Blaise A Bourdin <[email protected]> writes: > Hi, > > I am pricing out a new small cluster for my group and have been out of the HW > loop for a while. > Does anybody on the list have experience running petsc on recent generation > AMD EPYC? > I assume that the intel will not generate optimized code for non-intel COU. > How about gcc / clang? > My metric is not pure performance but rather performance over price.
I have a 2-socket 7452, which is a great price point for our sort of work. If you're purely memory bandwidth-limited, you can get fewer cores, but that doesn't save a lot of money. You'd probably want to compare pricing with the new Zen 3 chips too. I'll forward you a log file from a multigrid solver with some analysis. Suffice it to say, it matches to significantly outperforms (depending on the operation) a 2-socket Xeon 8280. > I do mostly implicit finite element codes and 90% of my walltime is KSP / > SNES solves > > Regards, > Blaise > > -- > A.K. & Shirley Barton Professor of Mathematics > Adjunct Professor of Mechanical Engineering > Adjunct of the Center for Computation & Technology > Louisiana State University, Lockett Hall Room 344, Baton Rouge, LA 70803, USA > Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 Web > http://www.math.lsu.edu/~bourdin
