[issue28506] Multiprocessing Pool starmap - struct.error: 'i' format requires -2e10<=n<=2e10

Serhiy Storchaka added the comment: Closed as a duplicate of issue17560. -- stage: -> resolved status: open -> closed ___ Python tracker

[issue28506] Multiprocessing Pool starmap - struct.error: 'i' format requires -2e10<=n<=2e10

Justin Ting added the comment: Actually, on further inspection, I seem to be having a slightly different problem with the same error that I initially described now. Even after modifying my code so that each python forked off to another process was only given the following arguments: args =

[issue28506] Multiprocessing Pool starmap - struct.error: 'i' format requires -2e10<=n<=2e10

Justin Ting added the comment: Ah, should have picked that up, coding at 3:30am doesn't do wonders for keeping a clear head. Thanks Tim, I'll keep that in mind! *Justin Ting* *E* justingl...@gmail.com | *M* +61 424 751 665 | *L* *https://au.linkedin.com/in/justinyting

[issue28506] Multiprocessing Pool starmap - struct.error: 'i' format requires -2e10<=n<=2e10

Serhiy Storchaka added the comment: This looks as a duplicate of issue17560. -- nosy: +serhiy.storchaka resolution: -> duplicate superseder: -> problem using multiprocessing with really big objects? ___ Python tracker

[issue28506] Multiprocessing Pool starmap - struct.error: 'i' format requires -2e10<=n<=2e10

Tim Peters added the comment: This has nothing to do with the _values_ you're passing - it has to do with the length of the pickle string: def _send_bytes(self, buf): n = len(buf) # For wire compatibility with 3.2 and lower header = struct.pack("!i", n) IT'S

[issue28506] Multiprocessing Pool starmap - struct.error: 'i' format requires -2e10<=n<=2e10

New submission from Justin Ting: Multiprocessing is throwing this error when dealing with large amounts of data (all floating points an integers), but none of which exceeds the number boundaries in the error that it throws: File "/root/anaconda3/lib/python3.5/multiprocessing/pool.py", line