AMBER Archive (2008)

Subject: AMBER: forrtl severe(174) error with minimization and md

From: john smith (johnsmithgr8_at_gmail.com)
Date: Wed Dec 10 2008 - 00:20:57 CST

Dear all,

I have compile the AMBER10 and AmberTools1.0 on IBM PC with Intel Pentium 4
processor using RedHat EL4 linux, AMBER was compiled with inter fortran
compiler. All the test have passed during the installation.
And I am trying to run molecular dynamics of ligand docked into the protein.
I have prepared the *.top and *.crd files. However, whaen I run the
sander it stops abruptly with the following error (for minimisation &
molecular dynamics both ).

forrtl: severe (174): SIGSEGV, segmentation fault occurred

Image PC Routine Line Source

libc.so.6 00489410 Unknown Unknown Unknown

libc.so.6 0048AF81 Unknown Unknown Unknown

sander 08754169 Unknown Unknown Unknown

sander 0872C08D Unknown Unknown Unknown

sander 0872F1A7 Unknown Unknown Unknown

libpthread.so.0 0011C7C0 Unknown Unknown Unknown

sander 083B2A92 Unknown Unknown Unknown

sander 0812B671 Unknown Unknown Unknown

sander 081192ED Unknown Unknown Unknown

sander 08115C95 Unknown Unknown Unknown

sander 0804B1F5 Unknown Unknown Unknown

libc.so.6 0043BE23 Unknown Unknown Unknown

sander 0804B131 Unknown Unknown Unknown

My input file is

m8-minisation

&cntrl

imin=1, maxcyc =500,

ncyc = 250, ntb = 0, ntpr =1,

igb = 0, cut = 12,

/

The output file shows following lines

NSTEP ENERGY RMS GMAX NAME NUMBER

1 NaN NaN 7.0438E+08 HE1 4173

BOND = 512.6780 ANGLE = NaN DIHED = 3135.6235

VDWAALS = 70560903.2313 EEL = -20856.2773 HBOND = 0.0000

1-4 VDW = 2043.2988 1-4 EEL = 14310.2031 RESTRAINT = 0.0000

NSTEP ENERGY RMS GMAX NAME NUMBER

2 NaN NaN 0.0000E+00 N 1

BOND = NaN ANGLE = NaN DIHED = NaN

VDWAALS = 0.0000 EEL = 0.0000 HBOND = 0.0000

1-4 VDW = NaN 1-4 EEL = NaN RESTRAINT = 0.0000

I had tried different value of cutoff and ntpr, but all gave the same
result. I cannot understand what the problem is. Please suggest me some
solution to this problem
thanks in advance
-John

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