XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_bench, smpi, "Logging specific to SMPI (benchmarking)");
-static simgrid::config::Flag<double> smpi_wtime_sleep("smpi/wtime", "Minimum time to inject inside a call to MPI_Wtime",
- 0.0);
+static simgrid::config::Flag<double>
+ smpi_wtime_sleep("smpi/wtime",
+ "Minimum time to inject inside a call to MPI_Wtime(), gettimeofday() and clock_gettime()",
+ 1e-8 /* Documented to be 10 ns */);
double smpi_cpu_threshold = -1;
double smpi_host_speed;
double smpi_total_benched_time = 0;
extern "C" XBT_PUBLIC void smpi_execute_flops_(double* flops);
+
void smpi_execute_flops_(double *flops)
{
smpi_execute_flops(*flops);
tv->tv_usec = static_cast<suseconds_t>((now - tv->tv_sec) * 1e6);
#endif
}
+ if (smpi_wtime_sleep > 0)
+ simcall_process_sleep(smpi_wtime_sleep);
smpi_bench_begin();
return 0;
}
tp->tv_sec = static_cast<time_t>(now);
tp->tv_nsec = static_cast<long int>((now - tp->tv_sec) * 1e9);
}
+ if (smpi_wtime_sleep > 0)
+ simcall_process_sleep(smpi_wtime_sleep);
smpi_bench_begin();
return 0;
}
#endif
+double smpi_mpi_wtime()
+{
+ double time;
+ if (smpi_process()->initialized() && not smpi_process()->finalized() && not smpi_process()->sampling()) {
+ smpi_bench_end();
+ time = SIMIX_get_clock();
+ if (smpi_wtime_sleep > 0)
+ simcall_process_sleep(smpi_wtime_sleep);
+ smpi_bench_begin();
+ } else {
+ time = SIMIX_get_clock();
+ }
+ return time;
+}
+
extern double sg_surf_precision;
unsigned long long smpi_rastro_resolution ()
{
return static_cast<unsigned long long>(sec) * smpi_rastro_resolution() + pre;
}
-double smpi_mpi_wtime()
-{
- double time;
- if (smpi_process()->initialized() && not smpi_process()->finalized() && not smpi_process()->sampling()) {
- smpi_bench_end();
- time = SIMIX_get_clock();
- // to avoid deadlocks if used as a break condition, such as
- // while (MPI_Wtime(...) < time_limit) {
- // ....
- // }
- // because the time will not normally advance when only calls to MPI_Wtime
- // are made -> deadlock (MPI_Wtime never reaches the time limit)
- if (smpi_wtime_sleep > 0)
- simcall_process_sleep(smpi_wtime_sleep);
- smpi_bench_begin();
- } else {
- time = SIMIX_get_clock();
- }
- return time;
-}
-
/* ****************************** Functions related to the SMPI_SAMPLE_ macros ************************************/
namespace {
class SampleLocation : public std::string {