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Jesse Gross 147509c0c5 mlxrunner: add structured output support 
The MLX runner accepted the API's format field but did not enforce it:
requests asking for JSON or a JSON Schema got unconstrained text, and
clients had no way to tell.

Enforce format with xgrammar: each sampling step masks the logits to
the tokens the grammar allows, so every emitted token and the end of
generation are valid under the constraint. Sampling, penalties, and
logprobs see the constrained distribution, and "json" yields a JSON
object, as the API documents and the llama-server path already
enforces. Only sampling waits on the mask; the forward pass is
dispatched before it, so constrained decoding stays pipelined.

The grammar engine is a dynamic library alongside MLX; when it is
missing, plain inference is unaffected and structured requests fail
with an explicit error. Constrained requests decode without
speculative decoding for now.

Decoding 256 tokens of a book-list schema on qwen3.8:27b-mlx (M5 Max,
seed 42, thinking off); pre-decode is the request time spent before
the first token:

    unconstrained              ~65 tok/s   pre-decode ~70 ms
    unconstrained, no draft    ~32 tok/s   pre-decode ~70 ms
    JSON schema                ~32 tok/s   pre-decode ~70 ms

Schema and draft-less decoding are equal to within 0.1 tok/s in
paired adjacent requests, and a cold grammar compile adds nothing
measurable to pre-decode. The gap to unconstrained decoding is the
disabled draft model.

Fixes #16563
Co-authored-by: Daniel Hiltgen <daniel@ollama.com>
2026-08-25 17:14:23 -07:00

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# vim: filetype=dockerfile
ARG FLAVOR=${TARGETARCH}
ARG ROCMVERSION=7.2.1
ARG JETPACK5VERSION=r35.4.1
ARG JETPACK6VERSION=r36.4.0
ARG CMAKEVERSION=3.31.2
ARG NINJAVERSION=1.12.1
ARG VULKANVERSION=1.4.321.1
# Default empty stages for local MLX source overrides.
# Override with: docker build --build-context local-mlx=../mlx --build-context local-mlx-c=../mlx-c
FROM scratch AS local-mlx
FROM scratch AS local-mlx-c
FROM --platform=linux/amd64 rocm/dev-almalinux-8:${ROCMVERSION}-complete AS base-amd64
RUN dnf install -y yum-utils ccache gcc-toolset-13-gcc gcc-toolset-13-gcc-c++ gcc-toolset-13-binutils \
&& yum-config-manager --add-repo https://developer.download.nvidia.com/compute/cuda/repos/rhel8/x86_64/cuda-rhel8.repo
ENV PATH=/opt/rh/gcc-toolset-13/root/usr/bin:$PATH
FROM --platform=linux/arm64 almalinux:8 AS base-arm64
# install epel-release for ccache
RUN yum install -y yum-utils epel-release \
&& dnf install -y clang ccache git \
&& yum-config-manager --add-repo https://developer.download.nvidia.com/compute/cuda/repos/rhel8/sbsa/cuda-rhel8.repo
ENV CC=clang CXX=clang++
FROM base-${TARGETARCH} AS base
ARG CMAKEVERSION
ARG NINJAVERSION
