Trace number 1522312

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
iPAWS 2009-03-22SAT 0.020996 0.021623

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/540/
unif-k3-r4.25-v540-c2295-S1332067449-041.cnf
MD5SUM2b606655a01fc0a35cd7131dc9f54b92
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.020996
Satisfiable
(Un)Satisfiability was proved
Number of variables540
Number of clauses2295
Sum of the clauses size6885
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32295
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.02	s SATISFIABLE
0.00/0.02	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 0
0.00/0.02	c input file instance-1522312-1238586288.cnf, flips 9094

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1522312-1238586288/watcher-1522312-1238586288 -o /tmp/evaluation-result-1522312-1238586288/solver-1522312-1238586288 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522312-1238586288.cnf 1132509990 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.99 2/64 18421
/proc/meminfo: memFree=1491464/2055920 swapFree=4175828/4192956
[pid=18421] ppid=18419 vsize=335916 CPUtime=0
/proc/18421/stat : 18421 (iPAWS) R 18419 18421 18356 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1131293810 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/18421/statm: 83979 469 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.021623
CPU time (s): 0.020996
CPU user time (s): 0.016997
CPU system time (s): 0.003999
CPU usage (%): 97.1003
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.016997
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 943
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= 2
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node33 at 2009-04-01 13:44:48
IDJOB=1522312
IDBENCH=70707
IDSOLVER=516
FILE ID=node33/1522312-1238586288
PBS_JOBID= 9062240
Free space on /tmp= 66132 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/540/unif-k3-r4.25-v540-c2295-S1332067449-041.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522312-1238586288/watcher-1522312-1238586288 -o /tmp/evaluation-result-1522312-1238586288/solver-1522312-1238586288 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522312-1238586288.cnf 1132509990

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 2b606655a01fc0a35cd7131dc9f54b92
RANDOM SEED=1132509990

node33.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.266
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.266
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1491944 kB
Buffers:         89752 kB
Cached:         380224 kB
SwapCached:      10920 kB
Active:         279060 kB
Inactive:       203344 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1491944 kB
SwapTotal:     4192956 kB
SwapFree:      4175828 kB
Dirty:             724 kB
Writeback:           0 kB
Mapped:          18160 kB
Slab:            67544 kB
Committed_AS:  3197060 kB
PageTables:       1400 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66132 MiB
End job on node33 at 2009-04-01 13:44:48