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LLM inference server implementation based on llama.cpp.

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LLaMA Box

LLaMA box is a clean, pure API(without frontend assets) LLMs inference server rather than llama-server.

Agenda

Features

Supports

Download LLaMA Box from the latest release page please, now LLaMA Box supports the following platforms.

Backend OS/Arch Device Requirement
NVIDIA CUDA 12.4 linux/amd64
windows/amd64		 Compute capability matches 6.0, 6.1, 7.0, 7.5 ,8.0, 8.6, 8.9 or 9.0, see
https://developer.nvidia.com/cuda-gpus.
Driver version requires >=525.60.13, see
https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id4.
AMD ROCm/HIP 6.1 linux/amd64
windows/amd64		 LLVM target matches gfx906 (linux only), gfx908 (linux only), gfx90a (linux only), gfx942 (linux only), gfx1030, gfx1100, gfx1101 or gfx1102, see
https://rocm.docs.amd.com/projects/install-on-linux/en/docs-6.1.2/reference/system-requirements.html,
https://rocm.docs.amd.com/projects/install-on-windows/en/docs-6.1.2/reference/system-requirements.html.
Intel oneAPI 2024.2 linux/amd64
windows/amd64		 Support Intel oneAPI, see
https://www.intel.com/content/www/us/en/developer/articles/system-requirements/intel-oneapi-base-toolkit-system-requirements.html.
Huawei Ascend CANN 8.0 linux/amd64
linux/arm64		 Ascend 910b, see
https://www.hiascend.com/document/detail/en/CANNCommunityEdition/600alphaX/softwareinstall/instg/atlasdeploy_03_0015.html.
Moore Threads MUSA rc3.1 linux/amd64
 MTT S4000, MTT S80, see
https://en.mthreads.com.
Apple Metal 3 darwin/amd64
darwin/arm64		 Support Apple Metal, see
https://support.apple.com/en-sg/102894.
AVX2 darwin/amd64
linux/amd64
windows/amd64		 CPUs support AVX2, see
https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions_2.
Advanced SIMD (NEON) linux/arm64
windows/arm64		 CPUs support Advanced SIMD (NEON), see
https://en.wikipedia.org/wiki/ARM_architecture_family#Advanced_SIMD_(Neon).
AVX512 linux/amd64
windows/amd64		 CPUs support AVX512, see
https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#AVX-512.

Note

Since v0.0.60, the build of Linux releases are as follows:

  • "NVIDIA CUDA 12.4" and "AMD ROCm/HIP 6.1" releases are built on CentOS 7 (glibc 2.17),
  • "Intel oneAPI 2024.2" releases are built on Ubuntu 20.04 (glibc 2.31).
  • "Huawei Ascend CANN 8.0" releases are built on Ubuntu 20.04 (glibc 2.31) and OpenEuler 20.03 (glibc 2.28).
  • "Moore Threads MUSA rc3.1" releases are built on Ubuntu 22.04 (glibc 2.34).
  • "AVX2" releases are built on CentOS 7 (glibc 2.17).
  • "Advanced SIMD (NEON)" releases are built on Ubuntu 18.04 (glibc 2.27).
  • "AVX512" releases are built on RockyLinux 8.9 (glibc 2.28).

Examples

Note: LM Studio provides a fantastic UI for downloading the GGUF model from Hugging Face. The GGUF model files used in the following examples are downloaded via LM Studio.

  • Chat completion via Nous-Hermes-2-Mistral-7B-DPO model. Use GGUF files from NousResearch/Nous-Hermes-2-Mistral-7B-DPO-GGUF.

    $ # Provide 4 sessions(allowing 4 parallel chat users), with a max of 2048 tokens per session.
$ llama-box -c 8192 -np 4 --host 0.0.0.0 -m ~/.cache/lm-studio/models/NousResearch/Nous-Hermes-2-Mistral-7B-DPO-GGUF/Nous-Hermes-2-Mistral-7B-DPO.Q5_K_M.gguf

$ curl http://localhost:8080/v1/chat/completions -H "Content-Type: application/json" -d '{"model": "hermes2", "messages": [{"role":"user", "content":"Introduce Beijing in 50 words."}]}'

$ # or use the chat.sh tool
$ ./llama-box/tools/chat.sh "Introduce Beijing in 50 words."

  • Chat completion with vision explanation via LLaVA-Phi-3-Mini model. Use GGUF files from xtuner/llava-phi-3-mini-gguf.

