assert when found duplicated shape

[yzhou103]

Motivation

Technical Details

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Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[github-actions]

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• ✅ Pre-checks (submodule verification, code formatting)
• ✅ Aiter op tests (gfx942 + gfx950)
• ✅ Triton tests (only when aiter/ops/triton/** or related paths are changed)

Extended tests (opt-in via labels):

Label	Tests
ci:triton-355	Run Triton tests on MI355 in addition to MI325
ci:sglang	SGLang integration tests
ci:atom	ATOM benchmark (DeepSeek-R1 + GPT-OSS)
ci:vllm	vLLM benchmark
ci:all	All of the above

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[Copilot]

Pull request overview

Tightens config CSV merging in aiter/jit/core.py to detect duplicated shapes during merges (instead of silently dropping them) and adds/updates model-specific tuned/untuned config CSVs to avoid duplicate-shape collisions.

Changes:

• Reworks update_config_files() to validate column compatibility across merged CSVs and to error out when duplicate shapes are found (with an attempted auto-resolution path).
• Adds new model config CSVs (kimik2/gptoss/dsv3/qwen) for untuned/tuned GEMM and FP4 FMoE shapes.
• Removes specific duplicate entries from existing tuned GEMM CSVs.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
aiter/jit/core.py	Changes merge logic and duplicate-shape handling when combining multiple config CSVs.
aiter/configs/model_configs/kimik2_fp4_untuned_fmoe.csv	Adds untuned FP4 FMoE shapes for kimik2.
aiter/configs/model_configs/kimik2_bf16_untuned_gemm.csv	Adds untuned BF16 GEMM shapes for kimik2.
aiter/configs/model_configs/kimik2_bf16_tuned_gemm.csv	Removes a duplicate tuned entry.
aiter/configs/model_configs/gptoss_bf16_untuned_gemm.csv	Adds untuned BF16 GEMM shapes for gptoss.
aiter/configs/model_configs/dsv3_fp4_untuned_fmoe.csv	Adds untuned FP4 FMoE shapes for dsv3.
aiter/configs/model_configs/dsv3_bf16_untuned_gemm.csv	Adds untuned BF16 GEMM shapes for dsv3.
aiter/configs/model_configs/dsv3_bf16_tuned_gemm.csv	Removes duplicate tuned entries.
aiter/configs/model_configs/a8w8_blockscale_bpreshuffle_untuned_gemm_qwen3_235b.csv	Adds untuned A8W8 blockscale+bpreshuffle GEMM shapes for qwen3 235b.
aiter/configs/model_configs/a8w8_blockscale_bpreshuffle_untuned_gemm_qwen3.5_397b.csv	Adds untuned A8W8 blockscale+bpreshuffle GEMM shapes for qwen3.5 397b.
aiter/configs/model_configs/a8w8_blockscale_bpreshuffle_untuned_gemm_dsv3.csv	Adds untuned A8W8 blockscale+bpreshuffle GEMM shapes for dsv3.
aiter/configs/model_configs/a8w8_blockscale_bpreshuffle_tuned_gemm_qwen3_235b.csv	Removes duplicate tuned entries for qwen3 235b.
aiter/configs/model_configs/a8w8_blockscale_bpreshuffle_tuned_gemm_qwen3.5_397b.csv	Removes duplicate tuned entries for qwen3.5 397b.

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