avoid not only division by zero, but also computing variance for short runs... (61cff854) · Commits · 郑智淋 / lammps

src/finish.cpp

+2 −2

Original line number	Diff line number	Diff line
		@@ -912,7 +912,7 @@ void mpi_timings(const char label, Timer t, enum Timer::ttype tt,
		time_cpu = tmp/nprocs*100.0;

		// % variance from the average as measure of load imbalance
		if ((time > 0.0) && ((time_sq/time - time) > 1.0e-10))
		if ((time > 0.001) && ((time_sq/time - time) > 1.0e-10))
		time_sq = sqrt(time_sq/time - time)*100.0;
		else
		time_sq = 0.0;
		@@ -964,7 +964,7 @@ void omp_times(FixOMP fix, const char label, enum Timer::ttype which,
		time_std /= nthreads;
		time_total /= nthreads;

		if ((time_avg > 0.0) && ((time_std/time_avg -time_avg) > 1.0e-10))
		if ((time_avg > 0.001) && ((time_std/time_avg -time_avg) > 1.0e-10))
		time_std = sqrt(time_std/time_avg - time_avg)*100.0;
		else
		time_std = 0.0;