0 Replies Latest reply on May 17, 2011 1:25 PM by cn_an

    umfpack acml 4-4-0 performance problems

      umfpack acml performance problems


      currently i am evaluating the sparse linear solver

      umfpack from T.Davis's Suite Sparse. Opposed to my

      expectation i get a big performance drop, when i

      statically linked against libacml_mp.a (gfortran 4.4. 64Bit), 

      instead of using LAPACK 'standard' BLAS implementation.

      The used sparse matrices vary in size and are taken from

      the UF Sparse Matrix Collection (http://www.cise.ufl.edu/research/sparse/matrices/Bomhof/index.html). Someone a idea, what i might do wrong?

      Used System:

      Hardware: AMD Phenom(tm) X6 1045T

      OS: Fedora Core 13 64 Bit

      Development System:

      Fedora Core 14 64 Bit running in VM VirtualBox with

      gcc 4.5.1 20100924