    $ # Provide 4 session(allowing 4 parallel chat users), with a max of 2048 tokens per session.
$ llama-box -c 8192 -np 4 --host 0.0.0.0 -m ~/.cache/lm-studio/models/xtuner/llava-phi-3-mini-gguf/llava-phi-3-mini-f16.gguf --mmproj ~/.cache/lm-studio/models/xtuner/llava-phi-3-mini-gguf/llava-phi-3-mini-mmproj-f16.gguf

$ IMAGE_URL="$(echo "data:image/jpeg;base64,$(curl https://raw.githubusercontent.com/haotian-liu/LLaVA/main/llava/serve/examples/extreme_ironing.jpg --output - | base64)")"; \
  echo "{\"model\": \"llava-phi-3\", \"temperature\": 0.1, \"stop\": [\"<|end|>\"], \"messages\": [{\"role\":\"user\", \"content\": [{\"type\": \"image_url\", \"image_url\": {\"url\": \"$IMAGE_URL\"}}, {\"type\": \"text\", \"text\": \"What is unusual about this image?\"}]}]}" > /tmp/data.json

$ curl http://localhost:8080/v1/chat/completions -H "Content-Type: application/json" -d @/tmp/data.json

$ # or use the chat.sh tool
$ ./llama-box/tools/chat.sh @/tmp/data.json

  • Image generation via Stable Diffusion 3.5 Medium model. Use GGUF files from gpustack/stable-diffusion-v3-5-medium-GGUF.

    $ # Provide 1 session(allowing 1 parallel chat user).
$ llama-box -np 1 --host 0.0.0.0 -m ~/.cache/lm-studio/models/gpustack/stable-diffusion-v3.5-medium-GGUF/stable-diffusion-v3-5-medium-FP16.gguf --images

$ curl http://localhost:8080/v1/images/generations -H "Content-Type: application/json" -d '{"model": "sd3-medium", "prompt": "A lovely cat"}'

$ # or use the image_generate.sh tool
$ ./llama-box/tools/image_generate.sh "A lovely cat"

  • Draft model speculative decoding via Qwen2-7B-Instruct and Qwen2-1.5B-Instruct models. Use GGUF files from QuantFactory/Qwen2-7B-Instruct-GGUF and QuantFactory/Qwen2-1.5B-Instruct-GGUF.

    $ # Provide 4 session(allowing 4 parallel chat users), with a max of 2048 tokens per session.
$ llama-box -c 8192 -np 4 --host 0.0.0.0 -m ~/.cache/lm-studio/models/QuantFactory/Qwen2-7B-Instruct-GGUF/Qwen2-7B-Instruct.Q5_K_M.gguf -md ~/.cache/lm-studio/models/QuantFactory/Qwen2-1.5B-Instruct-GGUF/Qwen2-1.5B-Instruct.Q5_K_M.gguf --draft 8

$ curl http://localhost:8080/v1/completions -H "Content-Type: application/json" -d '{"model": "qwen2", "stream": true, "prompt": "Write a short story about a cat and a dog, more than 100 words."}'

$ # or use the chat.sh tool
$ ./llama-box/tools/chat.sh "Write a short story about a cat and a dog, more than 100 words."

  • Lookup speculative decoding via Mistral-Nemo-Instruct-2407 model. Use GGUF files from QuantFactory/Mistral-Nemo-Instruct-2407-GGUF.

    $ # Provide 2 session(allowing 2 parallel chat users), with a max of 8192 tokens per session.
$ llama-box -c 16384 -np 2 --host 0.0.0.0 -m ~/.cache/lm-studio/models/QuantFactory/Mistral-Nemo-Instruct-2407-GGUF/Mistral-Nemo-Instruct-2407.Q5_K_M.gguf --lookup-ngram-min 1 --draft 8

$ CONTENT="$(curl https://en.wikipedia.org/w/api.php\?action\=query\&format\=json\&titles\=Medusa\&prop\=extracts\&exintro\&explaintext | jq '.query.pages | to_entries | .[0].value.extract | gsub("\n"; "\\n") | gsub("\t"; "\\t")')"; \
  echo "{\"model\": \"mistral-nemo\", \"stream\": true, \"messages\": [{\"role\":\"user\", \"content\": [{\"type\": \"text\", \"text\": \"Please read the following content and summarize the article in 5 sentences.\"}, {\"type\": \"text\", \"text\": "$CONTENT"}]}]}" > /tmp/data.json

$ curl http://localhost:8080/v1/chat/completions -H "Content-Type: application/json" -d @/tmp/data.json

$ # or use the chat.sh tool
$ ./llama-box/tools/chat.sh @/tmp/data.json

  • Maximize search relevancy and RAG accuracy via jinaai/jina-reranker-v1-tiny-en model. Use GGUF files from gpustack/jina-reranker-v1-tiny-en-GGUF.

