Trace number 3495157

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
OptimuS p100_sourceUNSAT 7.38588 7.38546

General information on the benchmark

Nameapplication/leberre/
2dimensionalstrippacking/E05N15.cnf
MD5SUM6fc4bfeade2d9b21dd29baf376895a0e
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.041993
Satisfiable
(Un)Satisfiability was proved
Number of variables4740
Number of clauses43573
Sum of the clauses size228192
Maximum clause length45
Minimum clause length1
Number of clauses of size 146
Number of clauses of size 212551
Number of clauses of size 37942
Number of clauses of size 41140
Number of clauses of size 52640
Number of clauses of size over 519254

Solver Data 

7.29/7.38	c - Reading the instance.. OK! Totally clauses:    43573; Vars:     4740; Time: 0.05
7.29/7.38	c - Unit propagation..     OK! Removed clauses:        0;                 Time: 0.00
7.29/7.38	c - Delete by resolution.. OK! Removed clauses:     1727;                 Time: 0.12
7.29/7.38	c   - Solving the original instance..
7.29/7.38	c     - OK - UNSAT! Continue to clause elimination..
7.29/7.38	c   - round:    1;   Skips in previous round:    0
7.29/7.38	c     - clauses done:  1%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 10%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 20%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 30%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 40%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 50%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 60%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 70%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 80%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 90%; among them skipped: 0.00%;
7.29/7.38	c     - clauses done: 99%; among them skipped: 0.00%;
7.29/7.38	c - Finish! Unsat core size: 73 / 43573; Time: 7.36 s
7.29/7.38	c - ---------------------------------------------------------------------------
7.29/7.38	c - Statistics: |    unit   |    BCE    | sat-saved | sat-check | unsat-check |
7.29/7.38	c -             |       0   |   35689   |      69   |       4   |    5050     |
7.29/7.38	c - ---------------------------------------------------------------------------
7.29/7.38	s UNSATISFIABLE
7.29/7.38	v 2985 2986 2987 2990 2991 2992 2994 2997 2998 2999 3002 3003 3004 3006 3009 3010 3013 3014 3015 3017 3020 3023 3024 3025 3027 3030 3048 3049 3051 3054 3055 3057 3060 3062 3065 3072 3183 3300 3405 4491 4514 4515 4516 4525 4526 4527 4529 4537 4538 4539 4541 4542 4546 4547 4548 4550 4551 4552 4556 4557 4558 4560 4561 4562 4563 4569 4570 4571 4573 4574 4575 4576 4577 0

Verifier Data 

OK	73

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.1 (svn: 988)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3495157-1307806561/watcher-3495157-1307806561 -o /tmp/evaluation-result-3495157-1307806561/solver-3495157-1307806561 -C 1800 -W 1850 -M 7680 OptimuS_release HOME/instance-3495157-1307806561.cnf 

running on 2 cores: 4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1850 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 3.01 2.49 2.80 4/189 1205
/proc/meminfo: memFree=30365724/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=19796 CPUtime=0 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 787 0 0 0 0 0 0 0 25 0 1 0 970886762 20271104 724 33554432000 4194304 4279399 140735775457600 18446744073709551615 4266297 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 4949 724 224 21 0 1586 0

[startup+0.010482 s]
/proc/loadavg: 3.01 2.49 2.80 4/189 1205
/proc/meminfo: memFree=30365724/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=21956 CPUtime=0 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 1384 0 0 0 0 0 0 0 25 0 1 0 970886762 22482944 1300 33554432000 4194304 4279399 140735775457600 18446744073709551615 4265489 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 5596 1302 224 21 0 2233 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 21956

[startup+0.104441 s]
/proc/loadavg: 3.01 2.49 2.80 4/189 1205
/proc/meminfo: memFree=30365724/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=33120 CPUtime=0.09 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4177 0 0 0 9 0 0 0 25 0 1 0 970886762 33914880 4065 33554432000 4194304 4279399 140735775457600 18446744073709551615 4209637 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8280 4065 251 21 0 4917 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 33120

[startup+0.300447 s]
/proc/loadavg: 3.01 2.49 2.80 4/189 1205
/proc/meminfo: memFree=30365724/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=33840 CPUtime=0.29 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4380 0 0 0 29 0 0 0 25 0 1 0 970886762 34652160 4216 33554432000 4194304 4279399 140735775457600 18446744073709551615 4260730 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8460 4216 260 21 0 5097 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 33840

