BOLA

BOLA is a native Rust linear algebra backend inspired by BLAS/LAPACK. The purpose of this project is to provide a drop in replacement for many of BLAS/LAPACK functions with minimal dependency overhead and small binary size, ideal for embedded systems.

Features

• The library currently provides the following key functions:

  • GEMM: General matrix-matrix multiplication.
  • GETRF: LU factorisation of a general matrix.
  • POTRF: Cholesky factorisation of a symmetric positive-definite matrix.
  • TRSM: Triangular solve with multiple right-hand sides.
  • Other functions they depend on (LASWP, IDAMAX, SYRK, etc.)

• SIMD Accelerated as well as Rayon parallelised.

• Cross-Platform Support: Bola is written in stable Rust and has been tested on the following architectures:

  • x86_64 (with AVX2)
  • AArch64 (with NEON)

Examples

...
use blast::gemm::gemm;

let m = 128;
let n = 128;
let k = 128;
let lda = m;
let ldb = k;
let ldc = m;

let mut rng = rand::rng();
let a: Vec<f64> = (0..(m * k)).map(|_| rng.random()).collect();
let b: Vec<f64> = (0..(k * n)).map(|_| rng.random()).collect();
let c_init: Vec<f64> = (0..(m * n)).map(|_| rng.random()).collect();

let mut my_c = c_init.clone();

unsafe {
    gemm(
        'N', 'N', m, n, k, 1.0, a.as_ptr(), 
        lda, b.as_ptr(), ldb, 1.0, my_c.as_mut_ptr(), ldc
    );
}
...

Comparison

Comparisons run on a computer with Intel i5-14600K × 20 and 64GB RAM. Sizes of the matrices are 1024x1024, 2048x2048 and 4096x4096.

GEMM

The general matrix-matrix multiplication function is compared against MatrixMultiply and CBLAS. MatrixMultiply with threading feature enabled. The average time in milliseconds is shown.

GETRF

The LU factorisation function is compared against Lapack. The average time in milliseconds is shown.

License

MIT License - See LICENSE for details.

Support

If you'd like to support the project consider:

• Identifying the features you'd like to see implemented or bugs you'd like to fix and open an issue.
• Contributing to the code by resolving existing issues, I'm happy to have you.
• Donating to help me continue development, Buy Me a Coffee