    $ # Provide 4 session(allowing 4 parallel chat users), with a max of 2048 tokens per session.
$ llama-box -c 8192 -np 4 --host 0.0.0.0 -m ~/.cache/lm-studio/models/gpustack/jina-reranker-v1-tiny-en-GGUF/jina-reranker-v1-tiny-en-FP16.gguf --rerank

$ curl http://localhost:8080/v1/rerank -H "Content-Type: application/json" -d '{"model":"jina-reranker-v1-tiny-en","query":"Organic skincare products for sensitive skin","top_n":3,"documents":["Eco-friendly kitchenware for modern homes","Biodegradable cleaning supplies for eco-conscious consumers","Organic cotton baby clothes for sensitive skin","Natural organic skincare range for sensitive skin","Tech gadgets for smart homes: 2024 edition","Sustainable gardening tools and compost solutions","Sensitive skin-friendly facial cleansers and toners","Organic food wraps and storage solutions","All-natural pet food for dogs with allergies","oga mats made from recycled materials"]}'

  • RPC server mode.

    In RPC server mode, LLaMA Box functions as the ggml backend on a remote host. This setup allows non-RPC server instances (clients) to communicate with the RPC servers, offloading computational tasks to them.

    While the RPC server facilitates the use of larger models, it requires the RPC client to transfer the necessary computational materials. This transfer can lead to increased startup times for the RPC client. Additionally, network latency and bandwidth limitations may impact the overall performance of the RPC client.

    By understanding these dynamics, users can better manage expectations and optimize their use of LLaMA Box in an RPC server environment.

    flowchart TD
clix-->|TCP|srva
clix-->|TCP|srvb
cliy-->|TCP|srvb
cliy-.->|TCP|srvn
subgraph hostn[Any]
srvn["llama-box-*-cuda/metal/... (rpc server)"]
end
subgraph hostb[Apple Mac Studio]
srvb["llama-box-*-metal (rpc server)"]
end
subgraph hosta[NVIDIA 4090]
srva["llama-box-*-cuda (rpc server)"]
end
subgraph hosty[Apple Mac Max]
cliy["llama-box-*-metal"]
end
subgraph hostx[NVIDIA 4080]
clix["llama-box-*-cuda"]
end
style hostn stroke:#66,stroke-width:2px,stroke-dasharray: 5 5
    Loading 
    $ # Start the RPC server on the main GPU 0, reserve 1 GiB memory.
$ llama-box --rpc-server-host 0.0.0.0 --rpc-server-port 8081 --rpc-server-main-gpu 0 --rpc-server-reserve-memory 1024

Usage

usage: llama-box [options]

general:

  -h,    --help, --usage          print usage and exit
         --version                show version and build info
         --system-info            show system info
  -v,    --verbose, --log-verbose 
                                  set verbosity level to infinity (i.e. log all messages, useful for debugging)
  -lv,   --verbosity, --log-verbosity V
                                  set the verbosity threshold, messages with a higher verbosity will be ignored
         --log-colors             enable colored logging

server:

         --host HOST              ip address to listen (default: 127.0.0.1)
         --port PORT              port to listen (default: 8080)
  -to    --timeout N              server read/write timeout in seconds (default: 600)
         --threads-http N         number of threads used to process HTTP requests (default: -1)
         --conn-idle N            server connection idle in seconds (default: 60)
         --conn-keepalive N       server connection keep-alive in seconds (default: 15)
  -m,    --model FILE             model path (default: models/7B/ggml-model-f16.gguf)
  -a,    --alias NAME             model name alias (default: unknown)
         --lora FILE              apply LoRA adapter (implies --no-mmap)
         --lora-scaled FILE SCALE 
                                  apply LoRA adapter with user defined scaling S (implies --no-mmap)
         --lora-init-without-apply
                                  load LoRA adapters without applying them (apply later via POST /lora-adapters) (default: disabled)
  -s,    --seed N                 RNG seed (default: -1, use random seed for -1)
  -mg,   --main-gpu N             the GPU to use for the model (default: 0)
         --metrics                enable prometheus compatible metrics endpoint (default: disabled)
         --infill                 enable infill endpoint (default: disabled)
         --embeddings             enable embedding endpoint (default: disabled)
         --images                 enable image endpoint (default: disabled)
         --rerank                 enable reranking endpoint (default: disabled)
         --slots                  enable slots monitoring endpoint (default: disabled)
         --rpc SERVERS            comma separated list of RPC servers

server/completion:

  -ngl,  --gpu-layers N           number of layers to store in VRAM
  -sm,   --split-mode SPLIT_MODE  how to split the model across multiple GPUs, one of:
                                    - none: use one GPU only
                                    - layer (default): split layers and KV across GPUs
                                    - row: split rows across GPUs, store intermediate results and KV in --main-gpu
  -ts,   --tensor-split SPLIT     fraction of the model to offload to each GPU, comma-separated list of proportions, e.g. 3,1
         --override-kv KEY=TYPE:VALUE
                                  advanced option to override model metadata by key. may be specified multiple times.
                                  types: int, float, bool, str. example: --override-kv tokenizer.ggml.add_bos_token=bool:false
         --chat-template JINJA_TEMPLATE
                                  set custom jinja chat template (default: template taken from model's metadata)
                                  only commonly used templates are accepted: https://github.com/ggerganov/llama.cpp/wiki/Templates-supported-by-llama_chat_apply_template
         --chat-template-file FILE
                                  set a file to load a custom jinja chat template (default: template taken from model's metadata)
         --slot-save-path PATH    path to save slot kv cache (default: disabled)
  -sps,  --slot-prompt-similarity N
                                  how much the prompt of a request must match the prompt of a slot in order to use that slot (default: 0.50, 0.0 = disabled)
                                  
