Power7 "passat"

(IBM Power 755, 32 POWER7 processors, 3300 MHz, 256 GB main memory)

DKRZ offers two IBM Power7 nodes named passat in addidtion to blizard. These nodes can be used instead of blizzard for interactive work and for serial jobs. All software available on blizzard is also installed on passat.

Login to passat with:

ssh <userid>@passat.dkrz.de

Passat is connected to the GPFS filesystems (/pf, /work, /scratch) of blizzard. HOME-directories are shared between both systems. The HPSS tape archive is accessible via pftp. LoadLeverler is available, so you can submit jobs (llsubmit <jobscript>) to all queues.

Executables compiled either on blizzard or on passat with xlf13.1.x / xlc11.x should run on passat and in the queue serialp7. Load the appropriate modules with

module load IBM/xlf13.1.0.7 IBM/xlc11.1.0.7 IBM/xlC11.1.0.7

before compiling your code on passat.

Use the new serial queue "serialp7" from blizzard or passat by inserting the following line into your job script:

#@ class = serialp7

For job limits see here.

To run code in any other queue on blizzard that was compiled on passat, be sure to have used "-qarch=pwr6 -qtune=pwr6".