def save_wavelet(q, path):
    file = tables.open_file(path, 'w')
    while True:
        val = q.get()
        if val is None:
            break
        W, chan, mz = val
        # Guardando...
        q.task_done()

    print 'Flushing wavelets and ready to close.'
    q.task_done()
    file.close()

def generate_wavelet(chan):
    q.put((wavel, chan, mz))


q = multiprocessing.JoinableQueue()
saver = multiprocessing.Process(target=save_wavelet, args=(q, path))
saver.start()
Parallel(n_jobs=-1, verbose=3)(delayed(generate_wavelet)(channel)
                                   for channel in profiles)

print 'Remaining', q.qsize(), '.',
q.put(None)
print 'Waiting for saving.'
saver.join()
saver.terminate()