As was mentioned in my earlier mail, it was discussed in the LAMMPS mailing list. The following link has the workaround:
http://sourceforge.net/mailarchive/message.php?msg_id=570912040803162058k643242dcv2fb4db9235c21dd9%40mail.gmail.com
Please also read the whole thread, wherein various LAMMPS users have suggested that it is better to create smaller files due to post-processing difficulties of such large files.
That said, in case you would like to search the LAMMPS user archives yourself you should go to:
http://sourceforge.net/mailarchive/forum.php?forum_name=lammps-users
This link is also available from the last part of the lammps-users mail.
Best’
Manoj
2009/11/20 Ram Chand <raguelmoon@…16…>