Override arguments if dumper enabled

[fzyzcjy]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request introduces a mechanism to dynamically adjust runtime arguments based on whether a 'dumper mode' is active. The primary goal is to streamline the configuration for dumper operations by automatically overriding certain parameters, such as disabling health checks and controlling rollout behavior, to prevent conflicts and ensure consistent execution within this specialized mode. This change is part of a larger series of enhancements related to dumper and megatron runner functionality.

Highlights

• Argument Override Logic: Added logic to override specific arguments when 'dumper mode' is enabled, ensuring dumper-specific configurations take precedence.
• Dumper Mode Configuration: When dumper mode is active, fault tolerance is disabled, all heartbeat mechanisms are suppressed, and the number of rollouts is forced to one (or start_rollout_id + 1), with evaluation and saving intervals set to None.

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[gemini-code-assist]

Code Review

This pull request introduces logic to override certain arguments when dumper mode is enabled, along with corresponding unit tests. The changes are logical and well-tested. My review identifies a minor issue with a log message that could be misleading and provides a suggestion to improve its clarity and accuracy.

[gemini-code-assist]

The log message on line 1950 is misleading because it logs the value of args.num_rollout before it is updated on the next line. This can cause confusion during debugging, as the logged value will not match the value actually used. To ensure the log reflects the correct value, the assignment should happen before the logging statement.

Suggested change

	logger.info("Dumper mode: forced num_rollout=%d, disabled eval and save", args.num_rollout)
	args.num_rollout = (args.start_rollout_id or 0) + 1
	args.num_rollout = (args.start_rollout_id or 0) + 1
	logger.info("Dumper mode: forced num_rollout=%d, disabled eval and save", args.num_rollout)