fix(llama-cpp): retain CPU variants in GPU builds - #11255
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Build the runtime CPU variant set alongside x86 GPU backends so partial offload uses the host's SIMD kernels instead of the scalar fallback. Keep arm64 GPU images on the portable binary until their builders consistently provide gcc-14. Assisted-by: Codex:gpt-5
mudler
approved these changes
Jul 31, 2026
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Description
This PR fixes #11254.
GPU llama.cpp images on x86 now use the existing
llama-cpp-cpu-allbuild target, preserving the selected CUDA/ROCm/Vulkan/SYCL backend while also packaging ggml's runtime-selected CPU kernels for partial offload. GPU arm64 builds remain on the portable fallback because their base images do not consistently provide the gcc-14 toolchain required by ggml's full armv9.2 variant matrix.A focused shell regression test covers the architecture/build-type target selection.
Notes for Reviewers
Verification:
make test-build-scriptsmake test-ci-scripts(41 tests)bash -n .docker/llama-cpp-build-target.sh .docker/llama-cpp-compile.sh scripts/build/llama-cpp-build-target_test.sh backend/cpp/llama-cpp/run.shgit diff --checkA full backend container build was not run locally because it is a long GPU/toolchain matrix build; CI is expected to exercise the affected llama.cpp image variants.
Signed commits