fix(nccl-tests): limit CUDA gencode to sm_70+ (CUDA 13 dropped Pascal)

iso/builder/build-nccl-tests.sh

@@ -96,10 +96,16 @@ SRC_DIR=$(ls -d nccl-tests-* 2>/dev/null | head -1)
 cd "$SRC_DIR"
 
 echo "=== building all_reduce_perf ==="
+# CUDA 13.0 dropped support for compute_60 (Pascal); target Volta+ only.
+GENCODE="-gencode=arch=compute_70,code=sm_70 \
+         -gencode=arch=compute_80,code=sm_80 \
+         -gencode=arch=compute_86,code=sm_86 \
+         -gencode=arch=compute_90,code=sm_90"
 make MPI=0 \
     NVCC="$NVCC" \
     CUDA_HOME="$CUDA_HOME" \
     NCCL_HOME="$NCCL_INCLUDE_DIR/.." \
+    NVCC_GENCODE="$GENCODE" \
     BUILDDIR="./build"
 
 [ -f "./build/all_reduce_perf" ] || { echo "ERROR: all_reduce_perf not found after build"; exit 1; }