Gonum LAPACK

A collection of packages to provide LAPACK functionality for the Go programming language (http://golang.org)

This is work in progress. Breaking changes are likely to happen.

Installation

  go get github.com/gonum/blas

Install OpenBLAS:

  git clone https://github.com/xianyi/OpenBLAS
  cd OpenBLAS
  make

For Windows you can download binary packages for OpenBLAS at http://sourceforge.net/projects/openblas/files/

generate lapack bindings

  cd $GOPATH/src/github.com/gonum/lapack/clapack
  ./genLapack.pl -L/path/to/OpenBLAS -lopenblas

If you want to use the Intel MKL and all of your paths are properly set

  cd $GOPATH/src/github.com/gonum/lapack/clapack
  ./genLapack.pl -lmkl_rt

should work.

Packages

lapack

Defines the LAPACK API based on http://www.netlib.org/lapack/lapacke.html

lapack/clapack

Binding to a C implementation of the lapacke interface (e.g. OpenBLAS or intel MKL)

The linker flags (i.e. path to the BLAS library and library name) might have to be adapted.

The recommended (free) option for good performance on both linux and darwin is OpenBLAS.

blas/dbw

Experimental wrapper for the float64 part of the lapack interface.

You have to register an implementation before you can use the LAPACK functions:

package main

import (
	"fmt"

	"github.com/gonum/blas/cblas"
	"github.com/gonum/blas/dbw"
	"github.com/gonum/lapack/clapack"
	"github.com/gonum/lapack/dla"
)

func init() {
	dbw.Register(cblas.Blas{})
	dla.Register(clapack.Lapack{})
}

func main() {
	A := dbw.NewGeneral(3, 2, []float64{1, 2, 3, 4, 5, 6})
	B := dbw.NewGeneral(3, 2, []float64{1, 2, 1, 2, 1, 2})

	tau := dbw.Allocate(2)

	f := dla.QR(A, tau)

	f.Solve(B)

	fmt.Println(B.Data)
}

blas/zbw

Experimental wrapper for the complex128 part of the lapack interface.

Issues

If you find any bugs, feel free to file an issue on the github issue tracker. Discussions on API changes, added features, code review, or similar requests are preferred on the gonum-dev Google Group.

https://groups.google.com/forum/#!forum/gonum-dev

License

Please see github.com/gonum/license for general license information, contributors, authors, etc on the Gonum suite of packages.