Charm++ parallel programming system

[Jim Phillips <jim AT ks.uiuc.edu>]

Yes, we use only the xlC compilers for NAMD.  Fortran is not needed.

Our most recent AIX experience is encoded in arch/AIX-POWER-xlC.arch in 
the NAMD source tree:

NAMD_ARCH = AIX-POWER
CHARMARCH = mpi-sp-mpcc64

# need to define MEMUSAGE_USE_SBRK because mallinfo appears to cause 
crashes
CXX = xlC_r -q64 -qtls=local-exec -w -qstaticinline -DMEMUSAGE_USE_SBRK
CXXOPTS = -O -qnohot -qstrict -qaggrcopy=nooverlap -qalias=ansi 
-qarch=auto -qtune=auto -qfloat=rsqrt:fltint -DARCH_POWERPC
CXXNOALIASOPTS = -O3 -qaggrcopy=nooverlap -qalias=noallptrs -qarch=auto 
-qtune=auto -qfloat=rsqrt:fltint -DARCH_POWERPC
CXXTHREADOPTS = -O -qstrict -qaggrcopy=nooverlap -qalias=ansi -qarch=auto 
-qtune=auto -qfloat=rsqrt:fltint -DARCH_POWERPC
CC = xlc_r -q64 -qcpluscmt -w
COPTS = -O4 -qinlglue -qarch=auto -qtune=auto

arch/Linux-POWER-xlC.arch might have slightly different options.

-Jim

On Wed, 11 Dec 2013, Phil Miller wrote:

> You could drop the 'gcc' and 'gfortran' options, and use the default xlC
> compiler toolchain. I believe that is expected to provide better
> performance on POWER hardware, though the NAMD developers would have to
> confirm that.
>
> So that we can fully understand your situation, could you please describe
> what resources led you to choose the lapi-gcc-gfortran build target?
>
>
> On Wed, Dec 11, 2013 at 10:43 AM, Mengyuan Zhu 
> <mzhu6 AT student.gsu.edu>wrote:
>
> >  Dear,
> >
> > As I want to compile NAMD2.9 in AIX UNIX, I have to compile charm first.
> >
> > This is my command:
> > ./build charm++ lapi gcc   gfortran     --with-production
> >
> > This is my error:
> >
> > g++: error: unrecognized command line option '-qstrict'
> > Fatal Error by charmc in directory
> > /rc/home/wang/mzhu6/bin/NAMD_2.9_Source/charm-6.4.0/lapi-gfortran-gcc/tmp
> >    Command g++ -fPIC -Wno-deprecated -DCMK_GFORTRAN -I../bin/../include
> > -D__CHARMC__=1 -I. -O3 -qstrict -Q -c trace-common.C -o trace-common.o
> > returned error code 1
> > charmc exiting...
> >
> >
> >  What can I do?
> >
> >
> >  Best regards,
> >
> > Mengyuan Zhu
> >
> >
> > _______________________________________________
> > charm mailing list
> > charm AT cs.uiuc.edu
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