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[jasonsun98@hotmail.com]

Dear all, 

I'm doing test of optic according to the Tutorial.
just like toptic_3.in and toptic_4.in.
when I set ngkpt 3*4, 3*8, 3*16, the optic ran propertly.
and when I set 3*24, the "abinip" results look right, but the "optic" cann't 
run. 
the message said that:

Segmentation fault

and the log file is like this:
--------------------------------------
 Starting date : Mon 10 Oct 2005.
 
 Please, give the name of the data file ...
 The name of the data file is :
toptic_4.in                                                                   
  
                                              
 Please, give the name of the output file ...
 The name of the output file is :
toptic_4.out                                                                  
  
                                              
 Please, give the root name for the (non)linear optical data output file ...
 The root name of the output files is :
toptic_4
 
 rprimd(bohr)      =   0.00000   5.30000   5.30000
                       5.30000   0.00000   5.30000
                       5.30000   5.30000   0.00000
 natom             =       2
 nkpt,mband        =   27648       9
 ecut              =   2.00000 Ha
 fermie            =   0.00000 Ha   0.00000 eV

--------------------------------------

is 24*24*24 too large? my machine is a PC-cluster with 8 node (each node 
contains 2*xeon 3.0 GHz cpu, 2GB memory)

any suggestion and comments would be appreciated.

============================================== 
Jian SUN 
Physics Dept. of Nanjing University 
National Lab. of Solid State Microstructures 
22 Hankou Road, Gulou District 
Nanjing, Jiangsu Province 
210093 
China 
==============================================