[Wien] Benchmark-Compilation options

[Clazo Clazo]

Dear all,

I compiled the wien code  VERSION_05.6: 20.10.2005  in a SGI Altix 4700 system with Itanium2 Madison 9M Prozessoren (1.66GHz/6MB L3 Cache) , ifort version 9.0 + mkl8.0 + libgoto_ITANIUM2-r1.00.a,  and I carried out the standard test_case provided in the wien2k web site in order to see how well the tunning of the compiler and libraries was. I obtained a running time of 160 Sec. The running time for a similar setup reported in the wien2k Benchmarks site is:

Itanium2(1.6GHz,SGI Altix 3700)  122 sec    ifort9.0 +mkl8.0, libgoto_itanium2_64p-r1.00

Thus, faster than the time I got. The compiling options  (most of them are the default options recommended by the siteconfig script) are the following:

     O   Compiler options:        -O3 -tpp2 -ftz -ip -fno-alias -cm -w -FR -DALTIX -DINTEL_VML
     L   Linker Flags:            -L../SRC_lib -Vaxlib
     P   Preprocessor flags       '-DParallel'
     R   R_LIB (LAPACK+BLAS):     -L/fibus/fs1/16/vt4cl/LIB/GotoBLAS/libgoto_ITANIUM2-r1.00.a -lscs -L/opt/intel/mkl/8.0.2/lib/64/ -lvml

I downloaded and compiled the last version of GOTO library from the web.

Has somebody having a similar system been able to reproduce the running time posted in the wien2k Benchmark page (122 sec)? If so, could you post the options used to compile the code?

The running time I get (160 sec) is already good, but I think, if the code is able to run faster in the computational setup available, I should try to tune the compiler and libraries in order to get the best possible performance.

Thank you in advance, 


Cesar Lazo
Technische Universität Hamburg-Harburg






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