AWQ: Filter out the mappings that are entirely ignored

[ZewenShen-Cohere]

SUMMARY:

This PR addresses the concern in #2152 (comment)

[gemini-code-assist]

Summary of Changes

Hello @ZewenShen-Cohere, 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 refines the Activation-aware Weight Quantization (AWQ) process by implementing a crucial filtering mechanism. It ensures that any AWQ mappings whose balance layers are entirely designated to be ignored are no longer included in the processing pipeline. This change directly addresses a previously identified concern, streamlining the quantization workflow and improving efficiency by avoiding operations on explicitly excluded components.

Highlights

• AWQ Mapping Filtering: Implemented new logic within the AWQ modifier to filter out mappings where all associated balance layers are explicitly marked to be ignored. This prevents unnecessary processing of layers that are not intended for quantization.
• Utility Import: Added an import for the match_targets utility function, which is now utilized to accurately check if balance layer names match the configured ignore patterns.

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[gemini-code-assist]

Code Review

This pull request adds a filtering mechanism to the AWQModifier to exclude mappings where all associated balance layers are present in the ignore list. This change provides finer-grained control over the AWQ process. The implementation is clear and directly addresses the goal. I have one suggestion to enhance the robustness of the code by handling cases where self.ignore might be None.