On Thu, 2010-01-21 at 15:40 -0600, Champagne, Nathan J. (JSC-EV)[Jacobs Technology] wrote: > >What is a correct result then? > > The correct results are output by v1.3.1. The filename in the archive is > "sol_1.3.1_96.txt". > > >How often do you get junk or NaNs compared to correct result. > We haven't been able to quantify it. It almost seems random; similar to using > a variable that's unintialized, expecting its initial value to be zero when > it may not be.
In that case i wonder what version of scalapack/blacs you are using? I have run a bunch of tests with openmpi 1.3.3 and 1.4 all yield the correct result. Using Intel 10.1 with lapack 3.1.1 built my me + gotoblas, and also tried mkl. Also tried with Pathscale 3.2 with lapack 3.1.1/gotoblas still ok I tried running with 128 cores too but still the same result (except one small round-off difference) I know that scalapack versions prior to 1.8.0 had a couple of bugs with uninitalized vars.
