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Hi all
I'm trying to benchmark my cluster using HPL
(linpack). I can run HPL fine and it gives good results running only on the
master node. However whentrying to run across the cluster, the process hangs. It
goes to a certain point :
- The relative machine precision (eps) is taken to
be 1.11022e-16
- Computational tests pass if scaled residuals are
less than 16
the process then just stops there and nothing else
happens.
I'm using MPICH as my default MPI
implementation.
The command given to execute xhpl on 2 nodes is
:
> mpirun -np 2 -machinefile /home/machines.LINUX
xhpl
My HPL.dat file looks like this :
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) 1000 Ns 1 # of NBs 64 NBs 1 # of process grids (P x Q) 1 Ps 2 Qs 16.0 threshold 3 # of panel fact 0 1 2 PFACTs (0=left, 1=Crout, 2=Right) 1 # of recursive stopping criterium 8 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 1 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) 80 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) Does anyone have a clue as to what i'm doing wrong?
Has anyone benchmarked their OSCAR clusters using HPL?
Your help would be greatly appreciated
Regards
Ralph
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