matter-labs-archive / belle_cuda

Implementation of various primitives for bellman using CUDA (WIP)

About

This repository contains alpha stage (highly WiP) primitives for typical operations required for various pairing based proof systems - finite field operations, FFT, EC point arithmetic and multiexponentiation. All operations implemented are only for G1 group of pairing friendly curve BN254 (Ethereum curve).

There is also an implementation of 70% of the work required for Groth16 prover with interface for intergration with bellman_ce Rust crate.

Instruction

• Install CUDA 10.0 and Cmake 3.9+
• cmake --release .
• make
• in some folder clone ff, pairing and bellman repositories from Matter Labs
• checkout gpu branches in all of them
• copy file sources/libcuda.so into the bellman directory
• try to run tests cargo test --release -- --nocapture test_mimc_bn256_gpu_all to get some benchmark results and validity checks.
• you can also change const MIMC_ROUNDS: usize = 16000000; in a file bellman/tests/mimc.rs to reduce number of constrains in a test circuits if you run out of memory (RAM or GPU memory)