timing_test.pl
a6b7299ddc2blammps-icms

timing_test.pl
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			#!/usr/bin/perl

			# The range of grid sizes to consider
			@range=(10..40);

			# The number of trials to consider. If this is set to one, the time for a
			# single trial will be outputted. For higher values, the mean of all the trials
			# will be outputted, along with the standard deviation.
			$tries=3;

			# The flags to pass for code optimization
			$opt="-O3";

			foreach $r (@range) {

			# Compile the code with the current grid size
			system "g++ $opt -I../../src -DNNN=$r -o timing_test "
			."-L../../src timing_test.cc -lvoro++";

			# Carry out the trials for this grid size
			$st=$stt=0;
			foreach $t (1..$tries) {

			# Run the code, and output the timing information to the
			# "time_temp" file.
			system "./timing_test >time_temp";

			# Read the "time_temp" file to find the duration of the run
			open F,"time_temp" or die "Can't open timing file: $!";
			($t)=split ' ',<F>;
			$st+=$t;$stt+=$t*$t;
			close F;
			}

			# Compute the mean and variance and print to standard output
			$st/=$tries;
			$stt=$stt/$tries-$st*$st;$stt=$stt>0?sqrt($stt):0;
			print "$r $st $stt\n";
			}

			# Delete the temporary timing file
			unlink "time_temp";