/* Don't forget to update the option description in smx_config when you change this */
s_surf_model_description_t surf_network_model_description[] = {
- {"Constant",
- "Simplistic network model where all communication take a constant time (one second)",
- surf_network_model_init_Constant},
- {"CM02",
- "Legacy network model with lmm_solve (slow-start and bottleneck sharing with small bandwidth poorly modeled).",
- surf_network_model_init_CM02},
{"LV08",
- "Realistic network model (slow-start modeled by multiplying latency by 10.4, bandwidth by .92 and bottleneck sharing uses a payload of S=8775 for evaluating RTT). Uses partial invalidation optimization of lmm system and a heap for action management by default (option --cfg=network/optim:Lazy)",
- surf_network_model_init_LegrandVelho},
- {"LV08_fullupdate",
- "Realistic network model (see LV08) [Deprecated. Use LV08 with option --cfg=network/optim:Full. The Full option updates all actions at every step, which may be useful for debug.]",
+ "Realistic network analytic model (slow-start modeled by multiplying latency by 10.4, bandwidth by .92; bottleneck sharing uses a payload of S=8775 for evaluating RTT). ",
surf_network_model_init_LegrandVelho},
+ {"Constant",
+ "Simplistic network model where all communication take a constant time (one second). This model provides the lowest realism, but is (marginally) faster.",
+ surf_network_model_init_Constant},
{"SMPI",
- "Realistic network model with lmm_solve specifically tailored for HPC setting (accurate modeling of slow start with correction factors on three intervals (< 1KiB, < 64 KiB, >= 64 KiB))",
+ "Realistic network model specifically tailored for HPC settings (accurate modeling of slow start with correction factors on three intervals: < 1KiB, < 64 KiB, >= 64 KiB)",
surf_network_model_init_SMPI},
+ {"CM02",
+ "Legacy network analytic model (Very similar to LV08, but without corrective factors. The timings of small messages are thus poorly modeled).",
+ surf_network_model_init_CM02},
#ifdef HAVE_GTNETS
{"GTNets",
- "Network Pseudo-model using the GTNets simulator instead of an analytic model",
+ "Network pseudo-model using the GTNets simulator instead of an analytic model",
surf_network_model_init_GTNETS},
#endif
#ifdef HAVE_NS3
{"NS3",
- "Use NS3 tcp model",
+ "Network pseudo-model using the NS3 tcp model instead of an analytic model",
surf_network_model_init_NS3},
#endif
{"Reno",
- "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info)",
+ "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
surf_network_model_init_Reno},
{"Reno2",
- "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info)",
+ "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
surf_network_model_init_Reno2},
{"Vegas",
- "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info)",
+ "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
surf_network_model_init_Vegas},
{NULL, NULL, NULL} /* this array must be NULL terminated */
};
s_surf_model_description_t surf_cpu_model_description[] = {
- {"Cas01_fullupdate", "CPU classical model time=size/power (Cas01). [Deprecated. Use Cas01 with option --cfg=cpu/optim:Full. The Full option updates all actions at every step, which may be useful for debug.]",
- surf_cpu_model_init_Cas01},
{"Cas01",
- "CPU classical model time=size/power. Default version uses partial invalidation optimization of lmm system and a heap for action management (default option is --cfg=cpu/optim:Lazy)",
+ "Simplistic CPU model (time=size/power).",
surf_cpu_model_init_Cas01},
- {"CpuTI",
- "CPU classical model time=size/power (Cas01). [Deprecated. Use Cas01 with option --cfg=cpu/optim:TI. The TI optimization is highly optimized when using traces]",
- surf_cpu_model_init_ti},
{NULL, NULL, NULL} /* this array must be NULL terminated */
};
s_surf_model_description_t surf_workstation_model_description[] = {
- {"current_default",
- "Curent default workstation model (may change with versions of SimGrid). Currently Cas01 and LV08 (with full duplex support) as CPU and Network",
+ {"default",
+ "Default workstation model. Currently, CPU:Cas01 and network:LV08 (with cross traffic enabled)",
surf_workstation_model_init_current_default},
- {"CLM03",
- "Default workstation model, using Cas01 and CM02 as CPU and Network",
- surf_workstation_model_init_CLM03},
{"compound",
- "Workstation model allowing you to use other network and CPU models",
+ "Workstation model that is automatically chosen if you change the network and CPU models",
surf_workstation_model_init_compound},
- {"ptask_L07", "Workstation model with better parallel task modeling",
+ {"ptask_L07", "Workstation model somehow similar to Cas01+CM02 but allowing parallel tasks",
surf_workstation_model_init_ptask_L07},
{NULL, NULL, NULL} /* this array must be NULL terminated */
};
"Lazy action management (partial invalidation in lmm + heap in action remaining).",
NULL},
{"TI",
- "Trace integration. Highly optimized mode for the Cas01 model when using availability traces.",
+ "Trace integration. Highly optimized mode when using availability traces (only available for the Cas01 CPU model for now).",
NULL},
{"Full",
"Full update of remaining and variables. Slow but may be useful when debugging.",
}
}
- XBT_DEBUG("Min for resources (except NS3) : %f", min);
+ XBT_DEBUG("Min for resources (remember that NS3 dont update that value) : %f", min);
XBT_DEBUG("Looking for next trace event");
min = model_next_action_end;
}
- if (next_event_date == -1.0) break;
+ if (next_event_date == -1.0) {
+ XBT_DEBUG("no next TRACE event. Stop searching for it");
+ break;
+ }
if ((min != -1.0) && (next_event_date > NOW + min)) break;
}
} while (1);
- /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
+ /* FIXME: Moved this test to here to avoid stopping simulation if there are actions running on cpus and all cpus are with availability = 0.
* This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
* The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
- if (min < 0.0)
+ if (min == -1.0) {
+ XBT_DEBUG("No next event at all. Bail out now.");
return -1.0;
+ }
XBT_DEBUG("Duration set to %f", min);
