[AMD] update ROCm AITER commit

[bingxche]

Summary

• Update the default ROCm Dockerfile AITER commit to 6740fb7911db231e6eadad45194ad6713d25f9fb for all ROCm image targets.

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CI States

Latest PR Test (Base): ✅ Run #27009642287
Latest PR Test (Extra): ❌ Run #27009642114

[gemini-code-assist]

Code Review

This pull request updates the default commit hash for AITER_COMMIT_DEFAULT across multiple stages in docker/rocm.Dockerfile. The reviewer suggests refactoring the Dockerfile to define this variable as a global ARG at the top of the file, which would eliminate duplication and make future updates less error-prone.

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[gemini-code-assist]

The environment variable AITER_COMMIT_DEFAULT is duplicated across all four base image stages (lines 34, 44, 54, and 64). This duplication makes updates error-prone and harder to maintain.

Consider defining AITER_COMMIT_DEFAULT once as a global ARG at the top of the Dockerfile (before the first FROM instruction) and then referencing it in the final stage. This allows you to manage the default commit in a single place.

Suggested Refactoring

1. At the very top of the Dockerfile (before the first FROM):

ARG AITER_COMMIT_DEFAULT="6740fb7911db231e6eadad45194ad6713d25f9fb"

2. In the final stage (around line 86):

ARG AITER_COMMIT_DEFAULT
ARG AITER_COMMIT=""
ENV AITER_COMMIT="${AITER_COMMIT:-${AITER_COMMIT_DEFAULT}}"

3. Remove the ENV AITER_COMMIT_DEFAULT lines from the base stages (gfx942, gfx942-rocm720, gfx950, and gfx950-rocm720).