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feat(mlx): add mlx backend (#6049)
* chore: allow to install with pip Signed-off-by: Ettore Di Giacinto <[email protected]> * WIP Signed-off-by: Ettore Di Giacinto <[email protected]> * Make the backend to build and actually work Signed-off-by: Ettore Di Giacinto <[email protected]> * List models from system only Signed-off-by: Ettore Di Giacinto <[email protected]> * Add script to build darwin python backends Signed-off-by: Ettore Di Giacinto <[email protected]> * Run protogen in libbackend Signed-off-by: Ettore Di Giacinto <[email protected]> * Detect if mps is available across python backends Signed-off-by: Ettore Di Giacinto <[email protected]> * CI: try to build backend Signed-off-by: Ettore Di Giacinto <[email protected]> * Debug CI Signed-off-by: Ettore Di Giacinto <[email protected]> * Fixups Signed-off-by: Ettore Di Giacinto <[email protected]> * Fixups Signed-off-by: Ettore Di Giacinto <[email protected]> * Index mlx-vlm Signed-off-by: Ettore Di Giacinto <[email protected]> * Remove mlx-vlm Signed-off-by: Ettore Di Giacinto <[email protected]> * Drop CI test Signed-off-by: Ettore Di Giacinto <[email protected]> --------- Signed-off-by: Ettore Di Giacinto <[email protected]>
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‎.github/workflows/backend.yml

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@@ -945,6 +945,19 @@ jobs:
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backend: "kitten-tts"
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dockerfile: "./backend/Dockerfile.python"
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context: "./backend"
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mlx-darwin:
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uses: ./.github/workflows/backend_build_darwin.yml
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with:
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backend: "mlx"
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build-type: "mps"
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go-version: "1.24.x"
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tag-suffix: "-metal-darwin-arm64-mlx"
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runs-on: "macOS-14"
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secrets:
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dockerUsername: ${{ secrets.DOCKERHUB_USERNAME }}
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dockerPassword: ${{ secrets.DOCKERHUB_PASSWORD }}
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quayUsername: ${{ secrets.LOCALAI_REGISTRY_USERNAME }}
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quayPassword: ${{ secrets.LOCALAI_REGISTRY_PASSWORD }}
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llama-cpp-darwin:
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runs-on: macOS-14
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strategy:
@@ -1118,4 +1131,4 @@ jobs:
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run: |
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for tag in $(echo "${{ steps.quaymeta.outputs.tags }}" | tr ',' '\n'); do
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crane push llama-cpp.tar $tag
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done
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done

‎.github/workflows/backend_build_darwin.yml

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---
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name: 'build darwin python backend container images (reusable)'
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on:
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workflow_call:
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inputs:
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backend:
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description: 'Backend to build'
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required: true
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type: string
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build-type:
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description: 'Build type (e.g., mps)'
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default: ''
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type: string
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go-version:
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description: 'Go version to use'
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default: '1.24.x'
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type: string
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tag-suffix:
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description: 'Tag suffix for the built image'
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required: true
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type: string
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runs-on:
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description: 'Runner to use'
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default: 'macOS-14'
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type: string
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secrets:
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dockerUsername:
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required: false
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dockerPassword:
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required: false
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quayUsername:
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required: true
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quayPassword:
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required: true
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jobs:
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darwin-backend-build:
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runs-on: ${{ inputs.runs-on }}
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strategy:
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matrix:
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go-version: ['${{ inputs.go-version }}']
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steps:
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- name: Clone
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uses: actions/checkout@v5
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with:
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submodules: true
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- name: Setup Go ${{ matrix.go-version }}
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uses: actions/setup-go@v5
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with:
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go-version: ${{ matrix.go-version }}
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cache: false
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# You can test your matrix by printing the current Go version
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- name: Display Go version
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run: go version
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- name: Dependencies
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run: |
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brew install protobuf grpc make protoc-gen-go protoc-gen-go-grpc libomp llvm
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- name: Build ${{ inputs.backend }}-darwin
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run: |
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make protogen-go
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BACKEND=${{ inputs.backend }} BUILD_TYPE=${{ inputs.build-type }} make build-darwin-python-backend
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- name: Upload ${{ inputs.backend }}.tar
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uses: actions/upload-artifact@v4
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with:
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name: ${{ inputs.backend }}-tar
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path: backend-images/${{ inputs.backend }}.tar
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darwin-backend-publish:
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needs: darwin-backend-build
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if: github.event_name != 'pull_request'
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runs-on: ubuntu-latest
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steps:
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- name: Download ${{ inputs.backend }}.tar
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uses: actions/download-artifact@v5
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with:
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name: ${{ inputs.backend }}-tar
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path: .
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- name: Install crane
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run: |
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curl -L https://github.com/google/go-containerregistry/releases/latest/download/go-containerregistry_Linux_x86_64.tar.gz | tar -xz
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sudo mv crane /usr/local/bin/
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- name: Log in to DockerHub
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run: |
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echo "${{ secrets.dockerPassword }}" | crane auth login docker.io -u "${{ secrets.dockerUsername }}" --password-stdin
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- name: Log in to quay.io
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run: |
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echo "${{ secrets.quayPassword }}" | crane auth login quay.io -u "${{ secrets.quayUsername }}" --password-stdin
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- name: Docker meta
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id: meta
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uses: docker/metadata-action@v5
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with:
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images: |
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localai/localai-backends
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tags: |
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type=ref,event=branch
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type=semver,pattern={{raw}}
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type=sha
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flavor: |
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latest=auto
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suffix=${{ inputs.tag-suffix }},onlatest=true
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- name: Docker meta
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id: quaymeta
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uses: docker/metadata-action@v5
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with:
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images: |
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quay.io/go-skynet/local-ai-backends
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tags: |
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type=ref,event=branch
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type=semver,pattern={{raw}}
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type=sha
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flavor: |
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latest=auto
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suffix=${{ inputs.tag-suffix }},onlatest=true
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- name: Push Docker image (DockerHub)
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run: |
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for tag in $(echo "${{ steps.meta.outputs.tags }}" | tr ',' '\n'); do
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crane push ${{ inputs.backend }}.tar $tag
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done
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- name: Push Docker image (Quay)
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run: |
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for tag in $(echo "${{ steps.quaymeta.outputs.tags }}" | tr ',' '\n'); do
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crane push ${{ inputs.backend }}.tar $tag
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done

