Re: 2.9.4 speed

[Shai Ayal]

David Bateman wrote:
> Shai Ayal wrote:
>
> > Hi all,
> >
> > With all your help I was able to install 2.9.4, using Quentin's SRPMS for
> > ufsparse and glpk and applying a patch to the makefile as detailed in a
> > previous email to the list by Ismail.
> >
> > I am testing it against 2.1.72. both versions were configured with the 
> > same
> > options and use the same blas/atlas/fftw and compilers.
> >
> > I have a some code which constructs a 201^2x201^2 sparse matrix and 
> > inverts
> > it. While the inversion speed is comparable for both versions, The part
> > which constructs the I,J,S vectors which I later turn into the sparse
> > matrix by s=sparse(I,J,S) takes almost twice as much time in 2.9.4 (12
> > seconds compared to 6 seconds). This part has a lot of loops, vector
> > concatenations etc...
> >
> > Does this sound familiar to anyone, or should I investigate further?
> A little bit more break-down in where the slow-up is happening would 
> help...

I take that to mean that I should investigate further :)

tomorrow than...

Shai



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