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python Programming Glossary: pool.apply_asyncShared-memory objects in python multiprocessing http://stackoverflow.com/questions/10721915/shared-memory-objects-in-python-multiprocessing arr param # build array arr pool Pool processes 6 results pool.apply_async func arr param for param in all_params output res.get for res.. array time.time t pool Pool processes 6 t time.time res pool.apply_async f arr res.get print multiprocessing overhead time.time t output..
Asynchronous method call in Python? http://stackoverflow.com/questions/1239035/asynchronous-method-call-in-python pool Pool processes 1 # Start a worker processes. result pool.apply_async f 10 callback # Evaluate f 10 asynchronously calling callback..
Twisted network client with multiprocessing workers? http://stackoverflow.com/questions/1470850/twisted-network-client-with-multiprocessing-workers method and then work is delegated to the pool using pool.apply_async passing one of my plugin's process methods. So if I run the.. is never asked to do anything and the parent that called pool.apply_async just sits there waiting for the response to return. I'm sure..
Can't pickle <type 'instancemethod'> when using python's multiprocessing Pool.map() http://stackoverflow.com/questions/1816958/cant-pickle-type-instancemethod-when-using-pythons-multiprocessing-pool-ma x x def go pool multiprocessing.Pool processes 4 #result pool.apply_async self.f 10 #print result.get timeout 1 print pool.map f range.. def go self pool multiprocessing.Pool processes 4 #result pool.apply_async self.f 10 #print result.get timeout 1 print pool.map self.f..
Execute multiple threads concurrently http://stackoverflow.com/questions/18281434/execute-multiple-threads-concurrently results for filename in filenames results.append pool.apply_async export_data filename # wait until all threads finish while not..
python -> multiprocessing module http://stackoverflow.com/questions/3586723/python-multiprocessing-module # pool Pool processes 4 #Start worker processes # res pool.apply_async worker task_queue data_file # But I chose to do it like this..
how to get the return value from a thread in python? http://stackoverflow.com/questions/6893968/how-to-get-the-return-value-from-a-thread-in-python import ThreadPool pool ThreadPool processes 1 async_result pool.apply_async foo 'world' 'foo' # tuple of args for foo # do some other stuff..
Multiprocessing useless with urllib2? http://stackoverflow.com/questions/6905800/multiprocessing-useless-with-urllib2 '__main__' pool multiprocessing.Pool processes 4 result pool.apply_async getTweets i for i in urls i.get for i in result python multiprocessing..
Python multiprocessing.Pool: when to use apply, apply_async or map? http://stackoverflow.com/questions/8533318/python-multiprocessing-pool-when-to-use-apply-apply-async-or-map Thus pool.apply func args kwargs is equivalent to pool.apply_async func args kwargs .get . In contrast to Pool.apply the Pool.apply_async.. apply_async_with_callback pool mp.Pool for i in range 10 pool.apply_async foo_pool args i callback log_result pool.close pool.join print.. the results may not correspond to the order in which the pool.apply_async calls were made. So if you need to run a function in a separate..
Python multiprocessing pickling error http://stackoverflow.com/questions/8804830/python-multiprocessing-pickling-error g calls h which has a nested function i and I am calling pool.apply_async f . f g h are all defined at the top level. I tried simpler.. Foo @staticmethod def work self pass pool mp.Pool foo Foo pool.apply_async foo.work pool.close pool.join yields an error almost identical.. the top level which calls foo.work def work foo foo.work pool.apply_async work args foo Notice that foo is pickable since Foo is defined..
How do I make processes able to write in an array of the main program? http://stackoverflow.com/questions/9742739/how-do-i-make-processes-able-to-write-in-an-array-of-the-main-program len m2 0 for i in range N for j in range M results.append pool.apply_async getProductElement m1 m2 i j Then fill the resulting matrix with..
Exception thrown in multiprocessing Pool not detected http://stackoverflow.com/questions/6728236/exception-thrown-in-multiprocessing-pool-not-detected def apply_async self func args kwds callback None return Pool.apply_async self LogExceptions func args kwds callback def go print 1 raise..
Python multiprocessing.Pool: when to use apply, apply_async or map? http://stackoverflow.com/questions/8533318/python-multiprocessing-pool-when-to-use-apply-apply-async-or-map have not seen clear examples with use cases for Pool.apply Pool.apply_async and Pool.map . I am mainly using Pool.map what are the advantages.. Pool.apply blocks until the function is completed. Pool.apply_async is also like Python's built in apply except that the call returns.. func args kwargs .get . In contrast to Pool.apply the Pool.apply_async method also has a callback which if supplied is called when..
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