[gmx-users] error installing fftw-2.15 with mpi in ia64 system

[David]

On Thu, 2005-04-21 at 16:40 +0200, Jesus Salgado wrote:
> Hi all,
> 
> We are trying Gromacs-3.2.1 in an Itanium II SGI Altix 3700 cluster.
> Compilation without mpi goes smooth. Performance is also OK, for both single 
> and double precision, with following benchmarks (for villin): 
> 5857.2ps/NODE.day (single); 5000.136ps/NODE.day (double).
> 
> But I am having trobles to compile fftw-2.1.5 with --enable-mpi. I get 
> following error after Make:

you probably need to add additional math libraries 
setenv LDFLAGS "-lXXX"
where XXX is the Intel optimized math library or something like that

Try first with
setenv LDFLAGS -lm

> 
>  ../fftw/.libs/libsfftw.a(twiddle.o)(.text+0x852): In function 
> `fftw_compute_rader_twiddle':
> : undefined reference to `__libm_sincos'
> ../fftw/.libs/libsfftw.a(twiddle.o)(.text+0x11f2): In function 
> `fftw_compute_twiddle':
> : undefined reference to `__libm_sincos'
> ../fftw/.libs/libsfftw.a(twiddle.o)(.text+0x1762): In function 
> `fftw_compute_twiddle':
> : undefined reference to `__libm_sincos'
> collect2: ld returned 1 exit status
> make[1]: *** [test_sched] Error 1
> make[1]: Leaving directory `/usus/sa/salgado/fftw-2.1.5/mpi'
> make: *** [all-recursive] Error 1
> 
> I'm using the Intel compilers (version 8.1).
> 
> Any idea?
> 
> Thanks,
> Jesus
-- 
David.
________________________________________________________________________
David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,          75124 Uppsala, Sweden
phone:  46 18 471 4205          fax: 46 18 511 755
spoel at xray.bmc.uu.se    spoel at gromacs.org   http://xray.bmc.uu.se/~spoel
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