[petsc-dev] Seeking OLCF users complaining about poor build times

[Victor Eijkhout]

> In your case - with 16 cores available - PETSc configure scheduled
> 'make -j 13' job - and that ran for a bit more than a minute. And
> 'user'+'sys'/'real' times give a factor of 6.2 - so thats equivalent
> to keeping 6 cores 100% busy?

Ok, I wasn't aware that you were tuning the build process. I was just using the downloaded release, not the github master.

Github pull, only optimization options, using MKL:

real    5m10.249s
user    2m15.844s
sys     2m2.092s

real    1m28.763s
user    7m50.110s
sys     1m55.301s