[blackwell][draft] sm100: setup.py _sm100_extensions infra (#224) - #232
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[blackwell][draft] sm100: setup.py _sm100_extensions infra (#224)#232Andrewxu313 wants to merge 2 commits into
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Placeholder commit for draft PR. Implementation tracked in: batchgen-agent-metadata/batchgen_design/blackwell/blackwell-kernel-port-v1.md Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
…ic kernels setup.py: - Add _sm100_flags (-arch=sm_100a, -O3, --use_fast_math) and _sm100_extensions list containing the 8 generic-CUDA / SM80-mma.sync extensions that are SM100-portable (no SM90a WGMMA/TMA): marlin_grouped_gemm (carries -DUSE_BF16_COMPUTE), fp8_blockwise_ops, marlin_transform, _C_routing (generic kernels only), dispatch_scatter_3d, fused_kv_norm_rope, fused_q_absorb, fused_q_split. - Wire assembly: if _build_sm90a / elif _build_sm100 / always _sm80. - WGMMA sources (fused_gate.cu, qkv_wgmma.cu, glm5 uses generic so kept) are excluded from the SM100 routing bundle; glm5_router_gemm.cu is generic CUDA (warp-shuffle only) and retained. routing_extension.cc: - Guard the WGMMA-backed fused_gate_* pybind bindings behind #ifdef BATCHGEN_HAS_FUSED_GATE so the SM100 build (which omits fused_gate.cu) does not emit an undefined-symbol import error. SM90a build defines the macro. Verified: BUILD_ARCH=sm100 builds all 8 extensions; all load on B200 (sm_100). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Closes #224. Part of #204 (Blackwell Phase 2).
Summary
Add _sm100_flags (-arch=sm_100a) and empty _sm100_extensions list to batchgen_kernels/setup.py. Wire _build_sm100 gate.
Spec
batchgen-agent-metadata: batchgen_design/blackwell/blackwell-kernel-port-v1.md § Sub-task 1