NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Karsten, I also bumped into this problem (although I didn’t get any error message). If one of your dimension is unlimited then all parallel IO must be collective. Cheers, John From: Karsten Bolding [mailto:karsten@xxxxxxxxxxxxxxxxxxxx] Sent: 10 September 2014 11:26 To: netcdfgroup@xxxxxxxxxxxxxxxx Subject: [netcdfgroup] nf90_var_par_access - independent or collective Hello Compiling like: mpif90 simple_xy_par_wr2.f90 -I/opt/netcdff-4.4.1-gfortran-4.8-par/include/ /opt/netcdff-4.4.1-gfortran-4.8-par/lib/libnetcdff.a /opt/netcdf-4.3.3-rc1-gcc-4.8-par/lib/libnetcdf.a /opt/hdf5-1.8.13-gcc-4.8-par/lib/libhdf5_hl.a /opt/hdf5-1.8.13-gcc-4.8-par/lib/libhdf5.a -ldl -lm -lz -lcurl I can run: mpiexec -n 10 ./a.out with collective it works but with independent I get: NetCDF: Attempt to extend dataset during NC_INDEPENDENT I/O operation. Use nc_va NetCDF: Attempt to extend dataset during NC_INDEPENDENT I/O operation. Use nc_va NetCDF: Attempt to extend dataset during NC_INDEPENDENT I/O operation. Use nc_va STOP 2 NetCDF: Attempt to extend dataset during NC_INDEPENDENT I/O operation. Use nc_va any ideas? Karsten ________________________________ This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system.
netcdfgroup archives: