[petsc-dev] [GPU] Performance on Fermi

[Keita Teranishi]

Jed,

I usually manually edit petscconf.h and petscvariables to change the installation configurations for Cray XT/XE.   The problem is configure script of PETSc picks up wrong variables and #define macros because the OS and library setting on the login node is different from the compute node. 

This particular case is just a mistake in configure script (and it's not a big deal to fix), but it will be great if you have any ideas to avoid picking up wrong settings.  

Thanks,
================================
 Keita Teranishi
 Scientific Library Group
 Cray, Inc.
 keita at cray.com
================================


-----Original Message-----
From: Jed Brown [mailto:five9a2 at gmail.com] On Behalf Of Jed Brown
Sent: Friday, August 27, 2010 4:29 PM
To: Keita Teranishi; For users of the development version of PETSc
Subject: RE: [petsc-dev] [GPU] Performance on Fermi

On Fri, 27 Aug 2010 16:18:43 -0500, Keita Teranishi <keita at cray.com> wrote:
> Yes, I replaced all the compiler flags by -O3.

petsc-maint doesn't come to me, but if the snippet that Barry quoted was
from your log_summary, then PETSC_USE_DEBUG was definitely defined when
plog.c was compiled.  It's really much easier to have two separate
builds and always use the optimized one when profiling.

Jed