‎Makefile

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Original file line numberDiff line numberDiff line change
@@ -132,43 +132,6 @@ test: test-models/testmodel.ggml protogen-go
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$(MAKE) test-tts
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$(MAKE) test-stablediffusion
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backends/diffusers: docker-build-diffusers docker-save-diffusers build
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./local-ai backends install "ocifile://$(abspath ./backend-images/diffusers.tar)"
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backends/llama-cpp: docker-build-llama-cpp docker-save-llama-cpp build
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./local-ai backends install "ocifile://$(abspath ./backend-images/llama-cpp.tar)"
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backends/piper: docker-build-piper docker-save-piper build
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./local-ai backends install "ocifile://$(abspath ./backend-images/piper.tar)"
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backends/stablediffusion-ggml: docker-build-stablediffusion-ggml docker-save-stablediffusion-ggml build
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./local-ai backends install "ocifile://$(abspath ./backend-images/stablediffusion-ggml.tar)"
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backends/whisper: docker-build-whisper docker-save-whisper build
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./local-ai backends install "ocifile://$(abspath ./backend-images/whisper.tar)"
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backends/silero-vad: docker-build-silero-vad docker-save-silero-vad build
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./local-ai backends install "ocifile://$(abspath ./backend-images/silero-vad.tar)"
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backends/local-store: docker-build-local-store docker-save-local-store build
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./local-ai backends install "ocifile://$(abspath ./backend-images/local-store.tar)"
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backends/huggingface: docker-build-huggingface docker-save-huggingface build
157-
./local-ai backends install "ocifile://$(abspath ./backend-images/huggingface.tar)"
158-
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backends/rfdetr: docker-build-rfdetr docker-save-rfdetr build
160-
./local-ai backends install "ocifile://$(abspath ./backend-images/rfdetr.tar)"
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backends/kitten-tts: docker-build-kitten-tts docker-save-kitten-tts build
163-
./local-ai backends install "ocifile://$(abspath ./backend-images/kitten-tts.tar)"
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backends/kokoro: docker-build-kokoro docker-save-kokoro build
166-
./local-ai backends install "ocifile://$(abspath ./backend-images/kokoro.tar)"
167-
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backends/llama-cpp-darwin: build
169-
bash ./scripts/build-llama-cpp-darwin.sh
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./local-ai backends install "ocifile://$(abspath ./backend-images/llama-cpp.tar)"
171-
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########################################################
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## AIO tests
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########################################################
@@ -361,6 +324,51 @@ docker-image-intel:
361324
## Backends
362325
########################################################
363326

327+
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backends/diffusers: docker-build-diffusers docker-save-diffusers build
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./local-ai backends install "ocifile://$(abspath ./backend-images/diffusers.tar)"
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backends/llama-cpp: docker-build-llama-cpp docker-save-llama-cpp build
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./local-ai backends install "ocifile://$(abspath ./backend-images/llama-cpp.tar)"
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backends/piper: docker-build-piper docker-save-piper build
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./local-ai backends install "ocifile://$(abspath ./backend-images/piper.tar)"
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backends/stablediffusion-ggml: docker-build-stablediffusion-ggml docker-save-stablediffusion-ggml build
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./local-ai backends install "ocifile://$(abspath ./backend-images/stablediffusion-ggml.tar)"
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backends/whisper: docker-build-whisper docker-save-whisper build
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./local-ai backends install "ocifile://$(abspath ./backend-images/whisper.tar)"
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backends/silero-vad: docker-build-silero-vad docker-save-silero-vad build
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./local-ai backends install "ocifile://$(abspath ./backend-images/silero-vad.tar)"
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backends/local-store: docker-build-local-store docker-save-local-store build
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./local-ai backends install "ocifile://$(abspath ./backend-images/local-store.tar)"
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backends/huggingface: docker-build-huggingface docker-save-huggingface build
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./local-ai backends install "ocifile://$(abspath ./backend-images/huggingface.tar)"
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backends/rfdetr: docker-build-rfdetr docker-save-rfdetr build
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./local-ai backends install "ocifile://$(abspath ./backend-images/rfdetr.tar)"
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backends/kitten-tts: docker-build-kitten-tts docker-save-kitten-tts build
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./local-ai backends install "ocifile://$(abspath ./backend-images/kitten-tts.tar)"
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backends/kokoro: docker-build-kokoro docker-save-kokoro build
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./local-ai backends install "ocifile://$(abspath ./backend-images/kokoro.tar)"
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backends/llama-cpp-darwin: build
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bash ./scripts/build/llama-cpp-darwin.sh
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./local-ai backends install "ocifile://$(abspath ./backend-images/llama-cpp.tar)"
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365+
build-darwin-python-backend:
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bash ./scripts/build/python-darwin.sh
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backends/mlx: build
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BACKEND=mlx BUILD_TYPE=mps $(MAKE) build-darwin-python-backend
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./local-ai backends install "ocifile://$(abspath ./backend-images/mlx.tar)"
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backend-images:
365373
mkdir -p backend-images
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‎backend/index.yaml