RUN curl -fsSL https://github.com/Kitware/CMake/releases/download/v${CMAKEVERSION}/cmake-${CMAKEVERSION}-linux-$(uname -m).tar.gz | tar xz -C /usr/local --strip-components 1
RUN dnf install -y unzip \
&& curl -fsSL -o /tmp/ninja.zip https://github.com/ninja-build/ninja/releases/download/v${NINJAVERSION}/ninja-linux$([ "$(uname -m)" = "aarch64" ] && echo "-aarch64").zip \
&& unzip /tmp/ninja.zip -d /usr/local/bin \
&& rm /tmp/ninja.zip
ENV CMAKE_GENERATOR=Ninja
ENV LDFLAGS=-s
#
# GPU toolchain stages — provide compilers for llama-server GPU builds
#
FROM base AS cpu-deps
RUN dnf install -y gcc-toolset-13-gcc gcc-toolset-13-gcc-c++
ENV PATH=/opt/rh/gcc-toolset-13/root/usr/bin:$PATH
FROM base AS cuda-12-deps
ARG CUDA12VERSION=12.8
RUN dnf install -y cuda-toolkit-${CUDA12VERSION//./-}
ENV PATH=/usr/local/cuda-12/bin:$PATH
FROM base AS cuda-13-deps
ARG CUDA13VERSION=13.0
RUN dnf install -y cuda-toolkit-${CUDA13VERSION//./-}
ENV PATH=/usr/local/cuda-13/bin:$PATH
FROM base AS rocm-7-deps
ENV PATH=/opt/rocm/llvm/bin:/opt/rocm/hcc/bin:/opt/rocm/hip/bin:/opt/rocm/bin:$PATH
FROM base AS vulkan-deps
ARG VULKANVERSION
RUN ln -s /usr/bin/python3 /usr/bin/python \
&& wget https://sdk.lunarg.com/sdk/download/${VULKANVERSION}/linux/vulkansdk-linux-x86_64-${VULKANVERSION}.tar.xz -O /tmp/vulkansdk.tar.xz \
&& tar xvf /tmp/vulkansdk.tar.xz -C /tmp \
&& /tmp/${VULKANVERSION}/vulkansdk -j 8 vulkan-headers \
&& /tmp/${VULKANVERSION}/vulkansdk -j 8 spirv-headers \
&& /tmp/${VULKANVERSION}/vulkansdk -j 8 shaderc \
&& cp -r /tmp/${VULKANVERSION}/x86_64/include/* /usr/local/include/ \
&& cp -r /tmp/${VULKANVERSION}/x86_64/lib/* /usr/local/lib \
&& cp -r /tmp/${VULKANVERSION}/x86_64/share/* /usr/local/share/ \
&& cp -r /tmp/${VULKANVERSION}/x86_64/bin/* /usr/local/bin/ \
&& rm -rf /tmp/${VULKANVERSION} /tmp/vulkansdk.tar.xz
ENV VULKAN_SDK=/usr/local
#
# llama-server stages — rebuild when LLAMA_CPP_VERSION, llama/server/, or llama/compat/ changes.
#
# CPU stage: llama-server + ggml-base + ggml-cpu variants → lib/ollama/
# GPU stages: GPU backend .so only → lib/ollama/<variant>/
#
FROM cpu-deps AS llama-server-cpu
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset cpu \
&& cmake --build build/llama-server-cpu -- -l $(nproc) \
&& cmake --install build/llama-server-cpu --component llama-server --strip \
&& for lib in \
/usr/lib64/libgomp.so* \
/usr/lib64/libomp.so* \
/opt/rh/gcc-toolset-13/root/usr/lib64/libgomp.so* \
/opt/rh/gcc-toolset-13/root/usr/lib64/libomp.so*; do \
[ -e "$lib" ] && cp -a "$lib" dist/lib/ollama/ || true; \
done
FROM scratch AS publish-llama-server-cpu
COPY --from=llama-server-cpu dist/lib/ollama /lib/ollama/
FROM cuda-12-deps AS llama-server-cuda_v12
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset llama_cuda_v12_linux \
&& cmake --build build/llama-server-cuda_v12 -- -l $(nproc) \
&& cmake --install build/llama-server-cuda_v12 --component llama-server --strip
FROM scratch AS publish-llama-server-cuda_v12
