HI Helmut,

I am building with Release mode and nothing else in particular. I happen to have MPI turned on but I do not think that will make a difference.

One thing that might be worth checking is the use of openblas. I have had trouble with openblas in the past for small matrix sizes. The compilation I used will have been using the default installation in /usr/lib/libblas.a. I guess Douglas’ test will have used the Framework of Mac OS X.  However looking at the set up on the compute module I do seem to have openblas loaded 

(@Chris: Could you confirm what version of openblas is running on Victoria 

Other configurations are:
library
gcc             4.9.2
boost         1.58 - installed from a module

Do you have another machine/laptop we could turn this test on? 

Cheers,
Spencer.

PS I had a time step of 1e-6 and attach my .xml file below