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2x AMD EPYC 7351 system only gets 61 GFlop/s with hpl

Question asked by tty42 on Jul 25, 2019

Hi.

I am currently benchmarking a few AMD systems in our infrastructure.

I compiled the hpl 2.3 linpack benchmark using amd-blis-1.3 and I only get about 61 GFlops/s.

I already had a look at the HPC tuning guide for EPYC Processors and changed the HPL.dat accordingly but in this case the benchmark runs forever (ok, well, didn't returned a result after at least 3 hours)

 

Is there something I'm missing?

Thanks!

HPLinpack benchmark input file
Innovative Computing Laboratory, University of Tennessee
HPL.out      output file name (if any)
6            device out (6=stdout,7=stderr,file)
1           # of problems sizes (N)
240000  Ns
1            # of NBs
191      NBs
0            PMAP process mapping (0=Row-,1=Column-major)
1            # of process grids (P x Q)
8        Ps
 4         Qs
16.0         threshold
1            # of panel fact
2        PFACTs (0=left, 1=Crout, 2=Right)
1            # of recursive stopping criterium
4          NBMINs (>= 1)
1            # of panels in recursion
2            NDIVs
1            # of recursive panel fact.
2        RFACTs (0=left, 1=Crout, 2=Right)
1            # of broadcast
0            BCASTs (0=1rg,1=1rM,2=2rg,3=2rM,4=Lng,5=LnM)
1            # of lookahead depth
1            DEPTHs (>=0)
2            SWAP (0=bin-exch,1=long,2=mix)
8           swapping threshold
0            L1 in (0=transposed,1=no-transposed) form
0            U  in (0=transposed,1=no-transposed) form
1            Equilibration (0=no,1=yes)
8            memory alignment in double (> 0)

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