Trace number 1631246

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 0.341947 0.341997

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/500/
unif-k3-r4.25-v500-c2125-S2056912842-027.cnf
MD5SUM14b591d0eb90ad9845c9a4137eb8ce97
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.301953
Satisfiable
(Un)Satisfiability was proved
Number of variables500
Number of clauses2125
Sum of the clauses size6375
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32125
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.29/0.34	s SATISFIABLE
0.29/0.34	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 0
0.29/0.34	c input file instance-1631246-1240140818.cnf, flips 266078

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1631246-1240140818/watcher-1631246-1240140818 -o /tmp/evaluation-result-1631246-1240140818/solver-1631246-1240140818 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1631246-1240140818.cnf 1430685575 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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: 1.01 1.00 1.00 3/65 22021
/proc/meminfo: memFree=1409104/2055920 swapFree=4192956/4192956
[pid=22021] ppid=22019 vsize=335916 CPUtime=0
/proc/22021/stat : 22021 (iPAWS) R 22019 22021 21875 0 -1 4194304 486 0 0 0 0 0 0 0 20 0 1 0 42111429 343977984 470 1992294400 134512640 135114423 4294956224 18446744073709551615 134533972 0 0 4096 0 0 0 0 17 1 0 0
/proc/22021/statm: 83979 470 54 146 0 83831 0

[startup+0.036463 s]
/proc/loadavg: 1.01 1.00 1.00 3/65 22021
/proc/meminfo: memFree=1409104/2055920 swapFree=4192956/4192956
[pid=22021] ppid=22019 vsize=335916 CPUtime=0.03
/proc/22021/stat : 22021 (iPAWS) R 22019 22021 21875 0 -1 4194304 932 0 0 0 3 0 0 0 20 0 1 0 42111429 343977984 916 1992294400 134512640 135114423 4294956224 18446744073709551615 134517052 0 0 4096 0 0 0 0 17 1 0 0
/proc/22021/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 335916

[startup+0.10147 s]
/proc/loadavg: 1.01 1.00 1.00 3/65 22021
/proc/meminfo: memFree=1409104/2055920 swapFree=4192956/4192956
[pid=22021] ppid=22019 vsize=335916 CPUtime=0.09
/proc/22021/stat : 22021 (iPAWS) R 22019 22021 21875 0 -1 4194304 932 0 0 0 9 0 0 0 20 0 1 0 42111429 343977984 916 1992294400 134512640 135114423 4294956224 18446744073709551615 134515552 0 0 4096 0 0 0 0 17 1 0 0
/proc/22021/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301493 s]
/proc/loadavg: 1.01 1.00 1.00 3/65 22021
/proc/meminfo: memFree=1409104/2055920 swapFree=4192956/4192956
[pid=22021] ppid=22019 vsize=335916 CPUtime=0.29
/proc/22021/stat : 22021 (iPAWS) R 22019 22021 21875 0 -1 4194304 932 0 0 0 29 0 0 0 22 0 1 0 42111429 343977984 916 1992294400 134512640 135114423 4294956224 18446744073709551615 134547220 0 0 4096 0 0 0 0 17 1 0 0
/proc/22021/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

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

Child status: 0
Real time (s): 0.341997
CPU time (s): 0.341947
CPU user time (s): 0.337948
CPU system time (s): 0.003999
CPU usage (%): 99.9854
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.337948
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= 940
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= 1

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node85 at 2009-04-19 13:33:38
IDJOB=1631246
IDBENCH=70652
IDSOLVER=588
FILE ID=node85/1631246-1240140818
PBS_JOBID= 9157897
Free space on /tmp= 126720 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/500/unif-k3-r4.25-v500-c2125-S2056912842-027.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1631246-1240140818/watcher-1631246-1240140818 -o /tmp/evaluation-result-1631246-1240140818/solver-1631246-1240140818 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1631246-1240140818.cnf 1430685575

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 14b591d0eb90ad9845c9a4137eb8ce97
RANDOM SEED=1430685575

node85.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		: 3000.238
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		: 3000.238
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1409520 kB
Buffers:         74488 kB
Cached:         500656 kB
SwapCached:          0 kB
Active:         220152 kB
Inactive:       368804 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1409520 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            1144 kB
Writeback:           0 kB
Mapped:          23496 kB
Slab:            43364 kB
Committed_AS:   162772 kB
PageTables:       1372 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= 126720 MiB
End job on node85 at 2009-04-19 13:33:38