Compiler Optimization Override

[Tim Stitt]

Hi PETSc Users/Developers,

Could someone explain how I can override the default optimization level that 
comes with my PETSc build (currently -O). I want to set a more aggressive 
optimization level (e.g. -O3) for my compiler (PathScale).

Ideally I would prefer a solution which doesn't involve rebuilding PETSc each 
time I want to switch the optimization level. I tried to add the switch to 
the petscrules file but it always defaulted to the first (lower?) 
optimization switch that appeared in the application compile command line 
which seems to be built into PETSc.

Any help gratefully received. 

Regards,

Tim.

-- 
Dr. Timothy Stitt <timothy_dot_stitt_at_ichec.ie>
HPC Application Consultant - ICHEC (www.ichec.ie)

Dublin Institute for Advanced Studies
5 Merrion Square - Dublin 2 - Ireland

+353-1-6621333 (tel) / +353-1-6621477 (fax) / +353-874195427 (mobile)