scikit-umfpack 0.2.3

Python interface to UMFPACK sparse direct solver.

scikit-umfpack

scikit-umfpack provides wrapper of UMFPACK sparse direct solver to SciPy.

Usage:

`python >>> from scikits.umfpack import spsolve, splu >>> lu = splu(A) >>> x = spsolve(A, b) `

Installing scikits.umfpack also enables using UMFPACK solver via some of the scipy.sparse.linalg functions, for SciPy >= 0.14.0. Note you will need to have installed UMFPACK before hand. UMFPACK is parse of [SuiteSparse](http://faculty.cse.tamu.edu/davis/suitesparse.html).

Dependencies

scikit-umfpack depends on NumPy, SciPy, SuiteSparse, and swig is a build-time dependency.

Building SuiteSparse

SuiteSparse may be available from your package manager or as a prebuilt shared library. If that is the case use that if possible. Installation on Ubuntu 14.04 can be achieved with

` sudo apt-get install libsuitesparse-dev `

Otherwise, you will need to build from source. Unfortunately, SuiteSparse’s makefiles do not support building a shared library out of the box. You may find [Stefan Fürtinger instructions helpful](http://fuertinger.lima-city.de/research.html#building-numpy-and-scipy).

Furthmore, building METIS-4.0, an optional but important compile time dependency of SuiteSparse, has problems on newer GCCs. This [patch and instructions](http://www.math-linux.com/mathematics/linear-systems/article/how-to-patch-metis-4-0-error-conflicting-types-for-__log2) from Nadir Soualem are helpful for getting a working METIS build.

Otherwise, I commend you to the documentation.

Install

This package uses distutils, which is the default way of installing python modules. In the directory scikit-umfpack (the same as the file you are reading now) do:

` python setup.py install `

or for a local installation:

` python setup.py install --root=<DIRECTORY> `

Development

Code

You can check the latest sources with the command:

` git clone https://github.com/scikit-umfpack/scikit-umfpack.git `

or if you have write privileges:

` git clone [e-mail]:scikit-umfpack/scikit-umfpack.git `

Testing

After installation, you can launch the test suite from outside the source directory (you will need to have the nose package installed):

` nosetests -v scikits.umfpack `