Albert,
It looks like you are trying to compile for an IBM Power 7 system. What
is the 'other machine' you are comparing it to, and did you use the same
number of cores in each case?
Prentice
On 08/29/2013 03:54 PM, Albert wrote:
Hello:
I compiled 4.6.3 in HPC with following steps:
setenv OBJECT_MODE 64
/opt/cmake/2.8.9_new/bin/cmake ..
-DCMAKE_INSTALL_PREFIX=/opt/gromacs/4.6.3 -DBUILD_SHARED_LIBS=OFF
-DCMAKE_BUILD_TYPE=Release -DGMX_SOFTWARE_INVSQRT=OFF -DGMX_GPU=OFF
-DGMX_MPI=ON -DGMX_THREAD_MPI
=OFF -DGMX_X11=OFF -DGMX_FLOAT_FORMAT_IEEE754=1
-DGMX_IEEE754_BIG_ENDIAN_BYTE_ORDER=1
-DGMX_IEEE754_BIG_ENDIAN_WORD_ORDER=1
-DCMAKE_C_COMPILER="/usr/bin/mpcc_r" -DCMAKE_CXX_COMPILER="/usr/bin/mpCC_
r" -DCMAKE_C_FLAGS_RELEASE="-O3 -qstrict -qsimd=auto -qmaxmem=-1
-qarch=pwr7 -qtune=pwr7" -DCMAKE_XX_FLAGS_RELEASE="-O3 -qstrict
-qsimd=auto -qmaxmem=-1 -qarch=pwr7 -qtune=pwr7" -DFFTWF_LIBRARY="/o
pt/fftw/3.3.2/lib/libfftw3f.a"
-DFFTWF_INCLUDE_DIR="/opt/fftw/3.3.2/include"
-DCMAKE_LINKER="/usr/bin/mpcc_r"
gmake -j 16
gmake install
when I do the test, I found that the performance is really bad. It
tooks more than one year for a job to be done while it only take 2
months in other machine. Does anybody have any idea where is the problem?
thanks a lot
Albert
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