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[netCDF #JZI-995484]: Netcdf-4.0 error

Hi Vic,

> I have downloaded binaries and have installed the netcdf-4.0 for both
> the x86-64 and x86 Linux systems running both Fedora and Centos. Looks
> to work fine, until one user reports the following error when trying to
> use our pgf90
> on a test file . Here is what the user did to demonstrate the  problems
> on the 32 bit LINUX system.
> 
> The f90 code is below:
> program test_nf90
> use netcdf
> implicit none
> integer :: stat,ncid
> character(len=16) :: file
> !
> file = "test_nf90.nc"
> stat = nf90_create(ncid,NF90_CLOBBER,file)
> write(6,"('Created file ',a,'ncid=',i3)") file,ncid
> end program test_nf90
> 
> We set the the following which is location of the netcdf-4.0 files
> set lib_netcdf = /opt/local/netcdf/linux86/lib
> set inc_netcdf = /opt/local/netcdf/linux86/include
> pgf90 -o test_nf90 -Mfixed -I${inc_netcdf} -L${lib_netcdf} -lnetcdf
> test_nf90.F
> 
> And here's the error message:
> 
> PGF90-F-0004-Corrupt or Old Module file
> /opt/local/netcdf/linux86/include/netcdf.mod
> (test_nf90.F: 3)
> PGF90/x86-64 Linux 7.2-4: compilation aborted
> 
> I did look at the netcdf.mod file and others and did notice that
> netcdf.mod was older that the other include files
> -rw-r--r-- 1 tisone wheel   2655 Mar  4 14:04 hdf5.h
> -rw-r--r-- 1 tisone wheel 587643 Mar  4 14:04 hdf5.mod
> -rw-r--r-- 1 tisone wheel   1553 Mar  4 14:04 hdf5_hl.h
> -rw-r--r-- 1 tisone wheel  10123 Jun 29  2008 ncvalues.h
> -rw-r--r-- 1 tisone wheel  54013 Jun 29  2008 netcdf.h
> -rw-r--r-- 1 tisone wheel     23 Jun 29  2008 netcdf.hh
> -rw-r--r-- 1 tisone wheel  57616 Jun 29  2008 netcdf.inc
> -rw-r--r-- 1 tisone wheel 287084 Jun 29  2008 netcdf.mod
> -rw-r--r-- 1 tisone wheel  18916 Jun 29  2008 netcdfcpp.h
> -rwxr-xr-x 1 tisone wheel   5352 Mar  4 13:53 rice.h
> 
> I wasn't sure if I could a newer netcdf.mod files or if I would need to
> install the 4.1 version instead.
> Any help would be greatly appreciated.

Fortran-90 .mod (module) files are not portable across compilers,
architectures, or even different releases of the same compiler, as
Thomas Orgis points out in this thread:

  
http://www.unidata.ucar.edu/mailing_lists/archives/netcdfgroup/2009/msg00210.html

You are probably encountering that problem, if the binaries you
downloaded weren't built with the same version of pgf90 your user is
compiling with.  We don't distribute any .mod files built with pgf90,
so if you got the binary from us, that's the problem.

One way around the problem is to build the library from source using
the same compiler as your users.  That won't work if multiple Fortran 
compilers are in use, as each would generate different and 
incompatible .mod files.  Solutions for this latter case are 
discussed in the netcdfgroup thread referenced above, especially these 
postings:

  
http://www.unidata.ucar.edu/mailing_lists/archives/netcdfgroup/2009/msg00219.html
  
http://www.unidata.ucar.edu/mailing_lists/archives/netcdfgroup/2009/msg00222.html

Hope this helps.

--Russ

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: JZI-995484
Department: Support netCDF
Priority: Normal
Status: Closed