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align doc and code on a more sensible value
[simgrid.git]
/
src
/
smpi
/
internals
/
smpi_bench.cpp
diff --git
a/src/smpi/internals/smpi_bench.cpp
b/src/smpi/internals/smpi_bench.cpp
index
bc55483
..
9793546
100644
(file)
--- a/
src/smpi/internals/smpi_bench.cpp
+++ b/
src/smpi/internals/smpi_bench.cpp
@@
-28,6
+28,11
@@
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_bench, smpi, "Logging specific to SMPI (benchmarking)");
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(), gettimeofday() and clock_gettime()",
+ 1e-8 /* Documented to be 10 ns */);
+
double smpi_cpu_threshold = -1;
double smpi_host_speed;
double smpi_cpu_threshold = -1;
double smpi_host_speed;
@@
-35,6
+40,7
@@
SharedMallocType smpi_cfg_shared_malloc = SharedMallocType::GLOBAL;
double smpi_total_benched_time = 0;
extern "C" XBT_PUBLIC void smpi_execute_flops_(double* flops);
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);
void smpi_execute_flops_(double *flops)
{
smpi_execute_flops(*flops);
@@
-49,10
+55,11
@@
void smpi_execute_(double *duration)
void smpi_execute_flops(double flops) {
xbt_assert(flops >= 0, "You're trying to execute a negative amount of flops (%f)!", flops);
XBT_DEBUG("Handle real computation time: %f flops", flops);
void smpi_execute_flops(double flops) {
xbt_assert(flops >= 0, "You're trying to execute a negative amount of flops (%f)!", flops);
XBT_DEBUG("Handle real computation time: %f flops", flops);
- simgrid::s4u::ExecPtr e = simgrid::s4u::this_actor::exec_init(flops)->set_name("computation");
- e->start();
- e->set_tracing_category(TRACE_internal_smpi_get_category());
- e->wait();
+ simgrid::s4u::this_actor::exec_init(flops)
+ ->set_name("computation")
+ ->set_tracing_category(TRACE_internal_smpi_get_category())
+ ->start()
+ ->wait();
smpi_switch_data_segment(simgrid::s4u::Actor::self());
}
smpi_switch_data_segment(simgrid::s4u::Actor::self());
}
@@
-176,7
+183,7
@@
void smpi_bench_end()
smpi_total_benched_time += xbt_os_timer_elapsed(timer);
}
smpi_total_benched_time += xbt_os_timer_elapsed(timer);
}
-/* Private sleep function used by smpi_sleep()
and smpi_usleep()
*/
+/* Private sleep function used by smpi_sleep()
, smpi_usleep() and friends
*/
static unsigned int private_sleep(double secs)
{
smpi_bench_end();
static unsigned int private_sleep(double secs)
{
smpi_bench_end();
@@
-231,6
+238,8
@@
int smpi_gettimeofday(struct timeval* tv, struct timezone* tz)
tv->tv_usec = static_cast<suseconds_t>((now - tv->tv_sec) * 1e6);
#endif
}
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;
}
smpi_bench_begin();
return 0;
}
@@
-247,11
+256,28
@@
int smpi_clock_gettime(clockid_t clk_id, struct timespec* tp)
tp->tv_sec = static_cast<time_t>(now);
tp->tv_nsec = static_cast<long int>((now - tp->tv_sec) * 1e9);
}
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
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 ()
{
extern double sg_surf_precision;
unsigned long long smpi_rastro_resolution ()
{