NCAS-CMS / NCAS-CMS/PyActiveStorage

Efficiency in dask applications.

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#213 0 comments 0 reactions 1 assignee View on GitHub

@bnlawrence is already working on this.

Since Jul 23, 2024.

enhancement
Dominant language
Python
Stars
6
Forks
2
PR merge metrics
No merged PRs in 30d

Description

It is clear we want to avoid pyactivestorage doing a file open inside each dask chunk if such a file open requires a remote index read each and every time.

A quick hack to fix this (in the pyfive branch) would be to avoid keeping the File instance open (the optimal_kerchunk branch already does this). With that one change, users could at least use active storage instances many times without worrying about the file open count.

A better solution long term may involve lifting the internal s3fs outside so we can take advantage of the s3fs caching.

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