  -tps   --tokens-per-second N    maximum number of tokens per second (default: 0, 0 = disabled, -1 = try to detect)
                                  when enabled, limit the request within its X-Request-Tokens-Per-Second HTTP header
  -t,    --threads N              number of threads to use during generation (default: -1)
  -C,    --cpu-mask M             set CPU affinity mask: arbitrarily long hex. Complements cpu-range (default: "")
  -Cr,   --cpu-range lo-hi        range of CPUs for affinity. Complements --cpu-mask
         --cpu-strict <0|1>       use strict CPU placement (default: 0)
                                  
         --prio N                 set process/thread priority (default: 0), one of:
                                    - 0-normal
                                    - 1-medium
                                    - 2-high
                                    - 3-realtime
         --poll <0...100>         use polling level to wait for work (0 - no polling, default: 50)
                                  
  -tb,   --threads-batch N        number of threads to use during batch and prompt processing (default: same as --threads)
  -Cb,   --cpu-mask-batch M       set CPU affinity mask: arbitrarily long hex. Complements cpu-range-batch (default: same as --cpu-mask)
  -Crb,  --cpu-range-batch lo-hi  ranges of CPUs for affinity. Complements --cpu-mask-batch
         --cpu-strict-batch <0|1> 
                                  use strict CPU placement (default: same as --cpu-strict)
         --prio-batch N           set process/thread priority : 0-normal, 1-medium, 2-high, 3-realtime (default: --priority)
         --poll-batch <0...100>   use polling to wait for work (default: same as --poll
  -c,    --ctx-size N             size of the prompt context (default: 4096, 0 = loaded from model)
         --no-context-shift       disables context shift on infinite text generation (default: disabled)
  -n,    --predict N              number of tokens to predict (default: -1, -1 = infinity, -2 = until context filled)
  -b,    --batch-size N           logical maximum batch size (default: 2048)
  -ub,   --ubatch-size N          physical maximum batch size (default: 512)
         --keep N                 number of tokens to keep from the initial prompt (default: 0, -1 = all)
  -fa,   --flash-attn             enable Flash Attention (default: disabled)
  -e,    --escape                 process escapes sequences (\n, \r, \t, \', \", \\) (default: true)
         --no-escape              do not process escape sequences
         --samplers SAMPLERS      samplers that will be used for generation in the order, separated by ';' (default: dry;top_k;typ_p;top_p;min_p;xtc;temperature)
         --sampling-seq SEQUENCE  simplified sequence for samplers that will be used (default: dkypmxt)
         --penalize-nl            penalize newline tokens (default: false)
         --temp T                 temperature (default: 0.8)
         --top-k N                top-k sampling (default: 40, 0 = disabled)
         --top-p P                top-p sampling (default: 0.9, 1.0 = disabled)
         --min-p P                min-p sampling (default: 0.1, 0.0 = disabled)
         --xtc-probability N      xtc probability (default: 0.0, 0.0 = disabled)
         --xtc-threshold N        xtc threshold (default: 0.1, 1.0 = disabled)
         --typical P              locally typical sampling, parameter p (default: 1.0, 1.0 = disabled)
         --repeat-last-n N        last n tokens to consider for penalize (default: 64, 0 = disabled, -1 = ctx_size)
         --repeat-penalty N       penalize repeat sequence of tokens (default: 1.0, 1.0 = disabled)
         --presence-penalty N     repeat alpha presence penalty (default: 0.0, 0.0 = disabled)
         --frequency-penalty N    repeat alpha frequency penalty (default: 0.0, 0.0 = disabled)
         --dry-multiplier N       set DRY sampling multiplier (default: 0.0, 0.0 = disabled)
         --dry-base N             set DRY sampling base value (default: 1.75)
         --dry--allowed-length N  set allowed length for DRY sampling (default: 2)
         --dry-penalty-last-n N   set DRY penalty for the last n tokens (default: -1, 0 = disable, -1 = context size)
         --dry-sequence-breaker N 
                                  add sequence breaker for DRY sampling, clearing out default breakers (
                                  ;:;";*) in the process; use "none" to not use any sequence breakers
