Trace number 3377701

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
borg-sat 11.03.02-seq-random (fixed)SAT 0.560914 0.667179

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S1617172756-030.SATISFIABLE.cnf
MD5SUM47049d4705301f4ac565d8b47d11d0a5
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.006998
Satisfiable
(Un)Satisfiability was proved
Number of variables700
Number of clauses2982
Sum of the clauses size8946
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32982
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.31/0.48	c INFO: loaded portfolio from HOME/etc/borg-mix+class.random.pickle
0.31/0.48	c INFO: solving HOME/instance-3377701-1305457055.cnf
0.31/0.48	c INFO: computing task features
0.31/0.49	c INFO: computed variable-clause graph statistics
0.31/0.49	c INFO: computed clause balance statistics
0.38/0.59	c INFO: computed variable balance statistics
0.38/0.59	c INFO: computed small-clause counts
0.38/0.59	c INFO: computed Horn-clause counts
0.38/0.59	c INFO: computed variable graph statistics
0.38/0.59	c INFO: collected features for HOME/instance-3377701-1305457055.cnf in 0.11 s
0.48/0.61	c INFO: running gnovelty+2@0 for 97 with 2399 remaining (b = 0.58)
0.48/0.66	s SATISFIABLE
0.48/0.66	v 1 -2 3 4 5 6 -7 8 -9 -10 -11 -12 13 -14 -15 16 -17 -18 19 20 21 -22 23 -24 -25 26 -27 28 29 30 -31 32 -33 34 35 -36 37 -38 -39 -40 -41 42 -43 -44 -45 46 -47 -48 -49 50 51 52 53 -54 55 56 -57 -58 59 60 61 62 63 -64 -65 66 -67 -68 -69 -70 71 -72 73 74 75 76 -77 78 79 -80 81 82 -83 -84 85 -86 87 88 -89 -90 -91 92 93 -94 -95 96 97 -98 99 100 -101 102 103 -104 105 106 -107 108 109 110 -111 -112 113 114 115 -116 117 -118 -119 120 121 122 123 -124 -125 126 127 128 -129 130 131 -132 133 134 -135 -136 137 -138 -139 140 141 142 143 144 145 146 -147 -148 149 -150 151 152 153 154 -155 -156 157 -158 159 -160 161 -162 -163 164 -165 166 -167 -168 169 -170 171 -172 173 -174 -175 -176 -177 178 179 -180 181 -182 -183 184 185 186 -187 -188 189 190 191 -192 -193 -194 -195 196 -197 -198 -199 200 -201 202 -203 -204 205 206 -207 -208 209 210 211 -212 -213 -214 -215 216 -217 218 -219 220 -221 222 223 224 -225 -226 -227 228 229 -230 231 232 233 -234 -235 236 -237 -238 -239 -240 -241 242 -243 -244 -245 246 247 -248 249 250 -251 252 -253 254 -255 256 -257 -258 259 -260 -261 -262 -263 264 -265 266 -267 268 -269 270 271 272 273 -274 275 -276 277 -278 -279 280 -281 282 -283 -284 -285 286 287 288 289 -290 291 -292 -293 -294 -295 -296 -297 298 299 300 -301 -302 -303 304 305 -306 -307 -308 309 -310 311 -312 -313 314 315 -316 317 -318 -319 -320 321 322 -323 -324 325 326 -327 -328 -329 330 -331 -332 -333 -334 -335 -336 337 338 -339 -340 -341 -342 -343 -344 -345 346 -347 -348 -349 350 -351 352 -353 354 -355 -356 -357 -358 359 360 361 -362 -363 -364 -365 366 367 368 369 370 -371 372 373 -374 375 376 -377 -378 379 380 381 382 -383 384 -385 386 -387 -388 -389 390 -391 392 -393 394 395 396 -397 398 399 400 -401 -402 -403 -404 405 406 -407 408 -409 410 411 -412 413 -414 415 416 -417 -418 -419 -420 421 -422 423 -424 -425 -426 427 -428 -429 430 -431 -432 433 -434 435 436 437 438 439 -440 -441 442 443 -444 -445 446 -447 448 -449 -450 451 -452 453 454 -455 -456 -457 -458 459 460 -461 -462 -463 464 -465 466 467 -468 -469 470 471 472 473 -474 -475 -476 -477 -478 -479 -480 -481 -482 483 484 485 -486 487 -488 489 490 491 492 493 -494 -495 496 497 -498 499 500 -501 502 -503 504 505 -506 -507 -508 509 510 -511 -512 -513 514 515 516 -517 -518 -519 520 521 522 -523 524 -525 -526 527 -528 529 -530 531 532 -533 -534 535 -536 -537 -538 539 -540 -541 -542 543 -544 -545 546 -547 548 549 550 -551 552 553 -554 555 556 557 558 559 -560 561 562 -563 564 -565 566 -567 568 569 570 571 572 573 -574 575 -576 577 -578 -579 -580 -581 582 -583 -584 585 586 -587 588 -589 -590 591 -592 -593 -594 -595 596 597 -598 599 -600 601 -602 603 -604 -605 -606 607 -608 -609 610 611 612 -613 614 615 -616 617 -618 -619 620 621 622 -623 624 625 -626 -627 628 -629 -630 631 632 -633 634 -635 -636 -637 638 639 640 -641 -642 -643 -644 645 -646 647 -648 649 650 -651 652 -653 -654 655 -656 -657 -658 659 -660 661 662 663 -664 665 -666 667 -668 -669 -670 -671 672 673 674 675 676 -677 -678 -679 680 -681 682 683 684 685 -686 -687 688 689 690 691 692 693 694 695 696 697 698 699 -700 0

