X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/90343fd64afa87283f3be2ab7c6504cc47652f27..c52c503d21e54cc4ff15a64060c2eb0b265f5f73:/src/simgrid/sg_config.cpp

diff --git a/src/simgrid/sg_config.cpp b/src/simgrid/sg_config.cpp
index bf3dc3b5c0..7cafc923a7 100644
--- a/src/simgrid/sg_config.cpp
+++ b/src/simgrid/sg_config.cpp
@@ -103,7 +103,7 @@ static void sg_config_cmd_line(int *argc, char **argv)
     }
   }
   if (j < *argc) {
-    argv[j] = NULL;
+    argv[j] = nullptr;
     *argc = j;
   }
   if (shall_exit)
@@ -368,6 +368,7 @@ static void describe_model(char *result,int resultsize,
                            const char *name,
                            const char *description)
 {
+  result[0] = '\0';
   char *p = result;
   p += snprintf(result,resultsize-1, "%s. Possible values: %s", description,
             model_description[0].name ? model_description[0].name : "n/a");
@@ -412,31 +413,40 @@ void sg_config_init(int *argc, char **argv)
     describe_model(description,descsize, surf_vm_model_description, "model", "The model to use for the vm");
     xbt_cfg_register_string("vm/model", "default", &_sg_cfg_cb__vm_model, description);
 
-    simgrid::config::bindFlag(sg_tcp_gamma = 4194304.0,
-      { "network/TCP-gamma", "network/TCP_gamma" },
+    sg_tcp_gamma = 4194304.0;
+    simgrid::config::bindFlag(sg_tcp_gamma, { "network/TCP-gamma", "network/TCP_gamma" },
       "Size of the biggest TCP window (cat /proc/sys/net/ipv4/tcp_[rw]mem for recv/send window; Use the last given value, which is the max window size)");
-    simgrid::config::bindFlag(sg_surf_precision = 0.00001,
-      "surf/precision",
+
+    sg_surf_precision = 0.00001;
+    simgrid::config::bindFlag(sg_surf_precision, "surf/precision",
       "Numerical precision used when updating simulation times (in seconds)");
-    simgrid::config::bindFlag(sg_maxmin_precision = 0.00001,
-      "maxmin/precision",
+
+    sg_maxmin_precision = 0.00001;
+    simgrid::config::bindFlag(sg_maxmin_precision, "maxmin/precision",
       "Numerical precision used when computing resource sharing (in ops/sec or bytes/sec)");
 
+    sg_concurrency_limit = 100;
+    simgrid::config::bindFlag(sg_concurrency_limit, "maxmin/concurrency_limit",
+      "Maximum number of concurrent variables in the maxmim system. Also limits the number of processes on each host, at higher level");
+
     /* The parameters of network models */
 
     // real default for "network/sender-gap" is set in network_smpi.cpp:
-    simgrid::config::bindFlag(sg_sender_gap = NAN,
-      { "network/sender-gap", "network/sender_gap" },
+    sg_sender_gap = NAN;
+    simgrid::config::bindFlag(sg_sender_gap, { "network/sender-gap", "network/sender_gap" },
       "Minimum gap between two overlapping sends");
-    simgrid::config::bindFlag(sg_latency_factor = 1.0,
-      { "network/latency-factor", "network/latency_factor" },
+
+    sg_latency_factor = 1.0;
+    simgrid::config::bindFlag(sg_latency_factor, { "network/latency-factor", "network/latency_factor" },
       "Correction factor to apply to the provided latency (default value set by network model)");
-    simgrid::config::bindFlag(sg_bandwidth_factor = 1.0,
-      { "network/bandwidth-factor", "network/bandwidth_factor" },
+
+    sg_bandwidth_factor = 1.0;
+    simgrid::config::bindFlag(sg_bandwidth_factor, { "network/bandwidth-factor", "network/bandwidth_factor" },
       "Correction factor to apply to the provided bandwidth (default value set by network model)");
+
     // real default for "network/weight-S" is set in network_*.cpp:
-    simgrid::config::bindFlag(sg_weight_S_parameter = NAN,
-      { "network/weight-S", "network/weight_S" },
+    sg_weight_S_parameter = NAN;
+    simgrid::config::bindFlag(sg_weight_S_parameter, { "network/weight-S", "network/weight_S" },
       "Correction factor to apply to the weight of competing streams (default value set by network model)");
 
     /* Inclusion path */
@@ -450,10 +460,10 @@ void sg_config_init(int *argc, char **argv)
         }
       });
 
