xdlutime results

Horatio B. Bogbindero wyy at cersa.admu.edu.ph
Wed Sep 13 02:28:42 EDT 2000


so i presume that the results here are quite respectable already. btw, i
was able to get the linpacks, linpackd, 1000s and 1000d benchmark tests
but i do not know how to use them. i tried compiling and linking them to
the scalapack libraries but it complains like this:

-----------
mpif77 -O3  -o linpacks /home/apps/libs/SCALAPACK/scalapack_LINUX.a
/home/apps/libs/SCALAPACK/pblas_LINUX.a
/home/apps/libs/SCALAPACK/tools_LINUX.a
/home/apps/libs/opt/blacsF77init_MPI-LINUX-0.a
/home/apps/libs/opt/blacs_MPI-LINUX-0.a
/home/apps/libs/opt/blacsF77init_MPI-LINUX-0.a
/home/apps/libs/opt/libatlas.a 
/usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66/libg2c.a(main.o): In
function `main':
/usr/src/bs/BUILD/egcs-1.1.2/obj-i386-linux/i386-redhat-linux/libf2c/libF77/../../../../libf2c/libF77/main.c:61:
undefined reference to `MAIN__'
collect2: ld returned 1 exit status
make: *** [linpacks] Error 1

does anyone have any idea how to use this program. it seems to missing
some pieces of code. thanks.

On Wed, 13 Sep 2000, Putchong Uthayopas wrote:

> Hi,
> MFlops means Millions Floatpoint Operation Per Seconds. It is the measures
> of how fast you systems can do floating point operations. It is a general
> performance indication
> for scientific computer.
> 
> Below are our results. The machines is 8 Athlon 550MHz and one 1Ghz Athlon.
> 512 Mb memory each. and Myrinet.
> More detail of the system can be found at
> http://smile.cpe.ku.ac.th/cluster/athlon.html
> 
> Putchong
> Kasetsart University, Thailand.
> ========================================================
> 
> webadmin at amata84 TESTING]$ mpirun -np 9 xdlutime LUTIME.dat
> Simple Timer for ScaLAPACK routine PDGESV
> 
> Number of processors used: 9
> 
> TIME N NB P Q LU Time Sol Time MFLOP/S Residual CHECK
> 
> ---- ----- --- --- --- --------- --------- -------- -------- -------
> 
> WALL 6000 9 1 9 116.80 0.41 1229.04 0.001097 PASSED
> 
> WALL 6000 9 9 1 200.79 3.65 704.66 0.001926 PASSED
> 
> Comments for the output:
> 
> Column 1: the time is the wall clock time
> 
> Column 2 & 3: matrix size (N by N) and block size (NB by NB)
> 
> Column 4 & 5: grid size (P by Q)
> 
> Column 6: total time (in seconds) to run PDGESV
> 
> Column 7: mega flops per seconds
> 
> Column 8: if PDGESV works fine
> 
> ----- Original Message -----
> From: "Horatio B. Bogbindero" <wyy at cersa.admu.edu.ph>
> To: <beowulf at beowulf.org>
> Sent: Wednesday, September 13, 2000 12:35 PM
> Subject: xdlutime results
> 
> 
> >
> > i need help in interpreting my xdlutime results in a 8-node beowulf
> > cluster connected via 100mbps fast ethernet (intel 410T and
> > inteleepro100s).
> >
> > here are the results:
> > --------------------
> >
> > Simple Timer for ScaLAPACK routine PDGESV
> > Number of processors used:   8
> >
> > TIME     N  NB   P   Q  LU Time   Sol Time  MFLOP/S Residual  CHECK
> > ---- ----- --- --- --- --------- --------- -------- -------- -------
> > WALL  2828  64   2   2     42.70      0.35   350.49 0.005429 PASSED
> > WALL  2828  64   2   2     42.69      0.35   350.60 0.005429 PASSED
> >
> > --------------------
> >
> > what does the MFLOP/S here mean? thanks.
> >
> > ---------------------
> > william.s.yu at ieee.org
> >
> > Good news from afar can bring you a welcome visitor.
> >
> >
> >
> > _______________________________________________
> > Beowulf mailing list
> > Beowulf at beowulf.org
> > http://www.beowulf.org/mailman/listinfo/beowulf
> 

 
---------------------
william.s.yu at ieee.org
 
Good news from afar can bring you a welcome visitor.
 


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