[gmx-users] g_principal: memory corruption

[kulleperuma.kulleperuma at utoronto.ca]

Hi all,

I am using Gromacs-4.0.5 g_principal for a system with a protein of  
132 resiudes, ~450 octane molecules and ~9000 water molecules, as below,

g_principal -f pos_Rep.xtc -s em.tpr -n index.ndx (Protein was the  
selected group ).
I get the follwing message soon after I selected Protein

Reading frame       0 time    0.000   *** glibc detected ***  
g_principal: malloc(): memory corruption: 0x000000000646c250 ***
======= Backtrace: =========
/lib64/libc.so.6[0x2b4788cd24ac]
/lib64/libc.so.6(__libc_calloc+0xc0)[0x2b4788cd3ce0]
g_principal[0x41071c]
g_principal[0x471aff]
g_principal[0x472237]
g_principal[0x410539]
g_principal[0x40251f]
g_principal[0x402139]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x2b4788c7d974]
g_principal[0x402079]
======= Memory map: ========

.................

This error didn't occur and ran smoothly when .gro file was selected  
for -f flag, but failed even for a shorter trajectory file.

What is the way around for this problem
Thank you in advance!