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 961)

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-3377701-1305457055/watcher-3377701-1305457055 -o /tmp/evaluation-result-3377701-1305457055/solver-3377701-1305457055 -C 2400 -W 1300 -M 7680 python HOME/solve HOME/etc/borg-mix+class.random.pickle HOME/instance-3377701-1305457055.cnf -seed 20536657 -budget 2400 

running on 2 cores: 4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 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: 1.18 1.15 1.87 5/270 24841
/proc/meminfo: memFree=20622892/32951124 swapFree=67056788/67111528
[pid=24841] ppid=24839 vsize=11796 CPUtime=0 cores=4,6
/proc/24841/stat : 24841 (runsolver) R 24839 24841 22784 0 -1 4202560 45 0 0 0 0 0 0 0 25 0 1 0 657303403 12079104 52 33554432000 4194304 5432360 140735670204544 18446744073709551615 5055511 0 2147483391 4096 24578 0 0 0 17 6 0 0 0
/proc/24841/statm: 2949 52 33 303 0 2643 0

[startup+0.059912 s]
/proc/loadavg: 1.18 1.15 1.87 5/270 24841
/proc/meminfo: memFree=20622892/32951124 swapFree=67056788/67111528
[pid=24841] ppid=24839 vsize=29792 CPUtime=0.03 cores=4,6
/proc/24841/stat : 24841 (python) S 24839 24841 22784 0 -1 4202496 1414 0 0 0 3 0 0 0 18 0 1 0 657303403 30507008 1258 33554432000 4194304 5683644 140733769716768 18446744073709551615 271550535680 0 2147483391 16781312 2 18446744071699469502 0 0 17 6 0 0 0
/proc/24841/statm: 7448 1258 443 364 0 818 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 29792

[startup+0.101001 s]
/proc/loadavg: 1.18 1.15 1.87 5/270 24841
/proc/meminfo: memFree=20622892/32951124 swapFree=67056788/67111528
[pid=24841] ppid=24839 vsize=93964 CPUtime=0.06 cores=4,6
/proc/24841/stat : 24841 (python) S 24839 24841 22784 0 -1 4202496 2694 0 0 0 4 2 0 0 17 0 1 0 657303403 96219136 2407 33554432000 4194304 5683644 140733769716768 18446744073709551615 271550535680 0 2147483391 16781312 2 18446744071699469502 0 0 17 6 0 0 0
/proc/24841/statm: 23491 2407 764 364 0 1623 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 93964

[startup+0.30262 s]
/proc/loadavg: 1.18 1.15 1.87 5/270 24841
/proc/meminfo: memFree=20622892/32951124 swapFree=67056788/67111528
[pid=24841] ppid=24839 vsize=144104 CPUtime=0.22 cores=4,6
/proc/24841/stat : 24841 (python) S 24839 24841 22784 0 -1 4202496 6251 932 1 0 17 5 0 0 17 0 1 0 657303403 147562496 4373 33554432000 4194304 5683644 140733769716768 18446744073709551615 271550535680 0 2147483391 16781312 2 18446744071699469502 0 0 17 6 0 0 0
/proc/24841/statm: 36026 4373 1185 364 0 3182 0
Current children cumulated CPU time (s) 0.22
Current children cumulated vsize (KiB) 144104

