fix TEGroupedLinear

[tastelikefeet]

PR type

• Bug Fix
• New Feature
• Document Updates
• More Models or Datasets Support

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[gemini-code-assist]

Summary of Changes

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This pull request addresses a bug impacting TEGroupedLinear within the LoRA tuning implementation for Megatron models. The change streamlines the handling of tensor parallelism group (tp_group) parameters during layer updates, ensuring consistent and correct behavior by removing a version-dependent conditional assignment.

Highlights

• LoRA tp_group handling: Removed a conditional assignment of the tp_group parameter within the update_layer method of the LoRA tuner. Previously, tp_group was added to kwargs only if megatron_core version was >=0.13, which has been identified as the cause for the TEGroupedLinear bug.

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Code Review

This pull request aims to fix an issue with TEGroupedLinear by removing the tp_group argument from the kwargs passed to LoRA layer constructors. While this might fix the issue for TEGroupedLinear, the change is applied to all transformer_engine layers, which could potentially break other layer types that still rely on tp_group. I've suggested a more targeted fix to only exclude tp_group for grouped linear layers, making the change safer.