fix sgl-kernel unit tests (#5666)

sgl-kernel/tests/test_fp8_blockwise_moe.py

@@ -47,6 +47,16 @@ def baseline_scaled_mm(
     ).to(out_dtype)
 
 
+def is_sm100_supported(device=None) -> bool:
+    return (torch.cuda.get_device_capability(device)[0] == 10) and (
+        torch.version.cuda >= "12.8"
+    )
+
+
+@pytest.mark.skipif(
+    not is_sm100_supported(),
+    reason="fp8_blockwise_scaled_grouped_mm at sgl-kernel is only supported on sm100",
+)
 @pytest.mark.parametrize("num_experts", [8, 16])
 @pytest.mark.parametrize("out_dtype", [torch.half, torch.bfloat16])
 def test_fp8_blockwise_scaled_grouped_mm(num_experts, out_dtype):