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[netCDF #OKF-351804]: configure netcdf-fortran-4.4.5 with parallel

Hello,

You are correct in that you should set FC to mpif90 and CC to mpicc when 
compiling netcdf-fortran.  You don't need to set any additional options when 
configuring netcdf-fortran; when the parallel functionality is available it 
will be enabled automatically.  If you want to test the parallel functionality 
during 'make test', however, you will need to pass --enable-parallel-tests (as 
you note).  

The documents you are looking at refer specifically to netCDF-C, and can be 
made more clear.  Thank you very much for pointing this out!  I will get the 
updated.

I hope this helps, have a great day,

-Ward

> Full Name: Yifan Wang
> Email Address: address@hidden
> Organization: Stevens Institute of Technology
> Package Version:
> Operating System: Linux
> Hardware:
> Description of problem: Dear NetCDF group,
> 
> I am confused about the configuration of netcdf, netcdf-c and netcdf-fortran. 
> I would like to parallel run a model (ROMS), which requires NETCDF file 
> reading and writing. I was told to install netcdf with parallel I/O. So what 
> I have done is
> 1) build and install HDF5 with parallel support
> CC=mpicc ./configure --enable-parallel --prefix=${H5DIR}
> 2) build and install pnetcdf-1.11.0
> ./configure --prefix=/opt/pnetcdf --enable-shared 
> --with-mpi=/opt/openmpi401/bin
> 3) build and install NETCDF-C-4.6.3
> CC=mpicc CPPFLAGS="-I/opt/phdf5/include -I/opt/pnetcdf/include" 
> LDFLAGS="-L/opt/phdf5/lib -L/ope/pnetcdf/lib" ./configure --enable-pnetcdf 
> --enable-parallel-tests --prefix=/opt/netcdf4 
> --enable-remote-fortran-bootstrap
> 4) build and install NETCDF-Fortran
> CC=/usr/local/cc
> FC=/usr/local/gfortran
> NFDIR=/usr/local
> CPPFLAGS=-I${NCDIR}/include LDFLAGS=-L${NCDIR}/lib \
> ./configure --prefix=${NFDIR}
> 
> The questions that I have are:
> 1) should I set up CC to be mpicc and FC to be mpif90, for all the configure 
> I did above? Because I would like to know whether different compiler would 
> influence the following build...
> 2) when I configure netcdf-fortran, should I add any other options, like 
> '--enable-parallel-test', or just like what I did for netcdf-c, to make sure 
> the netcdf-fortran is parallel available?
> 3) the tutorial in 
> "https://www.unidata.ucar.edu/software/netcdf/docs/getting_and_building_netcdf.html";
>  shows how to build netcdf4 with parallel support. However, is the netcdf4 
> means netcdf-c or netcdf-fortran? I don't understand the relationship between 
> netcdf, netcdf-c and netcdf-fortran. I guess this is a very fundamental 
> question, I would be appreciated if you could explain this a little bit.... 
> thank you!
> Looking forward to your reply.
> 
> Best regards
> Yifan
> 
> 


Ticket Details
===================
Ticket ID: OKF-351804
Department: Support netCDF
Priority: Normal
Status: Closed
===================
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