         --dynatemp-range N       dynamic temperature range (default: 0.0, 0.0 = disabled)
         --dynatemp-exp N         dynamic temperature exponent (default: 1.0)
         --mirostat N             use Mirostat sampling, Top K, Nucleus, Tail Free and Locally Typical samplers are ignored if used (default: 0, 0 = disabled, 1 = Mirostat, 2 = Mirostat 2.0)
         --mirostat-lr N          Mirostat learning rate, parameter eta (default: 0.1)
         --mirostat-ent N         Mirostat target entropy, parameter tau (default: 5.0)
  -l     --logit-bias TOKEN_ID(+/-)BIAS
                                  modifies the likelihood of token appearing in the completion, i.e. "--logit-bias 15043+1" to increase likelihood of token ' Hello', or "--logit-bias 15043-1" to decrease likelihood of token ' Hello'
         --grammar GRAMMAR        BNF-like grammar to constrain generations (see samples in grammars/ dir) (default: '')
         --grammar-file FILE      file to read grammar from
  -j,    --json-schema SCHEMA     JSON schema to constrain generations (https://json-schema.org/), e.g. `{}` for any JSON object. For schemas w/ external $refs, use --grammar + example/json_schema_to_grammar.py instead
         --rope-scaling {none,linear,yarn}
                                  RoPE frequency scaling method, defaults to linear unless specified by the model
         --rope-scale N           RoPE context scaling factor, expands context by a factor of N
         --rope-freq-base N       RoPE base frequency, used by NTK-aware scaling (default: loaded from model)
         --rope-freq-scale N      RoPE frequency scaling factor, expands context by a factor of 1/N
         --yarn-orig-ctx N        YaRN: original context size of model (default: 0 = model training context size)
         --yarn-ext-factor N      YaRN: extrapolation mix factor (default: -1.0, 0.0 = full interpolation)
         --yarn-attn-factor N     YaRN: scale sqrt(t) or attention magnitude (default: 1.0)
         --yarn-beta-fast N       YaRN: low correction dim or beta (default: 32.0)
         --yarn-beta-slow N       YaRN: high correction dim or alpha (default: 1.0)
  -nkvo, --no-kv-offload          disable KV offload
         --cache-prompt           enable caching prompt (default: disabled)
         --cache-reuse N          min chunk size to attempt reusing from the cache via KV shifting, implicit --cache-prompt if value (default: 0)
  -ctk,  --cache-type-k TYPE      KV cache data type for K (default: f16)
  -ctv,  --cache-type-v TYPE      KV cache data type for V (default: f16)
  -dt,   --defrag-thold N         KV cache defragmentation threshold (default: 0.1, < 0 - disabled)
  -np,   --parallel N             number of parallel sequences to decode (default: 1)
  -cb,   --cont-batching          enable continuous batching (a.k.a dynamic batching) (default: enabled)
  -nocb, --no-cont-batching       disable continuous batching
         --mmproj FILE            path to a multimodal projector file for LLaVA
         --mlock                  force system to keep model in RAM rather than swapping or compressing
         --no-mmap                do not memory-map model (slower load but may reduce pageouts if not using mlock)
         --numa TYPE              attempt optimizations that help on some NUMA systems
                                    - distribute: spread execution evenly over all nodes
                                    - isolate: only spawn threads on CPUs on the node that execution started on
                                    - numactl: use the CPU map provided by numactl
                                  if run without this previously, it is recommended to drop the system page cache before using this, see https://github.com/ggerganov/llama.cpp/issues/1437
         --control-vector FILE    add a control vector
         --control-vector-scaled FILE SCALE
                                  add a control vector with user defined scaling SCALE
         --control-vector-layer-range START END
                                  layer range to apply the control vector(s) to, start and end inclusive
         --no-warmup              skip warming up the model with an empty run
         --spm-infill             use Suffix/Prefix/Middle pattern for infill (instead of Prefix/Suffix/Middle) as some models prefer this (default: disabled)
  -sp,   --special                special tokens output enabled (default: false)

