I am running the RegCM model, The following are the information that i am using to run the model. 
TRUELATL = 0.5 and TRUELATH = 25 
include that valuse and run ( 15 S-35 N and 50 E - 105 E)
 
With above detail ,Model is successfully running.
 
But , I want to run the  model for Map ( 25 S-45 N and 40 E - 115 E) for LAMCON Projection and using same value(.5,25) for truelatL and truelatH. With this value my model is taking too much time or can say model is being hang.
Although i have used different values  for truelatL and truelatH ,but i did not get success to run the model and getting the error exceed the limit.
Please let me know the correct value of trulatL and truelatH for above Map(25 S-45 N and 40 E - 115 E) for LAMCON Projection  and method to calculate the truelatL and truelatH value.
 
rm -f *.o terrain
ifort -tpp7 -g -cm -w -w90 -w95 -convert big_endian -c -L../../Commons/env/libli
nuxamd64/ -lnetcdf -Vaxlib terrain.f
ifort -tpp7 -g -cm -w -w90 -w95 -convert big_endian -o terrain terrain.o -L../..
/Commons/env/liblinuxamd64/ -lnetcdf -Vaxlib
 ntypec=           2
 iy=         194
 jx=         204
 ds=   40.00000    
 clat=   10.00000    
 clon=   77.50000    
 rin=   1.500000    
 iproj=LAMCON    
 **************************************************
 FILE ALREADY EXISTS:  ../../Input/
DOMAIN.INFO                           
 Do you want to overwrite the existing file? [y/n/q]
y    
 **************************************************
 FILE ALREADY EXISTS:  ../../Input/DOMAIN.CTL                            
 Do you want to overwrite the existing file? [y/n/q]
y
 ***** Terrain resolution (min):    2.000000    
 after calling SETUP
 PSX,PSI1 =    1.396263       1.134464    
 PSX,PSI1 =    1.396263       1.134464    
 XN,TRUELATL,TRUELATH =   0.2224100      0.5000000       25.00000    
 after calling MAP PROJECTION
 xminlat,xmaxlat,xminlon,xmaxlon,ntypec=     -24.84     43.98     34.04    121.3
8         2
 after calling MXMNLL
    5415540 terrain heights read from land use volume 
 after calling RDLDTR
 after calling XYOBSLL
  rin,ds(m) =   0.106E+08   0.132E+08
forrtl: error (69): process interrupted (SIGINT) 
Image              PC                Routine            Line        Source      
       
terrain            0000000000407FFC  Unknown               Unknown  Unknown 
terrain            00000000004064F7  Unknown               Unknown  Unknown
terrain            000000000040365C  Unknown               Unknown  Unknown
libc.so.6          0000003FD281D8B4  Unknown               Unknown  Unknown
terrain            0000000000403569  Unknown               Unknown  Unknown