Fix CUDA version handling in ci_install_deepep.sh (#14854)

scripts/ci/ci_install_deepep.sh

@@ -70,7 +70,13 @@ if [ "$GRACE_BLACKWELL" = "1" ]; then
     if [ "$CUDA_VERSION" = "12.8" ]; then
         CHOSEN_TORCH_CUDA_ARCH_LIST='10.0'
     elif awk -v ver="$CUDA_VERSION" 'BEGIN {exit !(ver > 12.8)}'; then
-        CHOSEN_TORCH_CUDA_ARCH_LIST='10.0;10.3'
+        # With cuda > 12.8, the compiler supports 10.3, so we should use
+        # CHOSEN_TORCH_CUDA_ARCH_LIST='10.0;10.3'
+        #
+        # However, our CI machine has a weird setup and nvidia-smi reports wrong CUDA version in the container.
+        # The container is actually cuda 12.8, but nvidia-smi reports 13.0, leading to compilation errors. so we
+        # drop 10.3.
+        CHOSEN_TORCH_CUDA_ARCH_LIST='10.0'
     else
         echo "Unsupported CUDA version for Grace Blackwell: $CUDA_VERSION" && exit 1
     fi && \