file size limit

[zilore mumba]

Help needed.
I hade daily model analysis data of u and v components which is written to binary with a fortran program.
The data displays correctly in grads, but only up to day 16 out of 31. The fields displayed are exactly the same as the original data in GRIB format processed through gri2ctl and gribmap.
From day 17 the display command throws up the error as below. This is from a Windows platform). On LINUX the error indicated is slightly different ( request beyond data limits) 

The same fortran program write daily pressure data and dsiplays correctly up to day 31.
The wind data files size is of the order of 600kb for each of u and v
The pressure data file size is of the order of 200-300kB

Reading through the archive I see that 2GB seems to be the limit of the file size which grads can handle.
Could anyone  know the origin of the problem.

This is output for v component. t 1 and t 16 display correctly.
set t 30 gives the error as below

Zilore Mumba

ga-> open v925.ctl
Scanning description file:  v925.ctl
Data file v10.grb is open as file 1
LON set to -30 75
LAT set to -45 60
LEV set to 500 500
Time values set: 2007:8:1:0 2007:8:1:0
ga-> q file
File 1 : vcomp
  Descriptor: v925.ctl
  Binary: v10.grb
  Type = Gridded
  Xsize = 71  Ysize = 71  Zsize = 1  Tsize = 31
  Number of Variables = 1
    v 2 33 ** v wind [m/s]
ga-> d v
Contouring: -20 to 20 interval 5
ga-> c
ga-> set t 16
Time values set: 2007:8:16:0 2007:8:16:0
ga-> d v
Contouring: -12 to 12 interval 3
ga-> c
ga-> set t 30
Time values set: 2007:8:30:0 2007:8:30:0
ga-> d v
Low Level I/O Error:  Read error on data file
  Data file name = v10.grb
  Error reading 71 bytes at location 297348
Data Request Error:  Error for variable 'v'
  Error ocurred at column 1
DISPLAY error:  Invalid expression
  Expression = v
ga->


       
____________________________________________________________________________________
Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. 
http://answers.yahoo.com/dir/?link=list&sid=396545433
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20071016/9a68e210/attachment.html