[startup+0.700379 s]
/proc/loadavg: 3.01 2.49 2.80 4/189 1205
/proc/meminfo: memFree=30365724/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=33840 CPUtime=0.69 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4380 0 0 0 69 0 0 0 25 0 1 0 970886762 34652160 4216 33554432000 4194304 4279399 140735775457600 18446744073709551615 4210306 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8460 4216 260 21 0 5097 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 33840

[startup+1.50028 s]
/proc/loadavg: 3.01 2.49 2.80 5/190 1206
/proc/meminfo: memFree=30337468/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=33840 CPUtime=1.49 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4380 0 0 0 149 0 0 0 25 0 1 0 970886762 34652160 4216 33554432000 4194304 4279399 140735775457600 18446744073709551615 4208394 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8460 4216 260 21 0 5097 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 33840

[startup+3.101 s]
/proc/loadavg: 3.01 2.49 2.80 5/190 1206
/proc/meminfo: memFree=30321844/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=34528 CPUtime=3.09 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4571 0 0 0 309 0 0 0 25 0 1 0 970886762 35356672 4407 33554432000 4194304 4279399 140735775457600 18446744073709551615 4209243 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8632 4407 260 21 0 5269 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 34528

[startup+6.30046 s]
/proc/loadavg: 3.09 2.51 2.81 5/190 1206
/proc/meminfo: memFree=30269764/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=34528 CPUtime=6.29 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4571 0 0 0 629 0 0 0 25 0 1 0 970886762 35356672 4407 33554432000 4194304 4279399 140735775457600 18446744073709551615 4210147 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8632 4407 260 21 0 5269 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 34528

Solver just ended. Dumping a history of the last processes samples

[startup+7.10031 s]
/proc/loadavg: 3.09 2.51 2.81 5/190 1206
/proc/meminfo: memFree=30255256/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=34528 CPUtime=7.09 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4571 0 0 0 709 0 0 0 25 0 1 0 970886762 35356672 4407 33554432000 4194304 4279399 140735775457600 18446744073709551615 4210579 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8632 4407 260 21 0 5269 0
Current children cumulated CPU time (s) 7.09
Current children cumulated vsize (KiB) 34528

[startup+7.30028 s]
/proc/loadavg: 3.09 2.51 2.81 5/190 1206
/proc/meminfo: memFree=30255256/32951124 swapFree=67049456/67111528
[pid=1205] ppid=1203 vsize=34528 CPUtime=7.29 cores=4,6
/proc/1205/stat : 1205 (OptimuS_release) R 1203 1205 27853 0 -1 4202496 4585 0 0 0 729 0 0 0 25 0 1 0 970886762 35356672 4421 33554432000 4194304 4279399 140735775457600 18446744073709551615 4211029 0 0 4096 8388610 0 0 0 17 4 0 0 0
/proc/1205/statm: 8632 4421 260 21 0 5269 0
Current children cumulated CPU time (s) 7.29
Current children cumulated vsize (KiB) 34528

Child status: 20
Real time (s): 7.38546
CPU time (s): 7.38588
CPU user time (s): 7.37888
CPU system time (s): 0.006998
CPU usage (%): 100.006
Max. virtual memory (cumulated for all children) (KiB): 34528

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 7.37888
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4596
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 4
involuntary context switches= 12

runsolver used 0.010998 second user time and 0.030995 second system time

The end

Launcher Data 

Begin job on node118 at 2011-06-11 17:36:01
IDJOB=3495157
IDBENCH=83473
IDSOLVER=1987
FILE ID=node118/3495157-1307806561
RUNJOBID= node118-1307806520-955
PBS_JOBID= 13551034
Free space on /tmp= 74148 MiB

SOLVER NAME= OptimuS p100_source
BENCH NAME= SAT11/application/leberre/2dimensionalstrippacking/E05N15.cnf
COMMAND LINE= OptimuS_release BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3495157-1307806561/watcher-3495157-1307806561 -o /tmp/evaluation-result-3495157-1307806561/solver-3495157-1307806561 -C 1800 -W 1850 -M 7680  OptimuS_release HOME/instance-3495157-1307806561.cnf

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 6fc4bfeade2d9b21dd29baf376895a0e
RANDOM SEED=1461306050

node118.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.68
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.68
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.842
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5374.59
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      30366392 kB
Buffers:        273204 kB
Cached:        1613272 kB
SwapCached:      15436 kB
Active:         950080 kB
Inactive:      1437092 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      30366392 kB
SwapTotal:    67111528 kB
SwapFree:     67049456 kB
Dirty:            1776 kB
Writeback:           0 kB
AnonPages:      498260 kB
Mapped:           9548 kB
Slab:           131688 kB
PageTables:       5992 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   801084 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 74148 MiB
End job on node118 at 2011-06-11 17:36:08