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#!/usr/bin/env python3
import subprocess
import time
import struct
import math
import statistics
import tempfile
import itertools
from os import path
import tqdm
SIMS = [ 'dec_proto_am_ber_top.py',
'dec_proto_am_dc_ber_top.py',
'dec_proto_fm_ber_top.py',
]
E12_SERIES = [1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2]
AMPLITUDES_MILLIHERTZ = [ x*y for y in [1, 10, 100] for x in E12_SERIES ]
SIMULATION_DURATION = 30.0 # seconds realtime
MAX_CONCURRENT_PROCESSES = 8
with tempfile.TemporaryDirectory() as tmpdir:
jobs = list(enumerate(itertools.product(SIMS, AMPLITUDES_MILLIHERTZ)))
print(f'Will launch {len(jobs)} simulation jobs in {math.ceil(len(jobs)/MAX_CONCURRENT_PROCESSES):.0f} batches of {MAX_CONCURRENT_PROCESSES}')
def start_processes(jobs):
for i, (sim, ampl_mhz) in jobs:
berfile = path.join(tmpdir, f'berfile_{i}')
proc = subprocess.Popen(['/usr/bin/python2', sim,
'--signal-strength', str(ampl_mhz),
'--ber-file', berfile],
stdin=subprocess.PIPE, stdout=subprocess.DEVNULL)
yield proc, sim, ampl_mhz, berfile
results = { sim: ([], [], []) for sim in SIMS }
for n, i in enumerate(range(0, len(jobs), MAX_CONCURRENT_PROCESSES)):
batch = jobs[i:][:MAX_CONCURRENT_PROCESSES]
print(f'Starting batch {n}... ', end='')
processes = list(start_processes(batch))
print('done.')
print('Waiting for simulation:')
for _ in tqdm.trange(1000):
time.sleep(SIMULATION_DURATION/1000)
print('Terminating processes...', end='')
for proc, *_ in processes:
proc.communicate(b'\n', timeout=10)
for proc, *_ in processes:
proc.wait(5)
print('done.')
print('Processing simulation results')
for _proc, sim, ampl_mhz, berfile in processes:
with open(berfile, 'rb') as f:
data = f.read()
floats = struct.unpack(f'{len(data)//4}f', data)
ber = statistics.mean(floats[-256:])
stdev = statistics.stdev(floats[-256:])
amplitudes, bers, stdevs = results[sim]
amplitudes.append(ampl_mhz)
bers.append(ber)
stdevs.append(stdev)
print(results)
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