[Pw_forum] multi core Vs Single core

[Axel Kohlmeyer]

On Sat, 9 Feb 2008, Paul M. Grant wrote:



PG> haven't installed Kubuntu yet, but running some of my benchmarks under
PG> Cygwin/X (Win OS is Vista 32 bit), it seems "cpu intensive" tasks, like
PG> gfortran compile and pwscf nscf run only in one core...(~50% cpu as shown by


paul,

if you want to speed up compilations of QE (for all except iotk), 
you can try (provided you have a GNU make installed):

make MFLAGS=-j2

dunno if windows is up to it, but it rocks under linux. ;-)

axel.



-- 
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Axel Kohlmeyer   akohlmey at cmm.chem.upenn.edu   http://www.cmm.upenn.edu
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