[SciPy-dev] sparse matrix support status
nwagner at mecha.uni-stuttgart.de
Tue Nov 22 14:16:23 CST 2005
On Tue, 22 Nov 2005 15:05:10 -0500
Jonathan Guyer <guyer at nist.gov> wrote:
> On Oct 7, 2005, at 4:00 PM, I wrote:
>> regardless, pysparse is BSD
>> licensed, so it's perfectly legal to use his code to
>> scipy.sparse (assuming that rigorous benchmarking
>>determines that there
>> are, in fact, improvements to be made). We'll do some
>>tests and, if a
>> merge is warranted, we'll run it by Roman out of
> I've finally done some benchmarking of scipy.sparse and
> posted my results and comments on plone[*]:
> Bottom line is that, with a couple of exceptions,
>PySparse is both
> faster and less memory intensive than SciPy. I don't
> anything can be lifted from PySparse to improve SciPy's
> [*] Not that this comes as a surprise to anybody here,
>but the SciPy
> plone wiki is scary slow. I also couldn't get it to
>accept reST, even
> though I've seen other people using it there.
> Jonathan E. Guyer, PhD
> Metallurgy Division
> National Institute of Standards and Technology
> Scipy-dev mailing list
> Scipy-dev at scipy.net
I had a short look on your comments.
Actually, you can import matrices given in matrixmarket
Help on function mmread in module scipy.io.mmio:
Reads the contents of a Matrix Market file 'filename'
into a matrix.
source - Matrix Market filename (extensions
or open file object.
a - sparse or full matrix
Are you aware of a sparse eigensolver for scipy ?
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