1 files changed, 93 insertions, 0 deletions
diff --git a/tools/sweep_gr_sims.py b/tools/sweep_gr_sims.py
new file mode 100644
index 0000000..661af56
--- /dev/null
+++ b/tools/sweep_gr_sims.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+import subprocess
+import time
+import struct
+import random
+import math
+import statistics
+import tempfile
+import itertools
+from collections import defaultdict
+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
+
+
+def run_simulation(
+        duration = SIMULATION_DURATION,
+        simulations = SIMS,
+        forklimit = MAX_CONCURRENT_PROCESSES,
+        amplitudes:'list(millihertz)' = AMPLITUDES_MILLIHERTZ, 
+        terminate_timeout:'s' = 5.0,
+        communicate_timeout:'s' = 10.0,
+        repeat_runs = 1,
+        shuffle = False,
+        tqdm = tqdm.tqdm
+        ):
+    with tempfile.TemporaryDirectory() as tmpdir:
+
+        jobs = list(enumerate(itertools.product(simulations, amplitudes * repeat_runs)))
+        if shuffle:
+            random.shuffle(jobs)
+        nchunks = int(math.ceil(len(jobs)/forklimit))
+
+        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: defaultdict(lambda: ([], [])) for sim in simulations }
+        with tqdm(total = nchunks * duration, bar_format='{l_bar}{bar}| {elapsed}<{remaining}') as tq:
+            tq.write(f'Will launch {len(jobs)} simulation jobs in {nchunks} batches of {forklimit}')
+            for n, i in enumerate(range(0, len(jobs), forklimit)):
+                batch = jobs[i:][:forklimit]
+                tq.write(f'Starting batch {n+1}/{nchunks}...')
+                processes = list(start_processes(batch))
+                tq.write('done.')
+
+                tq.write('Waiting for simulation:')
+                for _ in range(100):
+                    time.sleep(duration/100)
+                    tq.update(duration/100)
+
+                tq.write('Terminating processes...')
+                for proc, *_ in processes:
+                    proc.communicate(b'\n', timeout=communicate_timeout)
+
+                for proc, *_ in processes:
+                    proc.wait(terminate_timeout)
+                tq.write('done.')
+
+                tq.write('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:])
+
+                    bers, stdevs = results[sim][ampl_mhz]
+                    bers.append(ber)
+                    stdevs.append(stdev)
+
+    return results
+
+if __name__ == '__main__':
+    print(run_simulation())