-    xbt_cfg_register_boolean("cpu/maxmin-selective-update", "no", NULL,
+    xbt_cfg_register_boolean("cpu/maxmin-selective-update", "no", nullptr,
         "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)");
     xbt_cfg_register_alias("cpu/maxmin-selective-update","cpu/maxmin_selective_update");
-    xbt_cfg_register_boolean("network/maxmin-selective-update", "no", NULL,
+    xbt_cfg_register_boolean("network/maxmin-selective-update", "no", nullptr,
         "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)");
     xbt_cfg_register_alias("network/maxmin-selective-update","network/maxmin_selective_update");
     /* Replay (this part is enabled even if MC it disabled) */
@@ -543,58 +553,58 @@ void sg_config_init(int *argc, char **argv)
     //For smpi/bw_factor and smpi/lat_factor
     // SMPI model can be used without enable_smpi, so keep this out of the ifdef.
     xbt_cfg_register_string("smpi/bw-factor",
-        "65472:0.940694;15424:0.697866;9376:0.58729;5776:1.08739;3484:0.77493;1426:0.608902;732:0.341987;257:0.338112;0:0.812084", NULL,
+        "65472:0.940694;15424:0.697866;9376:0.58729;5776:1.08739;3484:0.77493;1426:0.608902;732:0.341987;257:0.338112;0:0.812084", nullptr,
         "Bandwidth factors for smpi. Format: 'threshold0:value0;threshold1:value1;...;thresholdN:valueN', meaning if(size >=thresholdN ) return valueN.");
     xbt_cfg_register_alias("smpi/bw-factor","smpi/bw_factor");
 
     xbt_cfg_register_string("smpi/lat-factor",
-        "65472:11.6436;15424:3.48845;9376:2.59299;5776:2.18796;3484:1.88101;1426:1.61075;732:1.9503;257:1.95341;0:2.01467", NULL, "Latency factors for smpi.");
+        "65472:11.6436;15424:3.48845;9376:2.59299;5776:2.18796;3484:1.88101;1426:1.61075;732:1.9503;257:1.95341;0:2.01467", nullptr, "Latency factors for smpi.");
     xbt_cfg_register_alias("smpi/lat-factor","smpi/lat_factor");
     
-    xbt_cfg_register_string("smpi/IB-penalty-factors", "0.965;0.925;1.35", NULL,
+    xbt_cfg_register_string("smpi/IB-penalty-factors", "0.965;0.925;1.35", nullptr,
         "Correction factor to communications using Infiniband model with contention (default value based on Stampede cluster profiling)");
     xbt_cfg_register_alias("smpi/IB-penalty-factors","smpi/IB_penalty_factors");
     
 #if HAVE_SMPI
-    xbt_cfg_register_double("smpi/running-power", 20000.0, NULL, "Power of the host running the simulation (in flop/s). Used to bench the operations.");
+    xbt_cfg_register_double("smpi/running-power", 20000.0, nullptr, "Power of the host running the simulation (in flop/s). Used to bench the operations.");
     xbt_cfg_register_alias("smpi/running-power","smpi/running_power");
 
-    xbt_cfg_register_boolean("smpi/display-timing", "no", NULL, "Whether we should display the timing after simulation.");
+    xbt_cfg_register_boolean("smpi/display-timing", "no", nullptr, "Whether we should display the timing after simulation.");
     xbt_cfg_register_alias("smpi/display-timing", "smpi/display_timing");
 
-    xbt_cfg_register_boolean("smpi/simulate-computation", "yes", NULL, "Whether the computational part of the simulated application should be simulated.");
+    xbt_cfg_register_boolean("smpi/simulate-computation", "yes", nullptr, "Whether the computational part of the simulated application should be simulated.");
     xbt_cfg_register_alias("smpi/simulate-computation","smpi/simulate_computation");
 
-    xbt_cfg_register_boolean("smpi/use-shared-malloc", "yes", NULL, "Whether SMPI_SHARED_MALLOC is enabled. Disable it for debugging purposes.");
+    xbt_cfg_register_boolean("smpi/use-shared-malloc", "yes", nullptr, "Whether SMPI_SHARED_MALLOC is enabled. Disable it for debugging purposes.");
     xbt_cfg_register_alias("smpi/use-shared-malloc", "smpi/use_shared_malloc");
 
-    xbt_cfg_register_double("smpi/cpu-threshold", 1e-6, NULL, "Minimal computation time (in seconds) not discarded, or -1 for infinity.");
+    xbt_cfg_register_double("smpi/cpu-threshold", 1e-6, nullptr, "Minimal computation time (in seconds) not discarded, or -1 for infinity.");
     xbt_cfg_register_alias("smpi/cpu-threshold", "smpi/cpu_threshold");
 
