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 SIMIX_req_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);
73 int smpi_process_argc(void) {
74 smpi_process_data_t data = smpi_process_data();
76 return data->argc ? *(data->argc) - 1 : 0;
79 int smpi_process_getarg(integer* index, char* dst, ftnlen len) {
80 smpi_process_data_t data = smpi_process_data();
84 if(!data->argc || !data->argv
85 || *index < 1 || *index >= *(data->argc)) {
88 arg = (*data->argv)[*index];
89 for(i = 0; i < len && arg[i] != '\0'; i++) {
98 int smpi_global_size(void) {
99 char* value = getenv("SMPI_GLOBAL_SIZE");
102 fprintf(stderr, "Please set env var SMPI_GLOBAL_SIZE to expected number of processes.\n");
108 smpi_process_data_t smpi_process_data(void)
110 return SIMIX_process_self_get_data();
113 smpi_process_data_t smpi_process_remote_data(int index)
115 return process_data[index];
118 int smpi_process_count(void)
120 return process_count;
123 int smpi_process_index(void)
125 smpi_process_data_t data = smpi_process_data();
130 smx_rdv_t smpi_process_mailbox(void) {
131 smpi_process_data_t data = smpi_process_data();
133 return data->mailbox;
136 smx_rdv_t smpi_process_remote_mailbox(int index) {
137 smpi_process_data_t data = smpi_process_remote_data(index);
139 return data->mailbox;
142 xbt_os_timer_t smpi_process_timer(void)
144 smpi_process_data_t data = smpi_process_data();
149 void smpi_process_simulated_start(void)
151 smpi_process_data_t data = smpi_process_data();
153 data->simulated = SIMIX_get_clock();
156 double smpi_process_simulated_elapsed(void)
158 smpi_process_data_t data = smpi_process_data();
160 return SIMIX_get_clock() - data->simulated;
163 MPI_Comm smpi_process_comm_self(void)
165 smpi_process_data_t data = smpi_process_data();
167 return data->comm_self;
170 void print_request(const char *message, MPI_Request request)
172 XBT_DEBUG("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
173 message, request, request->buf, request->size,
174 request->src, request->dst, request->tag, request->flags);
177 void smpi_global_init(void)
181 char name[MAILBOX_NAME_MAXLEN];
183 SIMIX_comm_set_copy_data_callback
184 (&SIMIX_comm_copy_buffer_callback);
185 process_count = SIMIX_process_count();
186 process_data = xbt_new(smpi_process_data_t, process_count);
187 for (i = 0; i < process_count; i++) {
188 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
189 process_data[i]->index = i;
190 process_data[i]->argc = NULL;
191 process_data[i]->argv = NULL;
192 process_data[i]->mailbox = SIMIX_req_rdv_create(get_mailbox_name(name, i));
193 process_data[i]->timer = xbt_os_timer_new();
194 group = smpi_group_new(1);
195 process_data[i]->comm_self = smpi_comm_new(group);
196 smpi_group_set_mapping(group, i, 0);
198 group = smpi_group_new(process_count);
199 MPI_COMM_WORLD = smpi_comm_new(group);
200 for (i = 0; i < process_count; i++) {
201 smpi_group_set_mapping(group, i, i);
205 void smpi_global_destroy(void)
207 int count = smpi_process_count();
210 smpi_bench_destroy();
211 smpi_comm_destroy(MPI_COMM_WORLD);
212 MPI_COMM_WORLD = MPI_COMM_NULL;
213 for (i = 0; i < count; i++) {
214 smpi_comm_destroy(process_data[i]->comm_self);
215 xbt_os_timer_free(process_data[i]->timer);
216 SIMIX_req_rdv_destroy(process_data[i]->mailbox);
217 xbt_free(process_data[i]);
219 xbt_free(process_data);
223 /* Fortran specific stuff */
224 /* With smpicc, the following weak symbols are used */
225 /* With smpiff, the following weak symbols are replaced by those in libf2c */
226 int __attribute__((weak)) xargc;
227 char** __attribute__((weak)) xargv;
229 int __attribute__((weak)) main(int argc, char** argv) {
237 srand(SMPI_RAND_SEED);
239 double default_reference_speed = 20000.0;
240 xbt_cfg_register(&_surf_cfg_set, "smpi/running_power",
241 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
242 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
245 int default_display_timing = 0;
246 xbt_cfg_register(&_surf_cfg_set, "smpi/display_timing",
247 "Boolean indicating whether we should display the timing after simulation.",
248 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
251 double default_threshold = 1e-6;
252 xbt_cfg_register(&_surf_cfg_set, "smpi/cpu_threshold",
253 "Minimal computation time (in seconds) not discarded.",
254 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
257 if(getenv("SMPI_PRETEND_CC") != NULL) {
262 TRACE_global_init(&xargc, xargv);
265 SIMIX_global_init(&xargc, xargv);
271 // parse the platform file: get the host list
272 SIMIX_create_environment(xargv[1]);
274 SIMIX_function_register("smpi_simulated_main", smpi_simulated_main);
275 SIMIX_launch_application(xargv[2]);
279 /* Clean IO before the run */
288 if (xbt_cfg_get_int(_surf_cfg_set, "smpi/display_timing"))
289 XBT_INFO("simulation time %g", SIMIX_get_clock());
291 smpi_global_destroy();
294 TRACE_smpi_release();