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Special Forums UNIX and Linux Applications High Performance Computing Benchmarking a Beowulf Cluster Post 302313899 by mercthunder on Thursday 7th of May 2009 12:12:08 AM
Old 05-07-2009
Thanks for the response otheus.

Everything seems to be working except the tuning of the HPL.dat. I keep getting processor errors such as:

HPL ERROR from process # 0, on line 419 of function HPL_pdinfo:
>>> Need at least 8 processes for these tests <<<

HPL ERROR from process # 0, on line 621 of function HPL_pdinfo:
>>> Illegal input in file HPL.dat. Exiting ... <

That is trying to run it on 8 cores across 2 nodes. I have also tried your HPL.dat you provided, and i get a similar error except it says Need at least 12 processes.

Do you know what causes these errors. I have a hosts file in the same directory with the names of the two nodes which i wish to run the tests on.

At the command line i am typing:

mpirun -np 8 -machinefile hosts xhpl_em64t

where hosts file has the names:
machine1
machine2

With each machine being a 3ghz QX6850 Core 2 Extreme (Quad Core), 4GB RAM.

The dat file being uses for two nodes is:

Code:
HPLinpack benchmark input file
Innovative Computing Laboratory, University of Tennessee
HPL.out      output file name (if any) 
8            device out (6=stdout,7=stderr,file)
1            # of problems sizes (N)
29184         Ns
1            # of NBs
128           NBs
0            PMAP process mapping (0=Row-,1=Column-major)
1            # of process grids (P x Q)
2            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.
1            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)
64           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)
##### This line (no. 32) is ignored (it serves as a separator). ######
0                               Number of additional problem sizes for PTRANS
1200 10000 30000                values of N
0                               number of additional blocking sizes for PTRANS
40 9 8 13 13 20 16 32 64        values of NB



Hoping someone could please help.


Thanks.

Last edited by Neo; 05-11-2009 at 05:16 PM.. Reason: code tags
 

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ARP2ETHERS(8)						      System Manager's Manual						     ARP2ETHERS(8)

NAME
arp2ethers - convert arpwatch address database to ethers file format SYNOPSIS
arp2ethers [ arp.dat file ] DESCRIPTION
arp2ethers converts the file /var/lib/arpwatch/arp.dat (or the file specified on the command line) into ethers(5) format on stdout. Usu- ally arp.dat is an ethernet/ip database file generated by arpwatch(8). The arpwatch daemon in Debian will create different arp.dat depend- ing on its configuration. All of them will be available at /var/lib/arpwatch/. FILES
/var/lib/arpwatch - default directory for arp.dat arp.dat - ethernet/ip address database SEE ALSO
arpwatch(8), ethers(5), rarp(8), arp(8), BUGS
Please send bug reports to arpwatch@ee.lbl.gov. AUTHORS
Original version by Craig Leres of the Lawrence Berkeley National Laboratory Network Research Group, University of California, Berkeley, CA. Modified for the Debian Project by Peter Kelemen, with additions from Erik Warmelink. The current version is available via anonymous ftp: ftp://ftp.ee.lbl.gov/arpwatch.tar.gz This manual page was contributed by Hugo Graumann. ARP2ETHERS(8)
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