[Pw_forum] Compiling problems on AMD opteron64 under Linux using MPI

[Nicola Marzari]

Not sure if this is relevant, but does mpif.h include real8 ? mpif.h can
be found in /usr/local/include or /usr/include, and we found
(for dual Xeon, lam-mpi) that we needed to add real8 in there, as in:

       integer MPI_INTEGER, MPI_REAL, MPI_DOUBLE_PRECISION
       integer MPI_REAL8
       integer MPI_COMPLEX, MPI_LOGICAL, MPI_CHARACTER

and 

       parameter (MPI_REAL=12)
       parameter (MPI_REAL8=13)
       parameter (MPI_DOUBLE_PRECISION=13)
       parameter (MPI_COMPLEX=14)


			nicola

On Tue, 2004-10-12 at 01:08, Adrain Zhou wrote:
> Dear all,
>  
> I tried to load pwscf on AMD opteron 64 machine under linux. I have
> obtained a serial executable successfully. But I met the following
> problems when using MPI.
>  
> pgf90-Warning-Unknown switch: -pthread
> PGF90-S-0038-Symbol, mpi_real8, has not been explicitly declared
> (broadcast.F90)
>   0 inform,   0 warnings,   1 severes, 0 fatal for broadcast
> make[1]: *** [broadcast.o] Error 2
> 
> Here is the make.sys I used,
> CPPFLAGS = -D__LINUX64 -D__PGI -D__PARA -D_MPI -D_LAM -D__FFTW
> -D__USE_INTERNAL_FFTW \
>   -I$(OSHOME)/include -I./
> #
> # Fortran compiler:
> F90 = mpif90
> F77 = mpif77
> CC =  mpicc
> #
> # Please note: -r8 is necessary for numerical stability ..
> #
> F90FLAGS =  -fast -r8
> F77FLAGS =  -fast -r8
> CCFLAGS  =  $(CPPFLAGS)
> 
> Many thanks in advance.
>  
> Regards,
> Adrain
> 
> 
> 
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Prof Nicola Marzari   Department of Materials Science and Engineering
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