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ndarray-linalg

crate docs.rs

Linear algebra package for Rust with ndarray based on external LAPACK implementations.

Examples

See examples directory.

Note: To run examples, you must specify which backend will be used (as described below). For example, you can execute the solve example with the OpenBLAS backend like this:

cargo run --example solve --features=openblas

and run all tests of ndarray-linalg with OpenBLAS

cargo test --features=openblas

Backend Features

There are three LAPACK source crates:

ndarray_linalg must link just one of them for LAPACK FFI.

[dependencies]
ndarray = "0.14"
ndarray-linalg = { version = "0.13", features = ["openblas-static"] }

Supported features are following:

Feature Link type Requirements Description
openblas-static static gcc, gfortran, make Build OpenBLAS in your project, and link it statically
openblas-system dynamic/static libopenblas-dev Seek OpenBLAS in system, and link it
netlib-static static gfortran, make Same as openblas-static except for using reference LAPACK
netlib-system dynamic/static liblapack-dev Same as openblas-system except for using reference LAPACK
intel-mkl-static static (pkg-config) Seek static library of Intel MKL from system, or download if not found, and link it statically
intel-mkl-system dynamic (pkg-config) Seek shared library of Intel MKL from system, and link it dynamically
  • You must use just one feature of them.
  • dynamic/static means it depends on what is found in the system. When the system has /usr/lib/libopenblas.so, it will be linked dynamically, and /usr/lib/libopenblas.a will be linked statically. Dynamic linking is prior to static linking.
  • Requirements notices:
    • gcc and gfortran can be another compiler, e.g. icc and ifort.
    • libopenblas-dev is package name in Debian, Ubuntu, and other derived distributions. There are several binary packages of OpenBLAS, i.e. libopenblas-{openmp,pthread,serial}-dev. It can be other names in other distributions, e.g. Fedora, ArchLinux, and so on.
    • pkg-config is used for searching Intel MKL packages in system, and it is optional. See intel-mkl-src/README.md for detail.

For library developer

If you creating a library depending on this crate, we encourage you not to link any backend:

[dependencies]
ndarray = "0.13"
ndarray-linalg = "0.12"

The cargo's feature is additive. If your library (saying lib1) set a feature openblas-static, the application using lib1 builds ndarray_linalg with openblas-static feature though they want to use intel-mkl-static backend.

See the cargo reference for detail

Tested Environments

Only x86_64 system is supported currently.

Backend Linux Windows macOS
OpenBLAS ✔️ - -
Netlib ✔️ - -
Intel MKL ✔️ ✔️ ✔️

Generate document with KaTeX

You need to set RUSTDOCFLAGS explicitly:

RUSTDOCFLAGS="--html-in-header katex-header.html" cargo doc --no-deps

This only works for --no-deps build because katex-header.html does not exists for dependent crates. If you wish to set RUSTDOCFLAGS automatically in this crate, you can put .cargo/config:

[build]
rustdocflags = ["--html-in-header", "katex-header.html"]

But, be sure that this works only for --no-deps. cargo doc will fail with this .cargo/config.

License

CAUTION Be sure that if you use intel-mkl-src backend, you have to accept Intel Simplified Software License in addition to the MIT-License or Apache-2.0 License.

Dual-licensed to be compatible with the Rust project. Licensed under the Apache License, Version 2.0 http://www.apache.org/licenses/LICENSE-2.0 or the MIT license http://opensource.org/licenses/MIT, at your option.