Make DistributedArrays thread-safe #263
Merged
+176
−138
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
andreasnoack
approved these changes
Dec 4, 2025
Member
andreasnoack
left a comment
andreasnoack
left a comment
There was a problem hiding this comment.
Might be good to file an issue about the alternative implementation, such that it is on record but we should get this one in to resolve the thread safety issue.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
By putting locks around the global dictionaries in
DistributedArraysandDistributedArrays.SPMD, and using anAtomicfor the ID generation.While it works, I think conceptually it would be cleaner to store references of remote parts locally, associated with each array, and make use of the reference tracking and garbage collection behaviour of
RemoteChannels: https://docs.julialang.org/en/v1/manual/distributed-computing/#Remote-References-and-Distributed-Garbage-Collection As advised in the docs, to reduce memory on the workers in the finalizer of each array we could callfinalizeon theRemoteChannel.