Cadence environment setup: Cadence 6.1.5 is suddenly stopped

Hi everyone,

I had installed Cadence to my system. When I ran, Cadence was suddenly stopped. The log file is shown below:

\# Program start time UTC 2016.08.22 03:50:24.880
\# Local time Monday 22 August 2016, 12:50 pm
\o Program: @(#)$CDS: virtuoso version 6.1.5 06/11/2013 19:36 (sjfnl003) $
\o Hierarchy: /tools/cadence/IC615/tools.lnx86/dfII/
\o Sub version: sub-version IC6.1.5.500.17 (32-bit addresses)
\# Host name (type): xxxxx.com (i686)
\# Operating system: Linux 2.6.18-308.el5 #1 SMP Tue Feb 21 20:05:41 EST 2012
\# X display name (WxH): localhost:13.0 (2960x1050)
\# Available geometry: TL(0:0) BR(2959:1049)
\# X server: Moba/X
\# Depth of Visual (Root): 24 (24)
\# Number of Planes Used: 24
\# X version: 11.0 (vendor release 11603000)
\# X resource pool: base 0x800000, mask 0x1fffff (2097151), shift 0
\# current id 0x6a, current max 0x1ffffa (2097146)
\# Memory report: maximum data size 4294967295 (0xffffffff) bytes
\# Memory report: maximum process size 4294967295 (0xffffffff) bytes
\# Initial sbrk value: 381931520 (0x16c3d000) bytes
\# Available memory: 22839744 (0x15c81c0) kilobytes
\# System memory: 23598052 (0x16813e4) kilobytes
\# Maximum memory size: 3947659263 (0xeb4c7fff) bytes
\# Max mem available: 3947659263 (0xeb4c7fff) bytes
\# Initial memory used: 34623488 (0x2105000) bytes
\# process size: 341233664 (0x1456d000) bytes
\# Qt version: 4.5.3
\# Window Manager: other
\# User Name: user1
\o Working Directory: xxxxx.com:/home/user1/test1
\# Process Id: 14887
\o
\o COPYRIGHT © 1992-2013 CADENCE DESIGN SYSTEMS INC. ALL RIGHTS RESERVED.
\o © 1992-2013 UNIX SYSTEMS Laboratories INC.,
\o Reproduced with permission.
\o
\o This Cadence Design Systems program and online documentation are
\o proprietary/confidential information and may be disclosed/used only
\o as authorized in a license agreement controlling such use and disclosure.
\o
\o RESTRICTED RIGHTS NOTICE (SHORT FORM)
\o Use/reproduction/disclosure is subject to restriction
\o set forth at FAR 1252.227-19 or its equivalent.

Please give me instruction to fix this problem. Thank in advanced.