[petsc-users] Cray perftools

[Adrian Croucher]

hi Jed,

On 2/22/22 11:45, Jed Brown wrote:
> If you can share before/after output from -log_view, it would likely 
> help localize.

Unfortunately there aren't any "before" logs, because -log_view wasn't 
used while everything was going well.

It looks like it might be related to I/O partly based on comparing logs 
with those from runs on other machines (not very comparable ones, 
admittedly) and also experimenting with things like turning file (HDF5) 
output from the code off.

>
> Another unintrusive thing (if you're allowed to run Linux perf) is to
Looks like that is not available on the cluster, but will check and see 
if some module can be loaded to get it.

On 2/22/22 12:10, Barry Smith wrote:

>   Have any of the modules loaded changed? Or the shared libraries that are in any of the modules?
Will check. We build most of the important dependencies (e.g. 
blaslapack, netcdf, exodusii, hdf5, scotch, chaco) ourselves using 
--download-xxx in the PETSc build.

- Adrian

-- 
Dr Adrian Croucher
Senior Research Fellow
Department of Engineering Science
University of Auckland, New Zealand
email: a.croucher at auckland.ac.nz
tel: +64 (0)9 923 4611