From 113d859d13f08ca9533e1ba5a0d4b645c26028ee Mon Sep 17 00:00:00 2001
From: Binyang Li <binyli@microsoft.com>
Date: Fri, 8 May 2026 03:00:53 +0000
Subject: [PATCH] fix

---
 src/ext/collectives/allreduce/allreduce_nvls_zero_copy.cu | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ext/collectives/allreduce/allreduce_nvls_zero_copy.cu b/src/ext/collectives/allreduce/allreduce_nvls_zero_copy.cu
index 99146779..ef6d216c 100644
--- a/src/ext/collectives/allreduce/allreduce_nvls_zero_copy.cu
+++ b/src/ext/collectives/allreduce/allreduce_nvls_zero_copy.cu
@@ -83,7 +83,8 @@ struct NvlsAdapter {
       // fp8_e4m3b15 is a software-only type with no hardware NVLS support.
       return cudaErrorNotSupported;
     } else
-#if (!defined(__CUDA_ARCH_SPECIFIC__) && !defined(__CUDA_ARCH_FAMILY_SPECIFIC__)) || (__CUDA_ARCH__ < 1000)
+#if defined(__CUDA_ARCH__) && \
+    ((!defined(__CUDA_ARCH_SPECIFIC__) && !defined(__CUDA_ARCH_FAMILY_SPECIFIC__)) || (__CUDA_ARCH__ < 1000))
         if constexpr (std::is_same_v<T, __fp8_e4m3> || std::is_same_v<T, __fp8_e5m2>) {
       return cudaErrorNotSupported;
     } else