1 Reply Latest reply on Apr 17, 2014 4:45 PM by kknox

    Bad performance FX on ACML-multithread (Linux)

    huber

      Hi! I use GetDP with MUMPS (4.10) and ACML (5.3.1) instead BLAS (ATLAS, OpenBLAS). I use "gfortran64_fma4_mp" version of ACML. When I set environment variable OMP_NUM_THREADS=4 (or more) on system with FX-6300 or OMP_NUM_THREADS=3 (or 4) for A8-5600K the computing performance dramatically fall down. What's wrong? Or it's normally?

      See image:

      4381860.png