fix(iso): fix NCCL version to 2.28.9+cuda13.0, add sha256 verification
NVIDIA's CUDA repo for Debian 12 only has NCCL packages for cuda13.x, not cuda12.x. Update to the latest available: 2.28.9-1+cuda13.0. Also pass sha256 from VERSIONS into build-nccl.sh for integrity check. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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@@ -189,7 +189,7 @@ fi
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# --- build / download NCCL ---
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echo ""
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echo "=== downloading NCCL ${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION} ==="
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sh "${BUILDER_DIR}/build-nccl.sh" "${NCCL_VERSION}" "${NCCL_CUDA_VERSION}" "${DIST_DIR}"
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sh "${BUILDER_DIR}/build-nccl.sh" "${NCCL_VERSION}" "${NCCL_CUDA_VERSION}" "${DIST_DIR}" "${NCCL_SHA256:-}"
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NCCL_CACHE="${DIST_DIR}/nccl-${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION}"
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