def METHOD_NAME(log_file_name):
    # open log file
    if os.path.exists(log_file_name):
        os.remove(log_file_name)
    with open(log_file_name, 'w') as logfile:
        machine_name = "None"
        if "-machine" in sys.argv:
            machine_name = sys.argv[sys.argv.index("-machine") + 1]
        else:
            logfile.write("\n**** Error, machine name argument required (-machine my_machine_name)\n")
            result = 1
        # remove old output files, if any
        files_to_remove = glob.glob(base_name+".e*")
        files_to_remove.append('*.out')
        files_to_remove.append('*.nem')
        files_to_remove.append('*.pex')
        for file in os.listdir(os.getcwd()):
            if file in files_to_remove:
                os.remove(file)
        # run Peridigm
        command = ["mpiexec", "-np", "4", "../../../src/Peridigm", base_name+".yaml"]
        p = Popen(command, stdout=PIPE)
        return_code = p.wait()
        if return_code != 0:
            result = return_code
        out, err = p.communicate()
        if out != None:
            out = out.decode()
            logfile.write(str(out))
        if err != None:
            err = err.decode()
            logfile.write(str(err))
        logfile.flush()
        # concatenate output files
        command = ["../../../scripts/epu", "-p", "4", base_name]
        p = Popen(command, stdout=logfile, stderr=logfile)
        return_code = p.wait()
        if return_code != 0:
            result = return_code
        # compare performance statistics against gold statistics
        # performance data for current run
        stdout_vals = out.split()
        wallclock_time_string = ""
        for i in range(len(stdout_vals)):
            if stdout_vals[i] == "Total":
                wallclock_time_string = stdout_vals[i+2]
        wallclock_time = 0.0
        try:
            wallclock_time = float(wallclock_time_string)
        except ValueError:
            print("Error converting wallclock time string to a floating-point value")
        # gold standard performance data for this machine
        perf_gold_file = open(base_name+".perf")
        buff = read_line(perf_gold_file)
        gold_perf_data = []
        while buff != None:
            vals = buff.split()
            if machine_name in vals:
                gold_perf_data = vals
            buff = read_line(perf_gold_file)
        if gold_perf_data == []:
            logfile.write("\n**** Error, reference (gold) performance data not found for machine " + machine_name + "\n")
            sys.exit(1)
        gold_num_proc = int(gold_perf_data[1])
        gold_wallclock_time = float(gold_perf_data[2])
        gold_wallclock_time_tolerance = float(gold_perf_data[3])
        if(wallclock_time > gold_wallclock_time + gold_wallclock_time_tolerance):
            result = 1
            logfile.write("\n**** PERFORMANCE TEST FAILED:  wallclock time exceeded benchmark value plus tolerance.")
        elif(wallclock_time < gold_wallclock_time - gold_wallclock_time_tolerance):
            result = 1
            logfile.write("\n**** PERFORMANCE TEST FAILED:  wallclock time was LESS than benchmark value minus tolerance (code is running TOO FAST!).")
        else:
            logfile.write("\n**** PERFORMANCE TEST PASSED:  wallclock time was within tolerance.")
        logfile.write("\n****                           wallclock time  = " +  str(wallclock_time))
        logfile.write("\n****                           benchmark value = " +  str(gold_wallclock_time))
        logfile.write("\n****                           tolerance       = " +  str(gold_wallclock_time_tolerance) +"\n")
        logfile.flush()
        # compare output against gold file only if the gold file is present
        gold_file_name = base_name + "_gold.e"
        if os.path.exists(gold_file_name):
            command = ["../../../scripts/exodiff", \
                       "-stat", \
                       "-f", \
                       base_name+".comp", \
                       base_name+".e", \
                       base_name+"_gold.e"]
            p = Popen(command, stdout=logfile, stderr=logfile)
            return_code = p.wait()
            if return_code != 0:
                result = return_code
        else:
            logfile.write("\n**** Gold file " + gold_file_name + " not found, skipping exodiff.\n\n")
    return result