Thomas Gross <[email protected]> writes: > I was using a Newton Loop in Feap with a higher accuracy. This caused > FEAP8.4 to call KSPSolve with GAMG 3 times but FEAP8.3 to call > KSPSolve with Prometheus only 1 time. I have now used a larger mesh > and adapted the FEAP solve file to call KSPSolve only once for GAMG > and Prometheus. However, Prometheus is about 3 times faster then GAMG > (see attached log files).
At the very least, you're using different compilers and a different MPI implementation (perhaps one is infiniband?). Communication time is very different in these cases. Should fix that before thinking harder about this.
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