From: amado.alves@gmail.com
Subject: Re: Larger matrices
Date: Wed, 6 Aug 2008 11:40:09 -0700 (PDT)
Date: 2008-08-06T11:40:09-07:00 [thread overview]
Message-ID: <6346e619-9f73-4fcd-b84e-7f222c1d6912@c65g2000hsa.googlegroups.com> (raw)
In-Reply-To: vgmnvknvdnqq.z3h713hne6xd.dlg@40tude.net
> IMO, for such huge matrices and vectors, it is better to use in-place
> operations, rather than a loose functional programming style.
You mean a procedure with out parameter instead of function? Is there
such utility?
> And do you have dense 5000 x 5000 matrices? You are a hardworking man!
It's an hypertext. It starts out sparse, but then gets less sparse
with the usage because it is an adaptive hypertext system and I am
using spreading activation to create new links. Probably it will never
be very dense, but new links may appear anywhere in the matrix. And
it's only a prototype for a thesis, and the focus is on the
theoretical model not the implementation, so I was prepared to spend a
few megas of my giga ram to use the standard library if only the
compiler let me do it...
I found switches -fstack-usage and -fcallgraph-ifo (gcc) in the GNAT
manual but Gnatmake does not seem to accept this.
I also found that GNAT is calling a BLAS or LAPACK function called
"gemv" to implement matrix-vector "*" and so my diagnostics of
overflow caused by (value?) passing on the stack is probably right.
So now I want to increase the stack size. To 200M. The right Gnatmake
switch, please...
next prev parent reply other threads:[~2008-08-06 18:40 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-06 13:32 Larger matrices amado.alves
2008-08-06 14:29 ` Georg Bauhaus
2008-08-06 15:01 ` amado.alves
2008-08-06 17:29 ` amado.alves
2008-08-06 17:58 ` Dmitry A. Kazakov
2008-08-06 18:40 ` amado.alves [this message]
2008-08-07 7:44 ` Dmitry A. Kazakov
2008-08-06 18:44 ` Jeffrey R. Carter
2008-08-06 19:12 ` amado.alves
2008-08-06 23:33 ` amado.alves
2008-08-07 3:02 ` Randy Brukardt
2008-08-07 6:30 ` Georg Bauhaus
2008-08-07 8:01 ` amado.alves
2008-08-07 8:55 ` Egil Høvik
2008-08-07 19:13 ` Jeffrey R. Carter
2008-08-08 9:59 ` amado.alves
2008-08-08 10:38 ` Dmitry A. Kazakov
2008-08-08 11:29 ` Jean-Pierre Rosen
2008-08-08 13:15 ` Jeffrey Creem
2008-08-08 13:32 ` Dmitry A. Kazakov
2008-08-08 11:35 ` Georg Bauhaus
2008-08-08 12:11 ` Dmitry A. Kazakov
2008-08-08 14:11 ` Georg Bauhaus
2008-08-08 14:36 ` Dmitry A. Kazakov
2008-08-08 15:40 ` Georg Bauhaus
2008-08-08 16:37 ` Dmitry A. Kazakov
2008-08-08 17:37 ` Georg Bauhaus
2008-08-08 17:42 ` Georg Bauhaus
2008-08-08 19:51 ` Dmitry A. Kazakov
2008-08-09 7:44 ` Georg Bauhaus
2008-08-09 10:33 ` Dmitry A. Kazakov
2008-08-11 11:51 ` amado.alves
2008-08-11 13:51 ` Peter C. Chapin
2008-08-11 15:37 ` amado.alves
2008-08-13 14:03 ` John B. Matthews
2008-08-07 11:28 ` johnscpg
2008-08-07 12:35 ` Alex R. Mosteo
2008-08-07 13:40 ` amado.alves
2008-08-07 15:12 ` Alex R. Mosteo
2008-08-07 16:25 ` amado.alves
2008-08-07 18:21 ` amado.alves
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