only root read computation graph bytes #192
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Summary of Changes
Hello @zhiyong1997, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request introduces an optimization to the read_circuit function by ensuring that the computation graph data is loaded from disk only by the designated root process in a distributed setup. This change streamlines resource usage and enhances performance for parallelized computations by eliminating unnecessary file access across multiple nodes.
Highlights
- Performance Optimization: The reading of the computation graph bytes from the setup file is now restricted to only the root MPI process. This prevents redundant file I/O operations on non-root processes, improving overall efficiency in parallelized environments.
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Code Review
This pull request correctly refactors the code to ensure that only the root process reads the computation graph from the file system. This is a good improvement for a distributed application, as it avoids redundant file I/O on worker nodes and potential access issues. My review includes a suggestion to improve error handling to make the application more robust.
| let computation_graph_bytes = | ||
| std::fs::read(setup_file).expect("Failed to read computation graph from file"); |
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Using .expect() will cause the process to panic if it fails to read the file. In a server context, it's generally better to handle such errors gracefully. Consider modifying read_circuit to return a Result and propagate the error upwards. This would allow the calling code (e.g., the HTTP handler) to return a meaningful error response to the client instead of having the worker process crash or the server return a generic 500 error.
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