multiprocessing Archives

Programming, Python

IT Nursery

What are the differences between the threading and multiprocessing modules?

I am learning how to use the threading and the multiprocessing modules in Python to run certain operations in parallel and speed up ...

June 4, 2022
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Programming, Python

IT Nursery

Multiprocessing: How to use Pool.map on a function defined in a class?

When I run something like: from multiprocessing import Pool p = Pool(5) def f(x): return x*x p.map(f,...

June 2, 2022
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Programming, Python

IT Nursery

Concurrent.futures vs Multiprocessing in Python 3

Python 3.2 introduced Concurrent Futures, which appear to be some advanced combination of the older threading and multiprocessing modules. What are the advantages ...

May 29, 2022
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Programming, Python

IT Nursery

RuntimeError on windows trying python multiprocessing

I am trying my very first formal python program using Threading and Multiprocessing on a windows machine. I am unable to launch the ...

May 27, 2022
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Can’t pickle when using multiprocessing Pool.map()

I’m trying to use multiprocessing‘s Pool.map() function to divide out work simultaneously. When I use the following code, it works fine: import multiprocessing ...

May 25, 2022
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multiprocessing vs multithreading vs asyncio in Python 3

I found that in Python 3.4 there are few different libraries for multiprocessing/threading: multiprocessing vs threading vs asyncio. But I don’t know which ...

May 25, 2022
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multiprocessing.Pool: What’s the difference between map_async and imap?

I’m trying to learn how to use Python’s multiprocessing package, but I don’t understand the difference between map_async and imap. I noticed that ...

May 23, 2022
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How should I log while using multiprocessing in Python?

Right now I have a central module in a framework that spawns multiple processes using the Python 2.6 multiprocessing module. Because it uses ...

May 18, 2022
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Python multiprocessing PicklingError: Can’t pickle

I am sorry that I can’t reproduce the error with a simpler example, and my code is too complicated to post. If I ...

May 14, 2022
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multiprocessing.Pool: When to use apply, apply_async or map?

I 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 of ...

May 11, 2022
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