[gmx-users] ibm regatta p690 (power4) / illegal instruction

Erik Lindahl lindahl at stanford.edu
Tue Nov 26 17:33:27 CET 2002

Erik Wensink wrote:

> Hi all,
> Trying to launch a pme job on an ibm regatta p690 (power4).
> That ends like below, same job with cut-off goes OK.
> Thus something with the fft libs may cause this.
> Tried to use --enable-threads when compiling fftw,
> since the load leveler of the machine requires thread safe compilaiton,
> but this gave no relieve. Anyone dealt with this problem?
> best regards,
> Erik

Hmm.... check the compiler flags used for FFTW; are they for some 
special power generation
(like pwr2)?

You don't need to enable threads; non-threaded code is threadsafe! (And 
the next generation
of Gromacs will handle threads above the FFTW level).



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