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

[startup+0.504942 s]
/proc/loadavg: 1.18 1.15 1.87 5/270 24841
/proc/meminfo: memFree=20622892/32951124 swapFree=67056788/67111528
[pid=24841] ppid=24839 vsize=278628 CPUtime=0.38 cores=4,6
/proc/24841/stat : 24841 (python) R 24839 24841 22784 0 -1 4202496 9384 932 1 0 30 8 0 0 17 0 1 0 657303403 285315072 7041 33554432000 4194304 5683644 140733769716768 18446744073709551615 271553946544 0 0 16781312 2 0 0 0 17 4 0 0 0
/proc/24841/statm: 69657 7041 1826 364 0 5581 0
Current children cumulated CPU time (s) 0.38
Current children cumulated vsize (KiB) 278628

[startup+0.604929 s]
/proc/loadavg: 1.18 1.15 1.87 5/270 24841
/proc/meminfo: memFree=20622892/32951124 swapFree=67056788/67111528
[pid=24841] ppid=24839 vsize=278640 CPUtime=0.48 cores=4,6
/proc/24841/stat : 24841 (python) R 24839 24841 22784 0 -1 4202496 9584 932 1 0 40 8 0 0 17 0 1 0 657303403 285327360 7075 33554432000 4194304 5683644 140733769716768 18446744073709551615 271554019613 0 0 16781312 2 0 0 0 17 4 0 0 0
/proc/24841/statm: 69660 7075 1860 364 0 5581 0
Current children cumulated CPU time (s) 0.48
Current children cumulated vsize (KiB) 278640

Child status: 0
Real time (s): 0.667179
CPU time (s): 0.560914
CPU user time (s): 0.45993
CPU system time (s): 0.100984
CPU usage (%): 84.0725
Max. virtual memory (cumulated for all children) (KiB): 278640

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.45993
system time used= 0.100984
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 16729
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 3010
involuntary context switches= 32

runsolver used 0 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node133 at 2011-05-15 12:57:35
IDJOB=3377701
IDBENCH=83010
IDSOLVER=1857
FILE ID=node133/3377701-1305457055
RUNJOBID= node133-1305457053-24712
PBS_JOBID= 13324869
Free space on /tmp= 73580 MiB

SOLVER NAME= borg-sat 11.03.02-seq-random (fixed)
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S1617172756-030.SATISFIABLE.cnf
COMMAND LINE= python DIR/solve DIR/etc/borg-mix+class.random.pickle BENCHNAME -seed RANDOMSEED -budget TIMEOUT
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3377701-1305457055/watcher-3377701-1305457055 -o /tmp/evaluation-result-3377701-1305457055/solver-3377701-1305457055 -C 2400 -W 1300 -M 7680  python HOME/solve HOME/etc/borg-mix+class.random.pickle HOME/instance-3377701-1305457055.cnf -seed 20536657 -budget 2400

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 47049d4705301f4ac565d8b47d11d0a5
RANDOM SEED=20536657

node133.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		: 2666.834
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	: 5333.66
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		: 2666.834
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		: 2666.834
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	: 5332.82
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		: 2666.834
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	: 6741.12
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		: 2666.834
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	: 5332.74
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		: 2666.834
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	: 5332.83
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		: 2666.834
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	: 5332.74
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		: 2666.834
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	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      20623048 kB
Buffers:        298316 kB
Cached:        4113792 kB
SwapCached:       8724 kB
Active:        8970916 kB
Inactive:      3064348 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20623048 kB
SwapTotal:    67111528 kB
SwapFree:     67056788 kB
Dirty:          127212 kB
Writeback:           4 kB
AnonPages:     7620080 kB
Mapped:          27096 kB
Slab:           203088 kB
PageTables:      26320 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS: 20999160 kB
VmallocTotal: 34359738367 kB
VmallocUsed:     33868 kB
VmallocChunk: 34359703231 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 73548 MiB
End job on node133 at 2011-05-15 12:57:36