I've been poking around a little and it seems to me that the problem
is that the following functions can not be found in any of the LAM/MPI
library files.
extern void free_comm_schedule(int **sched, int npes);
extern void empty_comm_schedule(int **sched, int npes);
extern int **make_comm_schedule(int npes);
extern void fill_comm_schedule(int **sched, int npes);
extern int check_comm_schedule(int **sched, int npes);
extern void invert_comm_schedule(int **sched, int npes);
extern void sort_comm_schedule(int **sched, int npes, int sort_pe);
extern void print_comm_schedule(int **sched, int npes);
Where would these functions be found int the LAM/MPI package?
On 4/25/06, Jeff Squyres (jsquyres) <jsquyres_at_[hidden]> wrote:
> The MPI_Comm_f2c errors make me nervous; I don't know the FFTW code base
> at all, but that's a kind of error that you typically see when the
> programmer is incorrectly manipulating MPI handles.
>
> Poking through mpi/fftw_f77_mpi.c in the FFTW 2.1.5 code base, I see
> stuff like this:
>
> -----
> void F77_FUNC_(fftw_f77_mpi_create_plan,FFTW_F77_MPI_CREATE_PLAN)
> (fftw_mpi_plan *p, void *comm, int *n, int *idir, int *flags)
> {
> fftw_direction dir = *idir < 0 ? FFTW_FORWARD : FFTW_BACKWARD;
>
> *p = fftw_mpi_create_plan(FFTW_MPI_COMM_F2C(comm), *n,dir,*flags);
> }
> -----
>
> Notice that the type for "comm" is (void *). I'm guessing that it
> should be (int *), because this is an MPI handle that will be coming in
> from Fortran code (where MPI handles are defined to always be integers).
> Additionally, the FFTW_MPI_COMM_F2C macro is currently defined as:
>
> -----
> #if defined(HAVE_MPI_COMM_F2C)
> # define FFTW_MPI_COMM_F2C(comm) MPI_Comm_f2c(*((MPI_Comm *) comm))
> #elif defined(FFTW_USE_F77_MPI_COMM)
> # define FFTW_MPI_COMM_F2C(comm) (* ((MPI_Comm *) comm))
> -----
>
> Those (MPI_Comm*)'s should be (int *)'s because these are arguments that
> are coming in from Fortran (and therefore should be integers).
>
> Depending on the type of MPI_Comm, this macro could lead to erroneous
> behavior on 64 bit machines where using FFTW with Fortran codes.
>
>
>
> > -----Original Message-----
> > From: lam-bounces_at_[hidden]
> > [mailto:lam-bounces_at_[hidden]] On Behalf Of Brad Krane
> > Sent: Monday, April 24, 2006 10:51 PM
> > To: General LAM/MPI mailing list; FFTW List
> > Subject: Re: LAM: Compiling FFTW under LAM/MPI
> >
> > I tried your suggestion just now Ralf, by using make
> > LDFLAGS=--no-undefined and it solved all of the undefined reference
> > errors but the rest of them are still there and it added another error
> > "cc1: error" near the end there.
> >
> > I've included the output of this lattest attempt (LD_LIBRARY_PATH has
> > been set previous to this) below and it should look ok limited to 80
> > character per line and a fixed width font, instead of putting it in a
> > jpg image.
> >
> > $ make LDFLAGS=--no-undefined > make.txt
> > libtool: link: warning: undefined symbols not allowed in
> > i686-pc-cygwin shared libraries
> > libtool: link: warning: undefined
> > symbols not allowed in i686-pc-cygwin shared libraries
> > Info: resolving
> > _optarg by linking to __imp__optarg (auto-import) Info:
> > resolving _optind by linking to __imp__optind (auto-import)
> > Info: resolving _optarg by linking to __imp__optarg (auto-import)
> > Info: resolving _optind by linking to __imp__optind
> > (auto-import) fftw_f77_mpi.c: In function
> > `fftw_f77_mpi_create_plan__': fftw_f77_mpi.c:35:
> > warning: passing arg 1 of `MPI_Comm_f2c' makes integer from pointer
> > without a cast
> > fftw_f77_mpi.c: In function `fftwnd_f77_mpi_create_plan__':
> > fftw_f77_mpi.c:71: warning: passing arg 1 of `MPI_Comm_f2c'
> > makes integer from pointer without a cast
> > fftw_f77_mpi.c: In function
> > `fftw2d_f77_mpi_create_plan__': fftw_f77_mpi.c:81:
> > warning: passing arg 1 of `MPI_Comm_f2c' makes integer from pointer
> > without a cast
> > fftw_f77_mpi.c: In function `fftw3d_f77_mpi_create_plan__':
> > fftw_f77_mpi.c:90: warning: passing arg 1 of `MPI_Comm_f2c'
> > makes integer from pointer without a cast
> > libtool: link: warning: undefined symbols
> > not allowed in i686-pc-cygwin shared libraries
> > rfftw_f77_mpi.c: In
> > function `rfftwnd_f77_mpi_create_plan__':
> > rfftw_f77_mpi.c:39: warning: passing arg 1 of `MPI_Comm_f2c' makes
> > integer from pointer without a cast
> > rfftw_f77_mpi.c: In function
> > `rfftw2d_f77_mpi_create_plan__': rfftw_f77_mpi.c:49:
> > warning: passing arg 1 of `MPI_Comm_f2c' makes integer from pointer
> > without a cast
> > rfftw_f77_mpi.c: In function `rfftw3d_f77_mpi_create_plan__':
> > rfftw_f77_mpi.c:58: warning: passing arg 1 of `MPI_Comm_f2c'
> > makes integer from pointer without a cast
> > $ ~~
> > ibraries
> > cc1: error: unrecognized
> > command line option "-fno-undefined" mpicc: No such
> > file or directory
> > make[1]: *** [test_sched] Error 1
> > make: *** [all-recursive] Error 1
> >
> > On 4/24/06, Ralf Wildenhues <Ralf.Wildenhues_at_[hidden]> wrote:
> > > Hi Brad,
> > >
> > > * Brad Krane wrote on Mon, Apr 24, 2006 at 10:26:54PM CEST:
> > > > Hello I was wondering if someone would be able to give me some
> > > > direction that would help me to compile the FFTW 2.1.5
> > library in my
> > > > Cygwin environment. After some trouble and some work I managed to
> > > > compile LAM succesfully but when I try and compile the
> > FFTW library
> > > > (following all of the installation instructins to the T
> > of course) I
> > > > keep getting neumerious libtool warnings and then finally
> > a collect2
> > > > exit error and a mpicc not found. Could it be that a LAM
> > directory is
> > > > not in my path?
> > >
> > > I reported a related issue to the FFTW developers a few weeks ago.
> > > You could try (untested)
> > > make LDFLAGS=-no-undefined
> > >
> > > for now (after removing all FFTW libs you may have built
> > already), but I
> > > don't know whether it will work; I can look further into
> > this issue, but
> > > it may be a few days until I get to it.
> > >
> > > Cheers,
> > > Ralf
> > > _______________________________________________
> > > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> > >
> >
> >
> > --
> > Brad
> >
> > _______________________________________________
> > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> >
>
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>
--
Brad
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