COPY --from=llama-server-cuda_v12 dist/lib/ollama /lib/ollama/
FROM cuda-13-deps AS llama-server-cuda_v13
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset llama_cuda_v13_linux \
&& cmake --build build/llama-server-cuda_v13 -- -l $(nproc) \
&& cmake --install build/llama-server-cuda_v13 --component llama-server --strip
FROM scratch AS publish-llama-server-cuda_v13
COPY --from=llama-server-cuda_v13 dist/lib/ollama /lib/ollama/
FROM rocm-7-deps AS llama-server-rocm_v7_2
ENV CC=clang CXX=clang++ CXXFLAGS=--gcc-toolchain=/opt/rh/gcc-toolset-13/root/usr
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset rocm_v7_2_linux \
&& cmake --build build/llama-server-rocm_v7_2 -- -l $(nproc) \
&& cmake --install build/llama-server-rocm_v7_2 --component llama-server --strip
RUN rm -f dist/lib/ollama/rocm_v7_2/rocblas/library/*gfx90[06]*
FROM scratch AS publish-llama-server-rocm_v7_2
COPY --from=llama-server-rocm_v7_2 dist/lib/ollama /lib/ollama/
FROM vulkan-deps AS llama-server-vulkan
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset vulkan \
&& cmake --build build/llama-server-vulkan -- -l $(nproc) \
&& cmake --install build/llama-server-vulkan --component llama-server --strip
FROM scratch AS publish-llama-server-vulkan
COPY --from=llama-server-vulkan dist/lib/ollama /lib/ollama/
#
# JetPack stages — self-contained with their own base images
#
FROM --platform=linux/arm64 nvcr.io/nvidia/l4t-jetpack:${JETPACK5VERSION} AS jetpack-5
ARG CMAKEVERSION
ARG NINJAVERSION
RUN apt-get update && apt-get install -y curl ccache git unzip \
&& curl -fsSL https://github.com/Kitware/CMake/releases/download/v${CMAKEVERSION}/cmake-${CMAKEVERSION}-linux-$(uname -m).tar.gz | tar xz -C /usr/local --strip-components 1 \
&& curl -fsSL -o /tmp/ninja.zip https://github.com/ninja-build/ninja/releases/download/v${NINJAVERSION}/ninja-linux-aarch64.zip \
&& unzip /tmp/ninja.zip -d /usr/local/bin \
&& rm /tmp/ninja.zip
ENV CMAKE_GENERATOR=Ninja
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset llama_cuda_jetpack5 \
&& cmake --build build/llama-server-cuda_jetpack5 -- -l $(nproc) \
&& cmake --install build/llama-server-cuda_jetpack5 --component llama-server --strip
FROM scratch AS publish-llama-server-cuda_jetpack5
COPY --from=jetpack-5 dist/lib/ollama /lib/ollama/
FROM --platform=linux/arm64 nvcr.io/nvidia/l4t-jetpack:${JETPACK6VERSION} AS jetpack-6
ARG CMAKEVERSION
ARG NINJAVERSION
RUN apt-get update && apt-get install -y curl ccache git unzip \
&& curl -fsSL https://github.com/Kitware/CMake/releases/download/v${CMAKEVERSION}/cmake-${CMAKEVERSION}-linux-$(uname -m).tar.gz | tar xz -C /usr/local --strip-components 1 \
&& curl -fsSL -o /tmp/ninja.zip https://github.com/ninja-build/ninja/releases/download/v${NINJAVERSION}/ninja-linux-aarch64.zip \
&& unzip /tmp/ninja.zip -d /usr/local/bin \
&& rm /tmp/ninja.zip
ENV CMAKE_GENERATOR=Ninja
COPY LLAMA_CPP_VERSION .
