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bebendorf
Beginner
62 Views

Intel MKL slow

Hi,

when I compare the performance of MKL-LAPACK with an ifc compiled version of the netlib LAPACK, MKL 6.1.1 is almost two times slower.

I use "MKL_SERIAL=yes" on a dual Xeon system running Redhat 9.
MKL is linked with
"-L/opt/intel/mkl61/lib/32 -lmkl_lapack -lmkl_ia32 -lguide -lpthread".

Is there a mistake in how I use MKL ?
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Intel_C_Intel
Employee
62 Views

There have been some functions within LAPACK which have run slowly because of some issues with dlamch, the routine which determines certain double precision parameters for the machine.

What routine(s) are you calling?

Bruce