set lora

[JamesBrianD]

Motivation

Modifications

Accuracy Tests

Benchmarking and Profiling

Checklist

• Please use English, otherwise it will be closed.
• The purpose of the PR, or link existing issues this PR will resolve.
• The test plan, such as providing test command.
• (Optional) The necessary documentation update.

[gemini-code-assist]

Summary of Changes

Hello @JamesBrianD, 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 performance optimizations for LoRA (Low-Rank Adaptation) weight management within the system. The primary goal is to reduce redundant computations by ensuring that LoRA layer buffer references are only updated, and model states are only re-captured, when new LoRA weights have actually been loaded into memory. This change enhances efficiency by avoiding unnecessary processing cycles when the active set of LoRA adapters remains unchanged.

Highlights

• Optimized LoRA Weight Updates: The system now avoids unnecessary re-capturing of model states and updates to LoRA layer buffer references when no new LoRA weights are loaded, improving efficiency.
• Conditional update_lora_info: The LoRAManager now only calls update_lora_info if new LoRA weights have actually been loaded into the memory pool, preventing redundant operations.
• LoRAMemoryPool Return Value: The prepare_lora_batch method in LoRAMemoryPool now returns a boolean indicating whether new weights were loaded, enabling the conditional update logic.
• Conditional Model State Re-capture: The ModelRunner now conditionally re-captures the model state for LoRA-enabled models, otherwise using a pre-captured state, further enhancing performance.
• New Test Coverage: A new unit test file has been added to validate the conditional update logic for LoRA management, ensuring correctness of the optimization.
• Gemini CLI Documentation: A new markdown file gemini.md was added, outlining testing constraints for the Gemini CLI.

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