server/completion/speculative:

         --draft N                number of tokens to draft for speculative decoding (default: 5)
  -md,   --model-draft FNAME      draft model for speculative decoding (default: unused)
  -ngld, --gpu-layers-draft N     number of layers to store in VRAM for the draft model
         --lookup-ngram-min N     minimum n-gram size for lookup cache (default: 0, 0 = disabled)
  -lcs,  --lookup-cache-static FILE
                                  path to static lookup cache to use for lookup decoding (not updated by generation)
  -lcd,  --lookup-cache-dynamic FILE
                                  path to dynamic lookup cache to use for lookup decoding (updated by generation)
         --pooling                pooling type for embeddings, use model default if unspecified

server/images:

         --image-max-batch N      maximum batch count (default: 4)
         --image-max-height N     image maximum height, in pixel space, must be larger than 256 (default: 1024)
         --image-max-width N      image maximum width, in pixel space, must be larger than 256 (default: 1024)
         --image-guidance N       the value of guidance during the computing phase (default: 3.500000)
         --image-strength N       strength for noising, range of [0.0, 1.0] (default: 0.750000)
         --image-sampler TYPE     sampler that will be used for generation, automatically retrieve the default value according to --model, select from euler_a;euler;heun;dpm2;dpm++2s_a;dpm++2m;dpm++2mv2;ipndm;ipndm_v;lcm
         --image-sample-steps N   number of sample steps, automatically retrieve the default value according to --model, and +10 when requesting high definition generation
         --image-cfg-scale N      for sampler, the scale of classifier-free guidance in the output phase, automatically retrieve the default value according to --model (1.0 = disabled)
         --image-schedule TYPE    denoiser sigma schedule, select from default;discrete;karras;exponential;ays;gits (default: default)
         --image-no-text-encoder-model-offload
                                  disable text-encoder(clip-l/clip-g/t5xxl) model offload
         --image-clip-l-model PATH
                                  path to the CLIP Large (clip-l) text encoder, or use --model included
         --image-clip-g-model PATH
                                  path to the CLIP Generic (clip-g) text encoder, or use --model included
         --image-t5xxl-model PATH 
                                  path to the Text-to-Text Transfer Transformer (t5xxl) text encoder, or use --model included
         --image-no-vae-model-offload
                                  disable vae(taesd) model offload
         --image-vae-model PATH   path to Variational AutoEncoder (vae), or use --model included
         --image-vae-tiling       indicate to process vae decoder in tiles to reduce memory usage (default: disabled)
         --image-taesd-model PATH 
                                  path to Tiny AutoEncoder For StableDiffusion (taesd), or use --model included
         --image-upscale-model PATH
                                  path to the upscale model, or use --model included
         --image-upscale-repeats N
                                  how many times to run upscaler (default: 1)
         --image-no-control-net-model-offload
                                  disable control-net model offload
         --image-control-net-model PATH
                                  path to the control net model, or use --model included
         --image-control-strength N
                                  how strength to apply the control net (default: 0.900000)
         --image-control-canny    indicate to apply canny preprocessor (default: disabled)

rpc-server:

         --rpc-server-host HOST   ip address to rpc server listen (default: 0.0.0.0)
         --rpc-server-port PORT   port to rpc server listen (default: 0, 0 = disabled)
         --rpc-server-main-gpu N  the GPU VRAM to use for the rpc server (default: 0, -1 = disabled, use RAM)
         --rpc-server-reserve-memory MEM
                                  reserve memory in MiB (default: 0)

Available environment variables (if the corresponding command-line option is not provided):

  • LLAMA_ARG_MODEL: equivalent to -m, --model.
  • LLAMA_ARG_MODEL_ALIAS: equivalent to -a, --model-alias.
  • LLAMA_ARG_THREADS: equivalent to -t, --threads.
  • LLAMA_ARG_CTX_SIZE: equivalent to -c, --ctx-size.
  • LLAMA_ARG_N_PARALLEL: equivalent to -np, --parallel.
  • LLAMA_ARG_BATCH: equivalent to -b, --batch-size.
  • LLAMA_ARG_UBATCH: equivalent to -ub, --ubatch-size.
  • LLAMA_ARG_N_GPU_LAYERS: equivalent to -ngl, --gpu-layers, --n-gpu-layers.
  • LLAMA_ARG_THREADS_HTTP: equivalent to --threads-http
  • LLAMA_ARG_CACHE_REUSE: equivalent to --cache-reuse
  • LLAMA_ARG_CHAT_TEMPLATE: equivalent to --chat-template
  • LLAMA_ARG_N_PREDICT: equivalent to -n, --predict.
  • LLAMA_ARG_METRICS: if set to 1, it will enable metrics endpoint (equivalent to --metrics).
  • LLAMA_ARG_SLOTS: if set to 1, it will enable slots endpoint (equivalent to --slots).
  • LLAMA_ARG_EMBEDDINGS: if set to 1, it will enable embeddings endpoint (equivalent to --embeddings).
  • LLAMA_ARG_FLASH_ATTN: if set to 1, it will enable flash attention (equivalent to -fa, --flash-attn).
  • LLAMA_ARG_CONT_BATCHING: if set to 0, it will disable continuous batching (equivalent to --no-cont-batching). This feature is enabled by default.
  • LLAMA_ARG_DEFRAG_THOLD: equivalent to -dt, --defrag-thold.
  • LLAMA_ARG_HOST: equivalent to --host
  • LLAMA_ARG_PORT: equivalent to --port
  • LLAMA_ARG_DRAFT: equivalent to --draft
  • LLAMA_ARG_MODEL_DRAFT: equivalent to -md, --model-draft.
  • LLAMA_ARG_N_GPU_LAYERS_DRAFT: equivalent to -ngld, --gpu-layers-draft.
  • LLAMA_ARG_LOOKUP_NGRAM_MIN: equivalent to --lookup-ngram-min.
  • LLAMA_ARG_LOOKUP_CACHE_STATIC: equivalent to -lcs, --lookup-cache-static.
  • LLAMA_ARG_LOOKUP_CACHE_DYNAMIC: equivalent to -lcd, --lookup-cache-dynamic.
  • LLAMA_ARG_RPC_SERVER_HOST: equivalent to --rpc-server-host.
  • LLAMA_ARG_RPC_SERVER_PORT: equivalent to --rpc-server-port.
  • LLAMA_LOG_VERBOSITY: equivalent to --log-verbosity.

