[sgl-kernel] fix b200 kernel ci

.github/workflows/pr-test.yml

@@ -271,36 +271,36 @@ jobs:
 
           echo "All benchmark tests completed!"
 
-  # sgl-kernel-b200-test:
-  #   needs: [check-changes, sgl-kernel-build-wheels]
-  #   if: needs.check-changes.outputs.sgl_kernel == 'true'
-  #   runs-on: 4-gpu-b200
-  #   env:
-  #     RUNNER_LABELS: 4-gpu-b200
-  #   steps:
-  #     - uses: actions/checkout@v4
+  sgl-kernel-b200-test:
+    needs: [check-changes, sgl-kernel-build-wheels]
+    if: needs.check-changes.outputs.sgl_kernel == 'true'
+    runs-on: 4-gpu-b200
+    env:
+      RUNNER_LABELS: 4-gpu-b200
+    steps:
+      - uses: actions/checkout@v4
 
-  #     - name: Cleanup
-  #       run: |
-  #         ls -alh sgl-kernel/dist || true
-  #         rm -rf sgl-kernel/dist/* || true
+      - name: Cleanup
+        run: |
+          ls -alh sgl-kernel/dist || true
+          rm -rf sgl-kernel/dist/* || true
 
-  #     - name: Download artifacts
-  #       uses: actions/download-artifact@v4
-  #       with:
-  #         path: sgl-kernel/dist/
-  #         merge-multiple: true
-  #         pattern: wheel-python3.10-cuda12.9
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: sgl-kernel/dist/
+          merge-multiple: true
+          pattern: wheel-python3.10-cuda12.9
 
-  #     - name: Install dependencies
-  #       run: |
-  #         CUSTOM_BUILD_SGL_KERNEL=${{needs.check-changes.outputs.sgl_kernel}} IS_BLACKWELL=1 bash scripts/ci/ci_install_dependency.sh
+      - name: Install dependencies
+        run: |
+          CUSTOM_BUILD_SGL_KERNEL=${{needs.check-changes.outputs.sgl_kernel}} IS_BLACKWELL=1 bash scripts/ci/ci_install_dependency.sh
 
-  #     - name: Run sgl-kernel unit tests on B200
-  #       timeout-minutes: 30
-  #       run: |
-  #         cd sgl-kernel
-  #         pytest tests/
+      - name: Run sgl-kernel unit tests on B200
+        timeout-minutes: 30
+        run: |
+          cd sgl-kernel
+          pytest tests/
 
   # Adding a single CUDA13 smoke test to verify that the kernel builds and runs
   # TODO: Add back this test when it can pass on CI
@@ -1094,6 +1094,7 @@ jobs:
         sgl-kernel-unit-test,
         sgl-kernel-mla-test,
         sgl-kernel-benchmark-test,
+        sgl-kernel-b200-test,
 
         multimodal-gen-test-1-gpu,
         multimodal-gen-test-2-gpu,

sgl-kernel/tests/test_es_fp8_blockwise_moe.py

@@ -99,8 +99,8 @@ def is_sm90_supported(device=None) -> bool:
 
 
 @pytest.mark.skipif(
-    not (is_sm100_supported() or is_sm90_supported()),
-    reason="fp8_blockwise_scaled_grouped_mm at sgl-kernel is only supported on sm100 or sm90",
+    not is_sm90_supported(),
+    reason="es_fp8_blockwise_scaled_grouped_mm at sgl-kernel is only supported on sm90",
 )
 @pytest.mark.parametrize("num_experts", [8, 16, 32, 64, 128])
 @pytest.mark.parametrize("out_dtype", [torch.half, torch.bfloat16])

sgl-kernel/tests/test_flashmla.py

@@ -38,6 +38,12 @@
 DTYPE = [torch.float16, torch.bfloat16]
 
 
+def is_sm90_supported(device=None) -> bool:
+    return (torch.cuda.get_device_capability(device)[0] == 9) and (
+        torch.version.cuda >= "12.3"
+    )
+
+
 def quantize_k_cache(
     input_k_cache: torch.Tensor,  # (num_blocks, block_size, h_k, d)
     dv: int,
@@ -362,6 +368,7 @@ def test_flashmla_prefill(
     torch.testing.assert_close(ans_lse, ref_lse, atol=1e-6, rtol=2.01 / 65536)
 
 
+@pytest.mark.skipif(not is_sm90_supported(), reason="SM90 required for FP8 support")
 @pytest.mark.parametrize("b", B_DECODE)
 @pytest.mark.parametrize("s_q", S_Q_DECODE)
 @pytest.mark.parametrize("s_k", S_K_DECODE)
@@ -512,6 +519,7 @@ def test_flash_mla_decode(
     torch.testing.assert_close(lse_ans, lse_ref, atol=1e-6, rtol=8.01 / 65536)
 
 
+@pytest.mark.skipif(not is_sm90_supported(), reason="SM90 required for FP8 support")
 @pytest.mark.parametrize("b", [128])
 @pytest.mark.parametrize("s_q", [1, 2])
 @pytest.mark.parametrize("mean_sk", [4096, 8192, 16384])