[Wien] Quad Core Benchmark

[Laurence Marks]

Correction: the "x" commands reports total CPU time, whereas what is
relevant is the WALL time
1 Job  1 Thread            140 Secs
2 Jobs 1 Thread Each   150 Secs Each (75 Secs/Job)
1 Job   2 Threads           88 Secs
2 Jobs 2 Threads Each  112 Secs (61 Secs/Job)

On Jan 6, 2008 8:17 AM, Laurence Marks <L-marks at northwestern.edu> wrote:
> Xeon 3210 2.13GHz Quad Core (2x2Duo Core)
> ifort 10.1.008 cmkl 10.0.1.014
> FOPT =  -FR -mp1 -w -prec_div -pc80 -pad -ip -DINTEL_VML -xT
> -mtune=core2 -O3 -thread -fminshared
> LDFLAGS = $(FOPT) -L/opt/intel/mkl/10.0.1.014/lib/em64t -static
> R_LIBS = -lmkl_lapack -lguide -pthread
> 1 Job 1 Thread          140 Secs (OMP_NUM_THREADS=1)
> 1 Job 2 Threads         168 Secs (OMP_NUM_THREADS=2)
> 2 Jobs 1 Thread each    150 Secs each,
>
> Comments:
> 1) It looks like the threading is not right as yet, and/or something
> else; I cannot find a way to get improved performance with threads. If
> anyone has suggestions please respond directly to me.
> 2) The numbers suggest that this quad core is really behaving like
> 2x2Duo Cores, i.e. a 2 CPU Xeon which is perhaps not surprising.
>
> --
> Laurence Marks
> Department of Materials Science and Engineering
> MSE Rm 2036 Cook Hall
> 2220 N Campus Drive
> Northwestern University
> Evanston, IL 60208, USA
> Tel: (847) 491-3996 Fax: (847) 491-7820
> email: L-marks at northwestern dot edu
> Web: www.numis.northwestern.edu
> Commission on Electron Diffraction of IUCR
> www.numis.northwestern.edu/IUCR_CED
>



-- 
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60208, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
Web: www.numis.northwestern.edu
Commission on Electron Diffraction of IUCR
www.numis.northwestern.edu/IUCR_CED