> > > each of those is staggeringly expensive. For example, "omp parallel" on > Xeon Phi costs about 20k cycles, Any idea what this might be for an AMD Opteron (Titan)? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20150109/95e20148/attachment.html>