Add node-local-aware EnsureDirectory helper#813
Draft
Sbozzolo wants to merge 1 commit into
Draft
Conversation
Palace created output directories only on the global root rank, which breaks on clusters where each node has its own local filesystem: ranks on non-root nodes write per-rank output into a directory that was never created there. Add `EnsureDirectory(dir, comm)`: the global root creates the directory, then one rank per shared-memory node (split via MPI_COMM_TYPE_SHARED) ensures it exists on that node's filesystem. On a shared filesystem the extra creates hit an already-existing directory harmlessly.
Sbozzolo
added
the
no-long-tests
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
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Palace created output directories only on the global root rank, which breaks on clusters where each node has its own local filesystem: ranks on non-root nodes write per-rank output into a directory that was never created there.
Add
EnsureDirectory(dir, comm): the global root creates the directory, then one rank per shared-memory node (split via MPI_COMM_TYPE_SHARED) ensures it exists on that node's filesystem. On a shared filesystem the extra creates hit an already-existing directory harmlessly.