-    xbt_cfg_register_int("smpi/async-small-thresh", 0, NULL,
+    xbt_cfg_register_int("smpi/async-small-thresh", 0, nullptr,
         "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver");
     xbt_cfg_register_alias("smpi/async-small-thresh","smpi/async_small_thresh");
     xbt_cfg_register_alias("smpi/async-small-thresh","smpi/async_small_thres");
 
-    xbt_cfg_register_boolean("smpi/trace-call-location", "no", NULL, "Should filename and linenumber of MPI calls be traced?");
+    xbt_cfg_register_boolean("smpi/trace-call-location", "no", nullptr, "Should filename and linenumber of MPI calls be traced?");
 
-    xbt_cfg_register_int("smpi/send-is-detached-thresh", 65536, NULL,
+    xbt_cfg_register_int("smpi/send-is-detached-thresh", 65536, nullptr,
         "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend");
     xbt_cfg_register_alias("smpi/send-is-detached-thresh","smpi/send_is_detached_thresh");
     xbt_cfg_register_alias("smpi/send-is-detached-thresh","smpi/send_is_detached_thres");
 
-    xbt_cfg_register_boolean("smpi/privatize-global-variables", "no", NULL, "Whether we should privatize global variable at runtime.");
+    xbt_cfg_register_boolean("smpi/privatize-global-variables", "no", nullptr, "Whether we should privatize global variable at runtime.");
     xbt_cfg_register_alias("smpi/privatize-global-variables", "smpi/privatize_global_variables");
 
 #if HAVE_PAPI
-    xbt_cfg_register_string("smpi/papi-events", nullptr, NULL, "This switch enables tracking the specified counters with PAPI");
+    xbt_cfg_register_string("smpi/papi-events", nullptr, nullptr, "This switch enables tracking the specified counters with PAPI");
 #endif
-    xbt_cfg_register_string("smpi/comp-adjustment-file", nullptr, NULL, "A file containing speedups or slowdowns for some parts of the code.");
-    xbt_cfg_register_string("smpi/os", "1:0:0:0:0", NULL,  "Small messages timings (MPI_Send minimum time for small messages)");
-    xbt_cfg_register_string("smpi/ois", "1:0:0:0:0", NULL, "Small messages timings (MPI_Isend minimum time for small messages)");
-    xbt_cfg_register_string("smpi/or", "1:0:0:0:0", NULL,  "Small messages timings (MPI_Recv minimum time for small messages)");
+    xbt_cfg_register_string("smpi/comp-adjustment-file", nullptr, nullptr, "A file containing speedups or slowdowns for some parts of the code.");
+    xbt_cfg_register_string("smpi/os", "0:0:0:0:0", nullptr,  "Small messages timings (MPI_Send minimum time for small messages)");
+    xbt_cfg_register_string("smpi/ois", "0:0:0:0:0", nullptr, "Small messages timings (MPI_Isend minimum time for small messages)");
+    xbt_cfg_register_string("smpi/or", "0:0:0:0:0", nullptr,  "Small messages timings (MPI_Recv minimum time for small messages)");
 
-    xbt_cfg_register_string("smpi/coll-selector", "default", NULL, "Which collective selector to use");
+    xbt_cfg_register_string("smpi/coll-selector", "default", nullptr, "Which collective selector to use");
     xbt_cfg_register_alias("smpi/coll-selector","smpi/coll_selector");
     xbt_cfg_register_string("smpi/gather",        nullptr, &_check_coll_gather, "Which collective to use for gather");
     xbt_cfg_register_string("smpi/allgather",     nullptr, &_check_coll_allgather, "Which collective to use for allgather");
@@ -610,7 +620,15 @@ void sg_config_init(int *argc, char **argv)
     xbt_cfg_register_string("smpi/reduce",        nullptr, &_check_coll_reduce, "Which collective to use for reduce");
 #endif // HAVE_SMPI
 
-    xbt_cfg_register_boolean("exception/cutpath", "no", NULL,
+    /* Storage */
+
+    sg_storage_max_file_descriptors = 1024;
+    simgrid::config::bindFlag(sg_storage_max_file_descriptors, "storage/max_file_descriptors",
+      "Maximum number of concurrently opened files per host. Default is 1024");
+
+    /* Others */
+
+    xbt_cfg_register_boolean("exception/cutpath", "no", nullptr,
         "Whether to cut all path information from call traces, used e.g. in exceptions.");
 
     xbt_cfg_register_boolean("clean-atexit", "yes", _sg_cfg_cb_clean_atexit,