Trace number 1522263

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 0.021996 0.022153

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S146188995-071.cnf
MD5SUM890aea0df389e5329db583f37e858c1b
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.015996
Satisfiable
(Un)Satisfiability was proved
Number of variables520
Number of clauses2210
Sum of the clauses size6630
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32210
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 0
0.00/0.02	c input file instance-1522263-1238572677.cnf, flips 8914

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-1522263-1238572677/watcher-1522263-1238572677 -o /tmp/evaluation-result-1522263-1238572677/solver-1522263-1238572677 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522263-1238572677.cnf 203143265 

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 3/64 8455
/proc/meminfo: memFree=1478248/2055920 swapFree=4177220/4192956
[pid=8455] ppid=8453 vsize=335916 CPUtime=0
/proc/8455/stat : 8455 (iPAWS) R 8453 8455 7864 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1129933557 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/8455/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): 0.022153
CPU time (s): 0.021996
CPU user time (s): 0.015997
CPU system time (s): 0.005999
CPU usage (%): 99.2914
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.015997
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 941
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 0.003999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node20 at 2009-04-01 09:57:57
IDJOB=1522263
IDBENCH=70658
IDSOLVER=516
FILE ID=node20/1522263-1238572677
PBS_JOBID= 9070506
Free space on /tmp= 65684 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S146188995-071.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522263-1238572677/watcher-1522263-1238572677 -o /tmp/evaluation-result-1522263-1238572677/solver-1522263-1238572677 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522263-1238572677.cnf 203143265

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

MD5SUM BENCH= 890aea0df389e5329db583f37e858c1b
RANDOM SEED=203143265

node20.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		: 3000.235
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		: 3000.235
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:       1478664 kB
Buffers:         95308 kB
Cached:         380272 kB
SwapCached:       9532 kB
Active:         208556 kB
Inactive:       277980 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1478664 kB
SwapTotal:     4192956 kB
SwapFree:      4177220 kB
Dirty:             708 kB
Writeback:           0 kB
Mapped:          16664 kB
Slab:            76704 kB
Committed_AS:  3011288 kB
PageTables:       1404 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= 65680 MiB
End job on node20 at 2009-04-01 09:57:57