COPY llama/server llama/server
COPY llama/compat llama/compat
RUN --mount=type=cache,target=/root/.ccache \
cmake -S llama/server --preset llama_cuda_jetpack6 \
&& cmake --build build/llama-server-cuda_jetpack6 -- -l $(nproc) \
&& cmake --install build/llama-server-cuda_jetpack6 --component llama-server --strip
FROM scratch AS publish-llama-server-cuda_jetpack6
COPY --from=jetpack-6 dist/lib/ollama /lib/ollama/
#
# MLX stage
#
FROM base AS mlx
ARG CUDA13VERSION=13.0
ARG OLLAMA_MLX_BUILD_JOBS=
ARG OLLAMA_MLX_NVCC_THREADS=2
ARG MLX_CUDA_RAM_MB=
RUN dnf install -y cuda-toolkit-${CUDA13VERSION//./-} \
&& dnf install -y openblas-devel lapack-devel \
&& dnf install -y libcudnn9-cuda-13 libcudnn9-devel-cuda-13 \
&& dnf install -y libnccl libnccl-devel
ENV PATH=/usr/local/cuda-13/bin:$PATH
ENV BLAS_INCLUDE_DIRS=/usr/include/openblas
ENV LAPACK_INCLUDE_DIRS=/usr/include/openblas
ENV CGO_LDFLAGS="-L/usr/local/cuda-13/lib64 -L/usr/local/cuda-13/targets/x86_64-linux/lib/stubs"
WORKDIR /go/src/github.com/ollama/ollama
COPY CMakeLists.txt CMakePresets.json .
COPY cmake cmake
COPY mlx mlx
COPY x/mlxrunner/mlx x/mlxrunner/mlx
COPY x/mlxrunner/xgrammar/native x/mlxrunner/xgrammar/native
COPY go.mod go.sum .
COPY MLX_VERSION MLX_C_VERSION .
RUN curl -fsSL https://golang.org/dl/go$(awk '/^go/ { print $2 }' go.mod).linux-$(case $(uname -m) in x86_64) echo amd64 ;; aarch64) echo arm64 ;; esac).tar.gz | tar xz -C /usr/local
ENV PATH=/usr/local/go/bin:$PATH
RUN go mod download
RUN --mount=type=cache,target=/root/.ccache \
--mount=type=bind,from=local-mlx,target=/tmp/local-mlx \
--mount=type=bind,from=local-mlx-c,target=/tmp/local-mlx-c \
if [ -f /tmp/local-mlx/CMakeLists.txt ]; then \
export OLLAMA_MLX_SOURCE=/tmp/local-mlx; \
fi \
&& if [ -f /tmp/local-mlx-c/CMakeLists.txt ]; then \
export OLLAMA_MLX_C_SOURCE=/tmp/local-mlx-c; \
fi \
&& cmake -S . -B build/mlx_cuda_v13 -DOLLAMA_MLX_BACKENDS=cuda_v13 -DBLAS_INCLUDE_DIRS=/usr/include/openblas -DLAPACK_INCLUDE_DIRS=/usr/include/openblas -DCMAKE_CUDA_FLAGS="-t ${OLLAMA_MLX_NVCC_THREADS}" ${MLX_CUDA_RAM_MB:+-DMLX_CUDA_RAM_MB=${MLX_CUDA_RAM_MB}} -DOLLAMA_PAYLOAD_INSTALL_PREFIX=/go/src/github.com/ollama/ollama/dist \
&& cmake --build build/mlx_cuda_v13 --target ollama-mlx-cuda_v13 -- -l $(nproc) ${OLLAMA_MLX_BUILD_JOBS:+-j ${OLLAMA_MLX_BUILD_JOBS}}
FROM scratch AS publish-mlx
COPY --from=mlx /go/src/github.com/ollama/ollama/dist/lib/ollama /lib/ollama/
#
# Go build
#
FROM base AS build
WORKDIR /go/src/github.com/ollama/ollama
COPY go.mod go.sum .
RUN curl -fsSL https://golang.org/dl/go$(awk '/^go/ { print $2 }' go.mod).linux-$(case $(uname -m) in x86_64) echo amd64 ;; aarch64) echo arm64 ;; esac).tar.gz | tar xz -C /usr/local
ENV PATH=/usr/local/go/bin:$PATH
RUN go mod download
COPY . .
