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#!/usr/bin/env python
"""This launches an echoing rep socket device,
and runs a blocking numpy action. The rep socket should
remain responsive to pings during this time. Use heartbeater.py to
ping this heart, and see the responsiveness.
Authors
-------
* MinRK
"""
import time
import numpy
import zmq
from zmq import devices
ctx = zmq.Context()
dev = devices.ThreadDevice(zmq.FORWARDER, zmq.SUB, zmq.DEALER)
dev.setsockopt_in(zmq.SUBSCRIBE, "")
dev.connect_in('tcp://127.0.0.1:5555')
dev.connect_out('tcp://127.0.0.1:5556')
dev.start()
#wait for connections
time.sleep(1)
A = numpy.random.random((2**11,2**11))
print("starting blocking loop")
while True:
tic = time.time()
numpy.dot(A,A.transpose())
print("blocked for %.3f s"%(time.time()-tic))
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