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#!/usr/bin/env python
# Simple script to run another command a certain number of times,
# recording how long each run took, and writing the results out to a file.
import os
import os.path
import re
import string
import sys
import time
__author__ = "Peter Maxwell and Gavin Huttley"
__copyright__ = "Copyright 2007-2012, The Cogent Project"
__credits__ = ["Peter Maxwell", "Gavin Huttley", "Edward Lang"]
__license__ = "GPL"
__version__ = "1.5.3"
__maintainer__ = "Gavin Huttley"
__email__ = "gavin.huttley@anu.edu.au"
__status__ = "Production"
# Values that affect the running of the program.
minimum_accepted_time = 2
iterations = int(sys.argv[1])
args = sys.argv[2:]
script_re = re.compile(".py$")
type = ""
for i in range(len(args)):
if script_re.search(args[i], 1):
script = args[i][0:string.index(args[i], '.')]
if args[i] == "mpirun":
type = "parallel"
if not type:
type = "serial"
output = "timing/" + script + "-" + str(int(time.time())) + "-" + type
def usage():
pass
def standard_dev(numbers = [], mean = 1):
import math
sum = 0
for i in range(len(numbers)):
sum = sum + math.pow(numbers[i] - mean, 2)
sigma = math.sqrt(sum / (len(numbers) - 1))
return sigma
def main():
if args:
command = ' '.join(map(str, args))
else:
usage()
sys.exit()
total_time = 0.0
times = []
print 'Running "%s" %d times...' % (command, iterations)
i = 0
attempt = 0
while i < iterations:
start_time = time.time()
os.system(command + " > " + output + "." + str(i))
end_time = time.time() - start_time
if end_time > minimum_accepted_time:
times.append(end_time)
total_time = total_time + end_time
print "Time for run %d: %.3f seconds" % (i, end_time)
i = i + 1
attempt = 0
else:
print "Discarding probably bogus time: %.3f seconds" % end_time
attempt = attempt + 1
if attempt == 5:
print "Aborting early due to multiple errors"
sys.exit(3)
times.sort()
mean = total_time / len(times)
sd = standard_dev(times, mean)
print ""
print "Fastest time : %.3f" % times[0]
print "Slowest time : %.3f" % times[len(times) - 1]
print "Mean : %.3f" % mean
print "Standard dev : %.3f" % sd
print "Total time : %.3f" % total_time
print ""
corrected_total = 0.0
corrected_times = []
for i in range(len(times)):
if abs(mean - times[i]) < sd:
corrected_times.append(times[i])
corrected_total = corrected_total + times[i]
else:
print "Discarding value '%.3f'" % times[i]
if len(times) != len(corrected_times):
corrected_mean = corrected_total / len(corrected_times)
corrected_sd = standard_dev(corrected_times, corrected_mean)
print ""
print "CORRECTED RESULTS"
print "Fastest time : %.3f" % corrected_times[0]
print "Slowest time : %.3f" % corrected_times[len(corrected_times)-1]
print "Mean : %.3f" % corrected_mean
print "Standard dev : %.3f" % corrected_sd
if __name__ == "__main__":
main()
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