Server API

The available endpoints for the LLaMA Box server mode are:

  • GET /health: Returns the heath check result of the LLaMA Box.

    RESPONSE: 
CASE 1: model is still being loaded
  {"error": {"code": 503, "message": "Loading model", "type": "unavailable_error"}}
CASE 2: model is successfully loaded and the server is ready
  {"status": "ok" }

  • GET /metrics: Returns the Prometheus compatible metrics of the LLaMA Box.

    • This endpoint is only available if the --metrics flag is enabled.
    • llamacpp:prompt_tokens_total: (Counter) Number of prompt tokens processed.
    • llamacpp:prompt_seconds_total: (Counter) Prompt process time.
    • llamacpp:tokens_predicted_total: (Counter) Number of generation tokens processed.
    • llamacpp:tokens_predicted_seconds_total: (Counter) Predict process time.
    • llamacpp:tokens_drafted_total: (Counter) Number of speculative decoding tokens processed.
    • llamacpp:tokens_drafted_accepted_total: (Counter) Number of speculative decoding tokens to be accepted.
    • llamacpp:n_decode_total: (Counter) Total number of llama_decode() calls.
    • llamacpp:n_busy_slots_per_decode: (Counter) Average number of busy slots per llama_decode() call.
    • llamacpp:prompt_tokens_seconds: (Gauge) Average prompt throughput in tokens/s.
    • llamacpp:predicted_tokens_seconds: (Gauge) Average generation throughput in tokens/s.
    • llamacpp:kv_cache_usage_ratio: (Gauge) KV-cache usage. 1 means 100 percent usage.
    • llamacpp:kv_cache_tokens: (Gauge) KV-cache tokens.
    • llamacpp:requests_processing: (Gauge) Number of request processing.
    • llamacpp:requests_deferred: (Gauge) Number of request deferred.
    RESPONSE:
# HELP llamacpp:prompt_tokens_total Number of prompt tokens processed.
....

  • GET /props: Returns current server settings.

    RESPONSE:
{
  "chat_template": "...",
  "default_generation_settings": {...},
  "total_slots": 4
}

  • GET /slots: Returns the current slots processing state.

    • If query param ?fail_on_no_slot=1 is set, this endpoint will respond with status code 503 if there is no available slots.
    • This endpoint is only available if the --slots flag is provided.
    • slot[i].state == 0 is idle, otherwise processing.
    RESPONSE:
[
  {
    "id": 0,
    "id_task": -1,
    "state": 0,
    ...
  },
  ...
]

  • POST /slots/:id_slot?action={save|restore|erase}: Operate specific slot via ID.

    • This endpoint is only available if the --slots flag is provided and --slot-save-path is provided.

  • POST /infill: Returns the completion of the given prompt.

    • This is only work to Text-To-Text models.
    • This endpoint is only available if the --infill flag is enabled.

  • POST /tokenize: Convert text to tokens.

    • This is only work to Text-To-Text or Embedding models.
    REQUEST :
{
  "content": "",
  "add_special": false,
  "with_pieces": false
}

RESPONSE: 
CASE 1: without pieces
  {
    "tokens": [123, ...]
  }
CASE 2: with pieces
  {
    "tokens": [
      {"id": 123, "piece": "Hello"},
      ...
    ]
  }

  • POST /detokenize: Convert tokens to text.

    • This is only work to Text-To-Text or Embedding models.
    REQUEST :
{
  "tokens": [123, ...]
}

RESPONSE: 
{
  "content": "..."
}

  • GET /lora-adapters: Returns the current LoRA adapters.

    • This is only work to Text-To-Text/Text-To-Image/Image-To-Image models.
    • This endpoint is only available if any LoRA adapter is applied with --lora or --lora-scaled.
    RESPONSE: 
[
  {
    "id": 0, 
    "path": "...", 
    "scale": 1.0
  },
  ...
]

  • POST /lora-adapters: Operate LoRA adapters apply. To disable an LoRA adapter, either remove it from the list or set scale to 0.

    • This is only work to Text-To-Text/Text-To-Image/Image-To-Image models.
    • This endpoint is only available if any LoRA adapter is applied and --lora-init-without-apply is provided.
    REQUEST :
[
  {
    "id": 0, 
    "scale": 0.2
  },
  ...
]

  • POST /completion: Returns the completion of the given prompt.

    • This is only work to Text-To-Text models.

  • GET /v1/models: (OpenAI-compatible) Returns the list of available models, see https://platform.openai.com/docs/api-reference/models/list.

  • POST /v1/chat/completions (OpenAI-compatible) Returns the completion of the given prompt, see https://platform.openai.com/docs/api-reference/chat/create.

