SERAPH — ONNX Runtime Backend

Maximum encoder throughput on NVIDIA GPUs.

This is the ONNX Runtime variant of SERAPH. It uses the ONNX Runtime CUDA Execution Provider for encoding, delivering ~3x faster ingest throughput compared to the standard GPU (candle) build.

For the standard build that works everywhere (GPU with CPU fallback), install seraph-db instead.

Install

pip install seraph-db-onnx

This automatically installs onnxruntime-gpu as a dependency. SERAPH discovers the ORT shared libraries from the installed package at runtime.

GPU Requirements (optional)

For CUDA-accelerated encoding:

NVIDIA GPU with compute capability >= 7.0 (Volta or newer)
NVIDIA driver >= 580 on Windows, >= 560 on Linux (the two are built with different CUDA toolkits, which sets the PTX floor)
CUDA toolkit with cuBLAS and cuDNN 9.x — CUDA 11.x, 12.x and 13.x are all detected

If the CUDA EP fails to initialize (missing toolkit, incompatible driver), encoding falls back to CPU automatically — no configuration needed.

Advanced: Custom ORT Location

Set ORT_DYLIB_PATH to override the default ORT discovery:

ORT_DYLIB_PATH=/path/to/onnxruntime.dll python my_app.py

Quick Start

import seraph

cfg = seraph.StoreConfig(model_id="BAAI/bge-small-en-v1.5")
store = seraph.SeraphStore.create("my_store.sfg", cfg)

text = "The quick brown fox jumps over the lazy dog."
store.put(text.encode(), store.encode(text))    # content bytes + embedding

for hit in store.search_text("fast animal"):     # text query, encodes internally
    print(f"{hit.score:.3f}  {hit.snippet}")

store.close()

The API is identical to seraph-db — only the encoder backend differs.

API Reference

Licensing

SERAPH is proprietary software licensed by Tree D Interactive LLC. See the License Agreement and Pricing Schedule for full terms.

Metadata

Release files for seraph-db-onnx 0.3.1

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Built distributions (wheels)

Table of built distributions (wheels) for seraph-db-onnx 0.3.1
File	Interpreter	ABI	Platform	Reset
seraph_db_onnx-0.3.1-cp38-abi3-win_amd64.whl 6.6 MB Oct 11, 2026 Without provenance	CPython 3.8	abi3	Windows x86-64	Details
seraph_db_onnx-0.3.1-cp38-abi3-manylinux2014_x86_64.whl 7.4 MB Oct 11, 2026 Without provenance	CPython 3.8	abi3	Linux glibc 2.17+ x86-64	Details

Total release size: 14.1 MB

Release files / seraph_db_onnx-0.3.1-cp38-abi3-win_amd64.whl

Download URL	seraph_db_onnx-0.3.1-cp38-abi3-win_amd64.whl
Size	6.6 MB
Tags	CPython 3.8 Windows x86-64 abi3
SHA-256 checksum How to use checksums	`87cf9f10d7d43b5373a7b7e0be9aee79eaae722d3ef48c888c309e5f077b1ba3`
BLAKE2b-256 checksum How to use checksums	`4243bc03be9fd3a125fef9d585da1e2deeafaf00ab06a58db4b7b9b7a0d5ad63`
Upload date	Oct 11, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.13.2`

Release files / seraph_db_onnx-0.3.1-cp38-abi3-manylinux2014_x86_64.whl

Download URL	seraph_db_onnx-0.3.1-cp38-abi3-manylinux2014_x86_64.whl
Size	7.4 MB
Tags	CPython 3.8 Linux glibc 2.17+ x86-64 abi3
SHA-256 checksum How to use checksums	`22c741ca327d439adbe8b93dfc65dc4b908b379e19a546adbf45bff25af3b4fb`
BLAKE2b-256 checksum How to use checksums	`a68d302fa492a81d916dc1d33c0e66fb28a75d4cec66fd6505ae6bc1ba0ea8fd`
Upload date	Oct 11, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.13.2`

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