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. */
11 #include "smpi_mpi_dt_private.h"
13 #include "surf/surf.h"
15 XBT_LOG_NEW_CATEGORY(smpi, "All SMPI categories");
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi,
18 "Logging specific to SMPI (kernel)");
20 typedef struct s_smpi_process_data {
28 } s_smpi_process_data_t;
30 static smpi_process_data_t *process_data = NULL;
31 static int process_count = 0;
33 MPI_Comm MPI_COMM_WORLD = MPI_COMM_NULL;
35 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
37 static char* get_mailbox_name(char* str, int index) {
38 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", (int)(sizeof(int) * 2), index);
42 void smpi_process_init(int *argc, char ***argv)
45 smpi_process_data_t data;
49 proc = SIMIX_process_self();
50 index = atoi((*argv)[1]);
51 data = smpi_process_remote_data(index);
52 SIMIX_req_process_set_data(proc, data);
55 memmove(&(*argv)[1], &(*argv)[2], sizeof(char *) * (*argc - 2));
56 (*argv)[(*argc) - 1] = NULL;
61 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
65 void smpi_process_destroy(void)
67 int index = smpi_process_index();
69 XBT_DEBUG("<%d> Process left the game", index);
72 int smpi_process_argc(void) {
73 smpi_process_data_t data = smpi_process_data();
75 return data->argc ? *(data->argc) - 1 : 0;
78 int smpi_process_getarg(integer* index, char* dst, ftnlen len) {
79 smpi_process_data_t data = smpi_process_data();
83 if(!data->argc || !data->argv
84 || *index < 1 || *index >= *(data->argc)) {
87 arg = (*data->argv)[*index];
88 for(i = 0; i < len && arg[i] != '\0'; i++) {
97 int smpi_global_size(void) {
98 char* value = getenv("SMPI_GLOBAL_SIZE");
106 smpi_process_data_t smpi_process_data(void)
108 return SIMIX_process_self_get_data(SIMIX_process_self());
111 smpi_process_data_t smpi_process_remote_data(int index)
113 return process_data[index];
116 int smpi_process_count(void)
118 return process_count;
121 int smpi_process_index(void)
123 smpi_process_data_t data = smpi_process_data();
128 smx_rdv_t smpi_process_mailbox(void) {
129 smpi_process_data_t data = smpi_process_data();
131 return data->mailbox;
134 smx_rdv_t smpi_process_remote_mailbox(int index) {
135 smpi_process_data_t data = smpi_process_remote_data(index);
137 return data->mailbox;
140 xbt_os_timer_t smpi_process_timer(void)
142 smpi_process_data_t data = smpi_process_data();
147 void smpi_process_simulated_start(void)
149 smpi_process_data_t data = smpi_process_data();
151 data->simulated = SIMIX_get_clock();
154 double smpi_process_simulated_elapsed(void)
156 smpi_process_data_t data = smpi_process_data();
158 return SIMIX_get_clock() - data->simulated;
161 MPI_Comm smpi_process_comm_self(void)
163 smpi_process_data_t data = smpi_process_data();
165 return data->comm_self;
168 void print_request(const char *message, MPI_Request request)
170 XBT_DEBUG("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
171 message, request, request->buf, request->size,
172 request->src, request->dst, request->tag, request->flags);
175 void smpi_global_init(void)
179 char name[MAILBOX_NAME_MAXLEN];
181 SIMIX_comm_set_copy_data_callback
182 (&SIMIX_comm_copy_buffer_callback);
183 process_count = SIMIX_process_count();
184 process_data = xbt_new(smpi_process_data_t, process_count);
185 for (i = 0; i < process_count; i++) {
186 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
187 process_data[i]->index = i;
188 process_data[i]->argc = NULL;
189 process_data[i]->argv = NULL;
190 process_data[i]->mailbox = SIMIX_req_rdv_create(get_mailbox_name(name, i));
191 process_data[i]->timer = xbt_os_timer_new();
192 group = smpi_group_new(1);
193 process_data[i]->comm_self = smpi_comm_new(group);
194 smpi_group_set_mapping(group, i, 0);
196 group = smpi_group_new(process_count);
197 MPI_COMM_WORLD = smpi_comm_new(group);
198 for (i = 0; i < process_count; i++) {
199 smpi_group_set_mapping(group, i, i);
203 void smpi_global_destroy(void)
205 int count = smpi_process_count();
208 smpi_bench_destroy();
209 smpi_comm_destroy(MPI_COMM_WORLD);
210 MPI_COMM_WORLD = MPI_COMM_NULL;
211 for (i = 0; i < count; i++) {
212 smpi_comm_destroy(process_data[i]->comm_self);
213 xbt_os_timer_free(process_data[i]->timer);
214 SIMIX_req_rdv_destroy(process_data[i]->mailbox);
215 xbt_free(process_data[i]);
217 xbt_free(process_data);
221 /* Fortran specific stuff */
222 /* With smpicc, the following weak symbols are used */
223 /* With smpiff, the following weak symbols are replaced by those in libf2c */
224 int __attribute__((weak)) xargc;
225 char** __attribute__((weak)) xargv;
227 int __attribute__((weak)) main(int argc, char** argv) {
235 srand(SMPI_RAND_SEED);
237 double default_reference_speed = 20000.0;
238 xbt_cfg_register(&_surf_cfg_set, "smpi/running_power",
239 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
240 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
243 int default_display_timing = 0;
244 xbt_cfg_register(&_surf_cfg_set, "smpi/display_timing",
245 "Boolean indicating whether we should display the timing after simulation.",
246 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
249 double default_threshold = 1e-6;
250 xbt_cfg_register(&_surf_cfg_set, "smpi/cpu_threshold",
251 "Minimal computation time (in seconds) not discarded.",
252 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
255 if(getenv("SMPI_PRETEND_CC") != NULL) {
260 TRACE_global_init(&xargc, xargv);
263 SIMIX_global_init(&xargc, xargv);
269 // parse the platform file: get the host list
270 SIMIX_create_environment(xargv[1]);
272 SIMIX_function_register("smpi_simulated_main", smpi_simulated_main);
273 SIMIX_launch_application(xargv[2]);
277 /* Clean IO before the run */
286 if (xbt_cfg_get_int(_surf_cfg_set, "smpi/display_timing"))
287 XBT_INFO("simulation time %g", SIMIX_get_clock());
289 smpi_global_destroy();
292 TRACE_smpi_release();