1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "smpi_mpi_dt_private.h"
14 #include "surf/surf.h"
16 XBT_LOG_NEW_CATEGORY(smpi, "All SMPI categories");
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi,
19 "Logging specific to SMPI (kernel)");
21 typedef struct s_smpi_process_data {
29 } s_smpi_process_data_t;
31 static smpi_process_data_t *process_data = NULL;
32 static int process_count = 0;
34 MPI_Comm MPI_COMM_WORLD = MPI_COMM_NULL;
36 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
38 static char* get_mailbox_name(char* str, int index) {
39 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", (int)(sizeof(int) * 2), index);
43 void smpi_process_init(int *argc, char ***argv)
46 smpi_process_data_t data;
50 proc = SIMIX_process_self();
51 index = atoi((*argv)[1]);
52 data = smpi_process_remote_data(index);
53 simcall_process_set_data(proc, data);
56 memmove(&(*argv)[1], &(*argv)[2], sizeof(char *) * (*argc - 2));
57 (*argv)[(*argc) - 1] = NULL;
62 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
66 void smpi_process_destroy(void)
68 int index = smpi_process_index();
70 XBT_DEBUG("<%d> Process left the game", index);
74 * @brief Prepares the current process for termination.
76 void smpi_process_finalize(void)
78 // wait for all pending asynchronous comms to finish
79 while (SIMIX_process_has_pending_comms(SIMIX_process_self())) {
80 simcall_process_sleep(1);
84 int smpi_process_argc(void) {
85 smpi_process_data_t data = smpi_process_data();
87 return data->argc ? *(data->argc) - 1 : 0;
90 int smpi_process_getarg(integer* index, char* dst, ftnlen len) {
91 smpi_process_data_t data = smpi_process_data();
95 if(!data->argc || !data->argv
96 || *index < 1 || *index >= *(data->argc)) {
99 arg = (*data->argv)[*index];
100 for(i = 0; i < len && arg[i] != '\0'; i++) {
103 for(; i < len; i++) {
109 int smpi_global_size(void) {
110 char* value = getenv("SMPI_GLOBAL_SIZE");
113 fprintf(stderr, "Please set env var SMPI_GLOBAL_SIZE to expected number of processes.\n");
119 smpi_process_data_t smpi_process_data(void)
121 return SIMIX_process_self_get_data(SIMIX_process_self());
124 smpi_process_data_t smpi_process_remote_data(int index)
126 return process_data[index];
129 int smpi_process_count(void)
131 return process_count;
134 int smpi_process_index(void)
136 smpi_process_data_t data = smpi_process_data();
141 smx_rdv_t smpi_process_mailbox(void) {
142 smpi_process_data_t data = smpi_process_data();
144 return data->mailbox;
147 smx_rdv_t smpi_process_remote_mailbox(int index) {
148 smpi_process_data_t data = smpi_process_remote_data(index);
150 return data->mailbox;
153 xbt_os_timer_t smpi_process_timer(void)
155 smpi_process_data_t data = smpi_process_data();
160 void smpi_process_simulated_start(void)
162 smpi_process_data_t data = smpi_process_data();
164 data->simulated = SIMIX_get_clock();
167 double smpi_process_simulated_elapsed(void)
169 smpi_process_data_t data = smpi_process_data();
171 return SIMIX_get_clock() - data->simulated;
174 MPI_Comm smpi_process_comm_self(void)
176 smpi_process_data_t data = smpi_process_data();
178 return data->comm_self;
181 void print_request(const char *message, MPI_Request request)
183 XBT_DEBUG("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
184 message, request, request->buf, request->size,
185 request->src, request->dst, request->tag, request->flags);
188 void smpi_global_init(void)
192 char name[MAILBOX_NAME_MAXLEN];
194 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_data_callback);
195 process_count = SIMIX_process_count();
196 process_data = xbt_new(smpi_process_data_t, process_count);
197 for (i = 0; i < process_count; i++) {
198 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
199 process_data[i]->index = i;
200 process_data[i]->argc = NULL;
201 process_data[i]->argv = NULL;
202 process_data[i]->mailbox = simcall_rdv_create(get_mailbox_name(name, i));
203 process_data[i]->timer = xbt_os_timer_new();
204 group = smpi_group_new(1);
205 process_data[i]->comm_self = smpi_comm_new(group);
206 smpi_group_set_mapping(group, i, 0);
208 group = smpi_group_new(process_count);
209 MPI_COMM_WORLD = smpi_comm_new(group);
210 for (i = 0; i < process_count; i++) {
211 smpi_group_set_mapping(group, i, i);
215 void smpi_global_destroy(void)
217 int count = smpi_process_count();
220 smpi_bench_destroy();
221 smpi_comm_destroy(MPI_COMM_WORLD);
222 MPI_COMM_WORLD = MPI_COMM_NULL;
223 for (i = 0; i < count; i++) {
224 smpi_comm_destroy(process_data[i]->comm_self);
225 xbt_os_timer_free(process_data[i]->timer);
226 simcall_rdv_destroy(process_data[i]->mailbox);
227 xbt_free(process_data[i]);
229 xbt_free(process_data);
233 /* Fortran specific stuff */
234 /* With smpicc, the following weak symbols are used */
235 /* With smpiff, the following weak symbols are replaced by those in libf2c */
236 int __attribute__((weak)) xargc;
237 char** __attribute__((weak)) xargv;
239 int __attribute__((weak)) main(int argc, char** argv) {
247 srand(SMPI_RAND_SEED);
249 if(getenv("SMPI_PRETEND_CC") != NULL) {
250 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the configuration tools */
255 TRACE_global_init(&xargc, xargv);
258 SIMIX_global_init(&xargc, xargv);
264 // parse the platform file: get the host list
265 SIMIX_create_environment(xargv[1]);
267 SIMIX_function_register_default(smpi_simulated_main);
268 SIMIX_launch_application(xargv[2]);
272 /* Clean IO before the run */
281 if (xbt_cfg_get_int(_surf_cfg_set, "smpi/display_timing"))
282 XBT_INFO("Simulation time: %g seconds.", SIMIX_get_clock());
284 smpi_global_destroy();