[GRASS-user] GRASS 32bit/64bit do not use all available CPUs

[Ulrich Leopold]

Hi,

I have been trying out a precompiled GRASS 6.2.1 64bit version on a
virtualised ubuntu edgy system (vmware) with 4 CPUs (no hyperthreading).

When I run GRASS the sprocess only uses 1 CPU instead of 4. I also checked
with the original precompiled GRASS version for edgy (6.0). It does the same.

I also checked with a 32bit single CPU machine and hyperthreading modus. Both
GRASS versions do the same here as well. They just use 1 CPU instead of 2.

When I use the programm stress --cpu 4 for the 64bit system and stress --cpu 2
for the 32bit system both systems show 100% usage of all available CPUs.

What is the error? Does GRASS have an option to specify use of multiple CPUs
at compilation? Or is there something else?

Best regards, Ulrich