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nvidia: "cuda12-vllm"
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amd: "rocm-vllm"
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intel: "intel-vllm"
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- &mlx
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name: "mlx"
132+
uri: "quay.io/go-skynet/local-ai-backends:latest-metal-darwin-arm64-mlx"
133+
icon: https://avatars.githubusercontent.com/u/102832242?s=200&v=4
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urls:
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- https://github.com/ml-explore/mlx-lm
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mirrors:
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- localai/localai-backends:latest-metal-darwin-arm64-mlx
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license: MIT
139+
description: |
140+
Run LLMs with MLX
141+
tags:
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- text-to-text
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- LLM
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- MLX
130145
- &rerankers
131146
name: "rerankers"
132147
alias: "rerankers"
@@ -371,6 +386,11 @@
371386
- text-to-speech
372387
- TTS
373388
license: apache-2.0
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- !!merge <<: *mlx
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name: "mlx-development"
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uri: "quay.io/go-skynet/local-ai-backends:master-metal-darwin-arm64-mlx"
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mirrors:
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- localai/localai-backends:master-metal-darwin-arm64-mlx
374394
- !!merge <<: *kitten-tts
375395
name: "kitten-tts-development"
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uri: "quay.io/go-skynet/local-ai-backends:master-kitten-tts"

‎backend/python/bark/Makefile

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.PHONY: ttsbark
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ttsbark: protogen
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ttsbark:
33
bash install.sh
44

55
.PHONY: run
6-
run: protogen
6+
run: ttsbark
77
@echo "Running bark..."
88
bash run.sh
99
@echo "bark run."
1010

1111
.PHONY: test
12-
test: protogen
12+
test: ttsbark
1313
@echo "Testing bark..."
1414
bash test.sh
1515
@echo "bark tested."
1616

17-
.PHONY: protogen
18-
protogen: backend_pb2_grpc.py backend_pb2.py
19-
2017
.PHONY: protogen-clean
2118
protogen-clean:
2219
$(RM) backend_pb2_grpc.py backend_pb2.py
2320

24-
backend_pb2_grpc.py backend_pb2.py:
25-
python3 -m grpc_tools.protoc -I../.. -I./ --python_out=. --grpc_python_out=. backend.proto
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.PHONY: clean
2822
clean: protogen-clean
2923
rm -rf venv __pycache__

‎backend/python/chatterbox/Makefile

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.PHONY: coqui
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coqui: protogen
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.PHONY: chatterbox
2+
chatterbox:
33
bash install.sh
44

55
.PHONY: run
6-
run: protogen
6+
run: chatterbox
77
@echo "Running coqui..."
88
bash run.sh
99
@echo "coqui run."
1010

1111
.PHONY: test
12-
test: protogen
12+
test: chatterbox
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@echo "Testing coqui..."
1414
bash test.sh
1515
@echo "coqui tested."
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17-
.PHONY: protogen
18-
protogen: backend_pb2_grpc.py backend_pb2.py
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2017
.PHONY: protogen-clean
2118
protogen-clean:
2219
$(RM) backend_pb2_grpc.py backend_pb2.py
2320

24-
backend_pb2_grpc.py backend_pb2.py:
25-
python3 -m grpc_tools.protoc -I../.. -I./ --python_out=. --grpc_python_out=. backend.proto
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2721
.PHONY: clean
2822
clean: protogen-clean
2923
rm -rf venv __pycache__

‎backend/python/chatterbox/backend.py

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@@ -41,7 +41,9 @@ def LoadModel(self, request, context):
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else:
4242
print("CUDA is not available", file=sys.stderr)
4343
device = "cpu"
44-
44+
mps_available = hasattr(torch.backends, "mps") and torch.backends.mps.is_available()
45+
if mps_available:
46+
device = "mps"
4547
if not torch.cuda.is_available() and request.CUDA:
4648
return backend_pb2.Result(success=False, message="CUDA is not available")
4749

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