memory issue in select with large number of combos

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
data

Research direction

Start at bluepymm/select_combos/table_processing.py#L284 and trace how the large dataframe is copied into arg_list during multiprocessing. Reproduce the failure with a large number of combinations and measure memory use. Done means avoiding the repeated copies or providing a documented way to bypass multiprocessing, with the original selection behavior preserved.

Written by the indexing model from the issue text.

Description

It fails here: https://github.com/BlueBrain/BluePyMM/blob/master/bluepymm/select_combos/table_processing.py#L284
because the large dataframe is copied several times in the arg_list. There may be something simple to do here to fix that issue (or allow users to bypass multiprocessing).

Dominant language
Python
Stars
13
Forks
9
No merged PRs in 30d

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