Hi Gunnar, On Jan 24, 2017, at 6:54 PM, Gunnar Sauer <[email protected]> wrote: > I was told to use the optimized system whereever possible.
Well, that advice applies on the Cray, which comes with its math kernel libs pre-optimised for the particular arch. However, it is not true on generic Xeon clusters, since fi. RedHat would rather distribute FFT/LAPACK RPMs which work for everybody, rather than “the fastest and greatest build”. In short, take advantage of EasyBuild to create a namespace compatibility layer among the resources but do not hold your breath for total reproducibility across the platforms - it’s just the best you can do. If you arrive at a point where things build symmetrically across the platforms, I would call that success. The spirit of this document reflects that kind of situation, when fusing different architectures together: http://hpcbios.readthedocs.io/en/latest/HPCBIOS_06-01.html enjoy, Fotis -- echo "sysadmin know better bash than english" | sed s/min/mins/ \ | sed 's/better bash/bash better/' # signal detected in a CERN forum
