Hi Asheer, There is no per-variable cache specification, but it is possible to request a buffer that is larger than the default 8192 bytes by using a particular parameter "chunksizehintp" to the special performance tuning interfaces nc__create() and nc__open(): http://www.unidata.ucar.edu/software/netcdf/old_docs/docs_3_6_3/netcdf-c.html#nc_005f_005fcreate http://www.unidata.ucar.edu/software/netcdf/old_docs/docs_3_6_3/netcdf-c.html#nc_005f_005fopen --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: ALJ-597135 Department: Support netCDF Priority: Normal Status: Closed