[MITgcm-devel] linux_ia64_ifort+mpi_altix_gfdl

[Dimitris Menemenlis]

Baylor, thank you for info.  Do you, or anyone else on devel list, have 
experience with removing the "-mp" flag, i.e., does all hell break loose?

I am thinking of experimenting with following options file on the NAS Altix:
http://mitgcm.org/cgi-bin/viewcvs.cgi/MITgcm_contrib/high_res_cube/code-mods/linux_ia64_ifort+mpi_altix_nas

> I did a little testing on a medium sized simulation (64 processors) with -ip
> and -ipo.  I saw modest improvements in speed (couple of percent) with -ip
> and no further increase with -ipo.  Of course, -ipo takes more than twice as
> long to compile.  But, I think there is no other loss in using -ipo if you
> like...