[Multiprocessing-sig] stop and restart processes

[Shawn Gong]

Hi list,

My Linux server has 24 CPUs. When I multiprocess a large job with more than 800 runs (para_list has >800 entries), I run out memory. There could be a memory leak somewhere.

Is there a way to stop after running 10 processes on one CPU and restart, so that memory leak can be avoided?

thanks,
Shawn

Codes:
    args = [(arg1, arg2, ...) for arg1, arg2 in para_list]

    # run My_calculation asynchronously
    pool = multiprocessing.Pool(processes = cpu_used)
    results = [pool.apply_async(My_calculation, a) for a in args]
    
    # get the results: waits for each to finish and logs any errors
    for idx, r in enumerate(results):
        try:
            r.get()
        except:
            log.debug(traceback.format_exc())