[Wien] Wien 2k benchmarks on Apple MacPRO (MacOS X Server 10.4.10)

[Peter Blaha]

Very interesting numbers, telling that a good compiler/library is really 
important (and eventually worth some money).
 
Still it would be interesting to have some multi-threading 
(probably mainly 2-threads) results, i.e. 
to be able to judge the "best possible performance" like comparing
2 jobs with 2 threads vs. 4 jobs with 1 thread,... or can one gain 
something with 4 jobs and 2 threads,...

> My results were about 50% faster on a similar Mac Pro but running Fedora 7 and
> using ifort 10.0 and mkl 9.1. I used the default compiler options plus -O3
> -xT.
> 
> 1 job with 1 thread:    115.459 sec
> 2 jobs with 1 thread:  125.219 sec (62.610 sec/kpt)
> 4 jobs with 1 thread:  167.083 sec (41.771 sec/kpt)
> 6 jobs with 1 thread:  237.760 sec (39.627 sec/kpt)
> 8 jobs with 1 thread:  311.175 sec (38.897 sec/kpt)
> 
> On Oct 5, 2007, at 4:18 AM, Marcus Tegel wrote:
> 
> > Hi!
> > 
> > Benchmarks:
> > 
> > MacPRO, dual-Xeon 5300, 8 x 3.0 GHz  182 sec gcc 4.01, gfortran, libgoto (1
> > job with 1 thread)
> > MacPRO, dual-Xeon 5300, 8 x 3.0 GHz  254 sec (eq. 64 sec)    gcc 4.01,
> > gfortran, libgoto (4 jobs with 1 thread)
> > MacPRO, dual-Xeon 5300, 8 x 3.0 GHz  337 sec (eq. 56 sec)    gcc 4.01,
> > gfortran, libgoto (6 jobs with 1 thread)
> > MacPRO, dual-Xeon 5300, 8 x 3.0 GHz  448 sec (eq. 56 sec)    gcc 4.01,
> > gfortran, libgoto (8 jobs with 1 thread)
> > 
> > 
> > Site configuration:
> > 
> > Compiler options:    -ffree-form -O3 -ftree-vectorize -ffast-math
> > Linker Flags:$(FOPT) -L../SRC_lib -lpthread
> > Preprocessor flags   '-DParallel'
> > R_LIB (LAPACK+BLAS): -llapack_lapw -lgoto -llapack_lapw
> > 
> > 
> > Best wishes,
> > Marcus Tegel
> > 
> > <Marcus Tegel.vcf>
> > 
> > _______________________________________________
> > Wien mailing list
> > Wien at zeus.theochem.tuwien.ac.at
> > http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
> 
> 


                                      P.Blaha
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Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
Phone: +43-1-58801-15671             FAX: +43-1-58801-15698
Email: blaha at theochem.tuwien.ac.at    WWW: http://info.tuwien.ac.at/theochem/
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