[Trilinos-Users] VbrMatrix RAM usage

[Andrea Zonca]

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