[Nek5000-users] libxsmm within Nek5000

[nek5000-users at lists.mcs.anl.gov]

Hi,


Do you have any performance results of the libxsmm comparing with stand-alone "mxm" ?


In the master branch of Nek5000, the libxsmm function "libxsmm_dgemm" is only called in file "

mxm_wrapper.f"

...

#ifdef XSMM

         call libxsmm_dgemm('N','N',n1,n3,n2,1.0,a,n1,b,n2,0.0,c,n1)
#endif

...


I could not find any optimization works such as dispatch and streaming updates in the kernels that were used in e.g. NekBox.


What is the status about the implementation of libxsmm or other SIMD techniques within Nek5000 right now?


Thanks. /Jing
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