Dear list,
The bad behaviour now only occurs with version 1.2.X of openmpi (I have
tried 1.2.5, 1.2.8 and 1.2.9 with gcc and 1.2.7 and 1.2.9 with pgi cc.
Problem is in all of those.). With 1.3.1 I can find no problem at all. So
perhaps that means that the problem is solved?
mpirun -np 4 .
Dear list,
A colleague pointed out an error in my test code. The final loop should
not be
for (i=0; idetails, details... Anyway, I still get problems from time to time with
this test code, but I have not yet had time to figure out the
circumstances when this happens. I will report back to
Dear list,
We've found a problem with openmpi when running over IB when calculation
reading elements of an array is overlapping communication to other
elements (that are not used in the calculation) of the same array. I have
written a small test program (below) that shows this behaviour. Wh
