parallel netcdf largefile problem on huygens.sara.nl

[Galen Arnold]

I've built parallel netcdf 1.0.3 on huygens.sara.nl [a power6 machine running linux].  Even though the build claims largefile support:

arnoldg at p6012:~/parallel-netcdf-1.0.3> grep off_t config.log
configure:8287: checking for off_t
configure:12729: checking for off_t
configure:12787: checking size of off_t
ac_cv_sizeof_off_t=8
ac_cv_type_off_t=yes
arnoldg at p6012:~/parallel-netcdf-1.0.3> tail galen.config

parallel-netCDF features:
. parallel-netcdf configured WITH support for large files
. parallel-netcdf configured WITH fortran bindings
. parallel-netcdf configured WITH nonblocking routines
arnoldg at p6012:~/parallel-netcdf-1.0.3> 


...runtime errors occur unless I keep the filesize < 2G :

  51:** error **
  37:** error **
  45:** error **
  49:** error **
  51:ERROR in IOR.c (line 2165): file size must be < 2GiB.
  51:ERROR: Success
  51:** exiting **
  58:** error **
  33:** error **
  33:ERROR in IOR.c (line 2165): file size must be < 2GiB.
  33:ERROR: Success
  33:** exiting **
  13:** error **
  58:ERROR in IOR.c (line 2165): file size must be < 2GiB.
  58:ERROR: Success
  58:** exiting **

I manually set these for configure and parallel-netcdf just built ok after that:

arnoldg at p6012:~/parallel-netcdf-1.0.3> echo $CC
xlc_r
arnoldg at p6012:~/parallel-netcdf-1.0.3> echo $MPICC
mpcc
arnoldg at p6012:~/parallel-netcdf-1.0.3> echo $F77
xlf_r
arnoldg at p6012:~/parallel-netcdf-1.0.3> echo $MPIF77
mpfort
arnoldg at p6012:~/parallel-netcdf-1.0.3> 

Any ideas about what to try next ?

Galen Arnold
system engineer
NCSA