Allocator and data transfer support for plugin EP API #25070
Merged
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
![github-actions[bot]](https://avatars.githubusercontent.com/in/15368?s=60&v=4){kind=small}
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
skottmckay
commented
Jun 14, 2025
Fix MIGraphX build.
edgchen1
reviewed
Jun 17, 2025
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
edgchen1
reviewed
Jun 26, 2025
Ensure there's always a shared CPU allocator available.
adrianlizarraga
approved these changes
Jun 27, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Description
Add allocator and data transfer infrastructure for plugin EP API
Allocators are created via the OrtEpFactory using OrtMemoryInfo that as added to the OrtEpDevice instances the factory returns. This allows allocators to be created outside of an inference session and shared.
When a library is loaded a default instance of each allocator is added to the shared allocators if there is no existing allocator (e.g. user provided custom allocator).
CreateSharedAllocator can be used to replace this default instance with a user configured one. e.g. add an arena or provide other configuration options that are passed through to the OrtEpFactory's CreateAllocator function.
Similarly IDataTransfer is supported by the factory implementing OrtDataTransferImpl, which will also enable data transfer outside of a session. That will be added in a future PR as the synchronization requirements need to be figured out and will affect the public API.
Motivation and Context