[flang][cuda][rt] Track asynchronous allocation stream for deallocation#137073
Merged
clementval merged 2 commits intollvm:mainfrom Apr 24, 2025
Merged
[flang][cuda][rt] Track asynchronous allocation stream for deallocation#137073clementval merged 2 commits intollvm:mainfrom
clementval merged 2 commits intollvm:mainfrom
Conversation
wangzpgi
reviewed
Apr 23, 2025
wangzpgi
approved these changes
Apr 23, 2025
IanWood1
pushed a commit
to IanWood1/llvm-project
that referenced
this pull request
May 6, 2025
…on (llvm#137073) When an asynchronous allocation is made, we call `cudaMallocAsync` with a stream. For deallocation, we need to call `cudaFreeAsync` with the same stream. in order to achieve that, we need to track the allocation and their respective stream. This patch adds a simple sorted array of asynchronous allocations. A binary search is performed to retrieve the allocation when deallocation is needed.
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
When an asynchronous allocation is made, we call
cudaMallocAsyncwith a stream. For deallocation, we need to callcudaFreeAsyncwith the same stream. in order to achieve that, we need to track the allocation and their respective stream.This patch adds a simple sorted array of asynchronous allocations. A binary search is performed to retrieve the allocation when deallocation is needed.