[sgl-kernel] fix: fix cu118 compile error (#6123)

Co-authored-by: zhyncs <me@zhyncs.com>

sgl-kernel/csrc/attention/cutlass_mla_kernel.cu

@@ -25,7 +25,21 @@ limitations under the License.
 #include <device/sm100_mla.hpp>
 #include <kernel/sm100_mla_tile_scheduler.hpp>
 
-#if defined CUDA_VERSION && CUDA_VERSION >= 12040
+// clang-format off
+#if !defined(CUDA_VERSION) || CUDA_VERSION < 12040
+void cutlass_mla_decode(
+    torch::Tensor const& out,
+    torch::Tensor const& q_nope_and_q_pe,
+    torch::Tensor const& kv_c_and_k_pe_cache,
+    torch::Tensor const& seq_lens,
+    torch::Tensor const& page_table,
+    torch::Tensor const& workspace) {
+  TORCH_CHECK(false, "CUDA version must be >= 12.4 for cutlass_mla_decode");
+}
+int64_t cutlass_mla_get_workspace_size(int64_t max_seq_len, int64_t num_batches, int64_t sm_count) {
+  TORCH_CHECK(false, "CUDA version must be >= 12.4 for cutlass_mla_get_workspace_size");
+}
+#else
 
 #define CUTLASS_CHECK(status)                                                       \
   {                                                                                 \
@@ -209,3 +223,4 @@ int64_t cutlass_mla_get_workspace_size(int64_t max_seq_len, int64_t num_batches,
 }
 
 #endif
+// clang-format on

sgl-kernel/csrc/grammar/apply_token_bitmask_inplace_cuda.cu

@@ -24,9 +24,12 @@
 #include <cuda_runtime.h>
 #include <torch/all.h>
 #include <ATen/cuda/CUDAContext.h>
-// clang-format on
 
-#if defined CUDA_VERSION && CUDA_VERSION >= 12040
+#if !defined(CUDA_VERSION) || CUDA_VERSION < 12040
+void ApplyTokenBitmaskInplace(at::Tensor logits, at::Tensor bitmask, at::optional<at::Tensor> indices = at::nullopt) {
+  TORCH_CHECK(false, "CUDA version must be >= 12.4 for ApplyTokenBitmaskInplace");
+}
+#else
 
 #ifndef CUDART_INF_FP16
 #define CUDART_INF_FP16 __ushort_as_half((unsigned short)0x7C00U)
@@ -252,3 +255,4 @@ void ApplyTokenBitmaskInplace(at::Tensor logits, at::Tensor bitmask, at::optiona
   }
 }
 #endif
+// clang-format on