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paperus-ml

Machine learning service of paperus: text embeddings for search by meaning, with ONNX Runtime on the CPU. Models are downloaded from Hugging Face on first use and unloaded when idle.

pip install paperus-ml
PAPERUS_ML_TOKEN=… paperus-ml --host 0.0.0.0   # port 3003

Settings are environment variables:

Variable Default Meaning
PAPERUS_ML_TOKEN none Shared secret; requests need Authorization: Bearer <token>
PAPERUS_ML_CACHE_PATH ~/.cache/paperus-ml Downloaded models
PAPERUS_ML_PRELOAD [] Models to load at start and keep, e.g. ["arctic-embed-m-v2"] (paperus then sends the one in use)
PAPERUS_ML_MODEL_TTL 300 Unload other models after this many idle seconds (0: never)
PAPERUS_ML_INTRA_OP_THREADS 0 CPU cores per model at start (0: all it sees); paperus' administration sets it afterwards
PAPERUS_ML_MAX_BATCH_TEXTS / _TOKENS 32 / 16384 Batch size (memory grows with both)

paperus sends its settings with PUT /config (cores, models to keep loaded). One batch runs at a time per model, using all its cores; simultaneous requests take turns batch by batch.

Most installations use the paperus-ml container image instead. Status: early version (0.0.x); expect breaking changes.

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