[Trilinos-Users] VbrMatrix RAM usage

[Williams, Alan B]

Andrea,
I've been out on travel for the last week. I'll try to take a look at this and give you more information in the next day or two.
Alan


> -----Original Message-----
> From: trilinos-users-bounces at software.sandia.gov [mailto:trilinos-
> users-bounces at software.sandia.gov] On Behalf Of Andrea Zonca
> Sent: Friday, March 04, 2011 12:20 PM
> To: trilinos-users at software.sandia.gov
> Subject: Re: [Trilinos-Users] VbrMatrix RAM usage
> 
> hi,
> I am really sorry to bug you again but this is really a showstopper for
> my work.
> I continued my debugging on the Carver [1] cluster, with a different
> compiler (PGI),
> with different trilinos version, 10.4.0, getting the same results, a
> VBR matrix storing 1.5 million doubles (about 115 MB)
> has a memory usage of about 500MB per processor when using 2
> processors.
> Could somebody please spend 10 minutes testing my very simple code in
> [2] and
> at least tell me if it is just me or you get the same results?
> I was wondering whether I should try Tpetra, however I need the
> functionality of FEVbrMatrix (setting elements on different
> processors) that is not available in Tpetra.
> thanks,
> andrea zonca
> 
> [1] http://www.nersc.gov/nusers/systems/carver/
> [2] https://gist.github.com/848310
> 
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