errors in using 'addfiles'

Hi all,
I was trying to use NCL to read the cmip5 data with "addfiles" command. But I encountered some errors that really confused me.
Here is my scripts:
>fils = systemfunc("ls ./zg/zg_Amon_GFDL-HIRAM-C180_amip_r1i1p1_*.nc")
>f = addfiles(fils,"r")
>ListSetType (f,"cat")
>HGT = f[:]->zg (this is line 8)
>printVarSummary(HGT)
and here is the error information:
fatal: Aggregating variable zg from file list variable f as specified would exceed maximum NCL variable size
fatal: Execute: Error occured at or near line 8 in file hgt.ncl
By the way, the version of my NCL is v6.0.0 and I think this version of NCL could support the data that larger than 2GB (my data is 4.7GB)
I am expecting for you advise. Thank you very much
Best regards,
                                                            Hai Wang
  

----------------
Hai Wang
 
College of Physical and Environmental Oceanography,
Ocean University of China
238, Songling Road, Qingdao, Shandong, China, 266100

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Received on Fri Jul 20 21:28:32 2012