  • POST /v1/embeddings: (OpenAI-compatible) Returns the embeddings of the given prompt, see https://platform.openai.com/docs/api-reference/embeddings/create.

    • This is only work to Text-To-Text or Embedding models.
    • This endpoint is available if the --embeddings or --rerank flag is enabled.

  • POST /v1/completions: (LEGACY OpenAI-compatible) Returns the completion of the given prompt, see https://platform.openai.com/docs/api-reference/completions/create.

    • This is only work to Text-To-Text models.

  • POST /v1/images/generations: (OpenAI-compatible) Returns a generated image from the given prompt, see https://platform.openai.com/docs/api-reference/images/generations/create.

    • This is only work to Text-To-Image models.
    • This endpoint is available if the --images flag is enabled.
    • This endpoint supports stream: true to return the progressing of the generation. 
      REQUEST :
{
  "n": 1,
  "response_format": "b64_json",
  "size": "512x512",
  "quality": "standard",
  "stream": true,
  "prompt": "A lovely cat"
}

RESPONSE:
data: {"created":1731916353,"data":[{"index":0,"object":"image.chunk","progress":10.0}], ...}
...
data: {"created":1731916371,"data":[{"index":0,"object":"image.chunk","progress":50.0}], ...}
...
data: {"created":1731916371,"data":[{"index":0,"object":"image.chunk","progress":100.0,"b64_json":"..."}], "usage":{"generation_per_second":...,"time_per_generation_ms":...,"time_to_process_ms":...}, ...}
data: [DONE]

  • POST /v1/images/edits: (OpenAI-compatible) Returns an edited image from the given prompt and initial image, see https://platform.openai.com/docs/api-reference/images/edits/create.

    • This is only work to Image-To-Image models.
    • This endpoint is available if the --images flag is enabled.
    • This endpoint supports stream: true to return the progressing of the generation. 
      REQUEST :
"n"=1&"response_format"="b64_json"&"size"="512x512"&"quality"="standard"&"stream"=true&"prompt"="A lovely cat"&"image"="..."

RESPONSE:
CASE 1: correct input image
  data: {"created":1731916353,"data":[{"index":0,"object":"image.chunk","progress":10.0}], ...}
  ...
  data: {"created":1731916371,"data":[{"index":0,"object":"image.chunk","progress":50.0}], ...}
  ...
  data: {"created":1731916371,"data":[{"index":0,"object":"image.chunk","progress":100.0,"b64_json":"..."}], "usage":{"generation_per_second":...,"time_per_generation_ms":...,"time_to_process_ms":...}, ...}
  data: [DONE]
CASE 2: illegal input image
  error: {"code": 400, "message": "Invalid image", "type": "invalid_request_error"}

  • POST /v1/rerank: Returns the completion of the given prompt via lookup cache.

    • This is only work to Reranker models, like bge-reranker-v2-m3.
    • This endpoint is only available if the --rerank flag is provided.
    • This is unavailable for the GGUF files created before llama.cpp#pr9510.

Tools

It was so hard to find a Chat UI that was directly compatible with OpenAI, that mean, no installation required (I can live with docker run), no tokens (or optional), no Ollama required, just a simple RESTful API.

So we are inspired by the llama.cpp/chat.sh and adjust it to interact with LLaMA Box.

All you need is a Bash shell, curl and jq.

  • chat.sh: A simple script to interact with the /v1/chat/completions endpoint.
  • image_generate.sh: Script to interact with the /v1/images/generations endpoint.
  • image_edit.sh: Script to interact with the /v1/images/edits endpoint.
  • completion.sh: A simple script to interact with the /completion endpoint.

Note

Both completion.sh and chat.sh are used for talking with the LLaMA Box, but completion.sh embeds a fixed pattern to format the given prompt format, while chat.sh can leverage the chat template from the model's metadata or user defined.

$ # one-shot chat
$ MAX_TOKENS=4096 ./llama-box/tools/chat.sh "Tell me a joke"

$ # interactive chat
$ MAX_TOKENS=4096 ./llama-box/tools/chat.sh

$ # one-shot image generation
$ ./llama-box/tools/image_generate.sh "A lovely cat"

$ # interactive image generation
$ ./llama-box/tools/image_generate.sh

$ # one-shot image editing
$ IMAGE=/path/to/image.png ./llama-box/tools/image_edit.sh "A lovely cat"

$ # interactive image editing
$ IMAGE=/path/to/image.png ./llama-box/tools/image_generate.sh

$ # one-shot completion
$ N_PREDICT=4096 TOP_K=1 ./llama-box/tools/completion.sh "// Quick-sort implementation in C (4 spaces indentation + detailed comments) and sample usage:\n\n#include"

$ # interactive completion
$ N_PREDICT=4096 ./llama-box/tools/completion.sh

License

MIT

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LLM inference server implementation based on llama.cpp.

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