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[netCDF #YTY-788071]: netcdf 4 GB variable size questions

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  • Subject: [netCDF #YTY-788071]: netcdf 4 GB variable size questions
  • Date: Fri, 18 May 2007 12:43:51 -0600
Jason,

One additional note is that netCDF record variables have no 4GB size limit, 
just a limit of 4GB for each record and about 4.18 billion records.  So even if 
you have no use for a record dimension along which to append growing data 
variables, by just using the record dimension for your variables' most slowly 
varying dimension, you get around the 4 GB size limit.

> ... Are there any modifications that will allow the
> model program to create a v3.6 netCDF file that will avoid this
> limitation? 

Although it may be possible to modify the netCDF-3 library to get around this 
limit on 64-bit platforms, the resulting files would be using a new format that 
would not be easily portable to 32-bit platforms or readable by existing netCDF 
software.  As Ed has pointed out, we may provide support for such a format in 
the future, but we can't commit to it yet.

--Russ

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



Ticket Details
===================
Ticket ID: YTY-788071
Department: Support netCDF
Priority: Normal
Status: Closed