| 1 | #!/bin/env python |
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| 2 | |
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| 3 | """Testlet to run the LatencyBandwidth test.""" |
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| 4 | |
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| 5 | import os |
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| 6 | import time |
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| 7 | import test_utils as util |
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| 8 | |
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| 9 | Processor_Numbers = [2, 4, 8, 16] |
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| 10 | |
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| 11 | name = 'Running latency/bandwidth test' |
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| 12 | |
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| 13 | def test(logfile): |
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| 14 | result = True |
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| 15 | |
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| 16 | (cluster, domain) = util.get_hostname() |
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| 17 | |
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| 18 | # get python to run |
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| 19 | python_env_var = os.getenv('PYTHON') |
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| 20 | |
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| 21 | # compile C code |
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| 22 | obj_file = 'ctiming_%s' % cluster |
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| 23 | cmd = ('mpicc ctiming.c -lm -o %s' % obj_file) |
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| 24 | util.log_print_nl(logfile, 'Compiling ctiming.c:') |
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| 25 | util.log_print_nl(logfile,cmd) |
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| 26 | (_, fd) = os.popen4(cmd) |
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| 27 | output = fd.read() |
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| 28 | status = fd.close() |
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| 29 | if status: |
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| 30 | util.log_print_nl(logfile, 'ERRORS COMPILING') |
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| 31 | util.log_print(logfile, output) |
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| 32 | return False |
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| 33 | |
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| 34 | util.log_print_nl(logfile) |
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| 35 | |
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| 36 | # run the tests |
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| 37 | results = [] |
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| 38 | #machines_file = os.path.join('~', '.machines_%s' % cluster) |
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| 39 | for num_procs in Processor_Numbers: |
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| 40 | cmd = ('mpirun -nolocal -np %2d -hostfile %s %s' |
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| 41 | % (num_procs, util.machines_file, obj_file)) |
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| 42 | util.log_print(logfile, cmd + ' ...') |
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| 43 | (_, fd) = os.popen4(cmd) |
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| 44 | output = fd.readlines() |
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| 45 | status = fd.close() |
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| 46 | if status: |
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| 47 | util.log_print_nl(logfile, 'ERRORS') |
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| 48 | util.log_print(logfile, '\n'.join(output)) |
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| 49 | return False |
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| 50 | |
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| 51 | estimated_bandwidth = None |
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| 52 | estimated_latency = None |
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| 53 | for line in output: |
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| 54 | if line.startswith('Estimated bandwith'): |
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| 55 | (_, estimated_bandwidth) = line.split(': ', 1) |
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| 56 | estimated_bandwidth = estimated_bandwidth.strip() |
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| 57 | (estimated_bandwidth, _) = estimated_bandwidth.split(' ', 1) |
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| 58 | if line.startswith('Estimated latency'): |
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| 59 | (_, estimated_latency) = line.split(': ', 1) |
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| 60 | estimated_latency = estimated_latency.strip() |
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| 61 | (estimated_latency, _) = estimated_latency.split(' ', 1) |
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| 62 | |
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| 63 | if estimated_bandwidth is None or estimated_latency is None: |
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| 64 | util.log_print_nl(logfile, 'ERRORS') |
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| 65 | util.log_print(logfile, '\n'.join(output)) |
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| 66 | return False |
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| 67 | |
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| 68 | results.append((num_procs, float(estimated_bandwidth), int(estimated_latency))) |
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| 69 | util.log_print_nl(logfile, 'done') |
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| 70 | |
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| 71 | # interpret the results |
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| 72 | util.log_print(logfile, '\nResults of latency/bandwidth test on %s\n' % cluster) |
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| 73 | util.log_print(logfile, '%s\t%s\t%s\n' % ('#procs', 'b/width', 'latency')) |
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| 74 | |
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| 75 | for (num_processors, estimated_bandwidth, estimated_latency) in results: |
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| 76 | util.log_print(logfile, '%d\t%.1f\t%d\n' |
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| 77 | % (num_processors, estimated_bandwidth, estimated_latency)) |
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| 78 | |
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| 79 | os.remove(obj_file) |
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| 80 | |
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| 81 | return result |
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| 82 | |
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| 83 | |
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| 84 | if __name__ == '__main__': |
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| 85 | import sys |
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| 86 | |
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| 87 | logfile = 'test.log' |
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| 88 | if len(sys.argv) > 1: |
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| 89 | logfile = sys.argv[1] |
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| 90 | |
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| 91 | try: |
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| 92 | os.remove(logfile) |
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| 93 | except: |
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| 94 | pass |
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| 95 | |
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| 96 | if not test(logfile): |
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| 97 | sys.exit(10) |
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| 98 | |
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| 99 | sys.exit(0) |
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