT_DEBUG("Entering MPI_Accumulate to %d", target_rank);
213 smpi_datatype_use(origin_datatype);
214 smpi_datatype_use(target_datatype);
217 //prepare send_request
218 MPI_Request sreq = smpi_rma_send_init(origin_addr, origin_count, origin_datatype,
219 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+3, win->comm, op);
221 //prepare receiver request
222 MPI_Request rreq = smpi_rma_recv_init(recv_addr, target_count, target_datatype,
223 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+3, recv_win->comm, op);
224 //push request to receiver's win
225 xbt_dynar_push_as(recv_win->requests, MPI_Request, rreq);
227 smpi_mpi_start(sreq);
229 //push request to sender's win
230 xbt_dynar_push_as(win->requests, MPI_Request, sreq);