ARG GOFLAGS="'-ldflags=-w -s'"
ENV CGO_ENABLED=1
ARG CGO_CFLAGS
ARG CGO_CXXFLAGS
ENV CGO_CFLAGS="${CGO_CFLAGS}"
ENV CGO_CXXFLAGS="${CGO_CXXFLAGS}"
RUN --mount=type=cache,target=/root/.cache/go-build \
go build -trimpath -buildmode=pie -o /bin/ollama .
FROM scratch AS publish-go
COPY --from=build /bin/ollama /bin/ollama
#
# Assembly stages — combine llama-server variants + GPU runtime libs
#
FROM --platform=linux/amd64 scratch AS amd64
COPY --from=llama-server-cpu dist/lib/ollama /lib/ollama/
COPY --from=llama-server-cuda_v12 dist/lib/ollama /lib/ollama/
COPY --from=llama-server-cuda_v13 dist/lib/ollama /lib/ollama/
COPY --from=llama-server-vulkan dist/lib/ollama /lib/ollama/
COPY --from=mlx /go/src/github.com/ollama/ollama/dist/lib/ollama /lib/ollama/
FROM --platform=linux/arm64 scratch AS arm64
COPY --from=llama-server-cpu dist/lib/ollama /lib/ollama/
COPY --from=llama-server-cuda_v12 dist/lib/ollama /lib/ollama/
COPY --from=llama-server-cuda_v13 dist/lib/ollama /lib/ollama/
COPY --from=jetpack-5 dist/lib/ollama/ /lib/ollama/
COPY --from=jetpack-6 dist/lib/ollama/ /lib/ollama/
FROM scratch AS rocm
COPY --from=llama-server-cpu dist/lib/ollama /lib/ollama
COPY --from=llama-server-rocm_v7_2 dist/lib/ollama /lib/ollama
FROM --platform=linux/amd64 scratch AS amd64-archive
COPY --from=amd64 /lib/ollama /lib/ollama/
COPY --from=llama-server-rocm_v7_2 dist/lib/ollama /lib/ollama/
FROM --platform=linux/arm64 scratch AS arm64-archive
COPY --from=arm64 /lib/ollama /lib/ollama/
FROM ${TARGETARCH}-archive AS archive
COPY --from=build /bin/ollama /bin/ollama
FROM ${FLAVOR} AS image-archive
COPY --from=build /bin/ollama /bin/ollama
FROM ubuntu:24.04
ARG APT_MIRROR=http://archive.ubuntu.com/ubuntu
ARG APT_PORTS_MIRROR=http://ports.ubuntu.com/ubuntu-ports
RUN sed -i \
-e "s|http://archive.ubuntu.com/ubuntu|$APT_MIRROR|g" \
-e "s|http://ports.ubuntu.com/ubuntu-ports|$APT_PORTS_MIRROR|g" \
/etc/apt/sources.list.d/ubuntu.sources \
&& apt-get update \
&& apt-get install -y ca-certificates libvulkan1 libopenblas0 \
&& sed -i \
-e "s|$APT_MIRROR|http://archive.ubuntu.com/ubuntu|g" \
-e "s|$APT_PORTS_MIRROR|http://ports.ubuntu.com/ubuntu-ports|g" \
/etc/apt/sources.list.d/ubuntu.sources \
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/*
COPY --from=image-archive /bin /usr/bin
ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
COPY --from=image-archive /lib/ollama /usr/lib/ollama
ENV LD_LIBRARY_PATH=/usr/local/nvidia/lib:/usr/local/nvidia/lib64
ENV NVIDIA_DRIVER_CAPABILITIES=compute,utility
ENV NVIDIA_VISIBLE_DEVICES=all
ENV OLLAMA_HOST=0.0.0.0:11434
EXPOSE 11434
ENTRYPOINT ["/bin/ollama"]
CMD ["serve"]
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