Trace number 1522316

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 0.239963 0.240508

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/540/
unif-k3-r4.25-v540-c2295-S84716411-095.cnf
MD5SUMee6ebc8afc6634471ab0e2f554ddcb49
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.025996
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 

0.19/0.23	s SATISFIABLE
0.19/0.23	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
0.19/0.23	c input file instance-1522316-1238587785.cnf, flips 177929

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-1522316-1238587785/watcher-1522316-1238587785 -o /tmp/evaluation-result-1522316-1238587785/solver-1522316-1238587785 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522316-1238587785.cnf 2082019096 

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: 1.00 0.99 0.99 2/64 14948
/proc/meminfo: memFree=1243944/2055920 swapFree=4178352/4192956
[pid=14948] ppid=14946 vsize=335916 CPUtime=0
/proc/14948/stat : 14948 (iPAWS) R 14946 14948 14847 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1131441247 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/14948/statm: 83979 469 54 146 0 83831 0

[startup+0.0943751 s]
/proc/loadavg: 1.00 0.99 0.99 2/64 14948
/proc/meminfo: memFree=1243944/2055920 swapFree=4178352/4192956
[pid=14948] ppid=14946 vsize=335916 CPUtime=0.08
/proc/14948/stat : 14948 (iPAWS) R 14946 14948 14847 0 -1 4194304 935 0 0 0 8 0 0 0 18 0 1 0 1131441247 343977984 919 1992294400 134512640 135114423 4294956224 18446744073709551615 134547187 0 0 4096 0 0 0 0 17 1 0 0
/proc/14948/statm: 83979 919 57 146 0 83831 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 335916

[startup+0.101375 s]
/proc/loadavg: 1.00 0.99 0.99 2/64 14948
/proc/meminfo: memFree=1243944/2055920 swapFree=4178352/4192956
[pid=14948] ppid=14946 vsize=335916 CPUtime=0.09
/proc/14948/stat : 14948 (iPAWS) R 14946 14948 14847 0 -1 4194304 935 0 0 0 9 0 0 0 18 0 1 0 1131441247 343977984 919 1992294400 134512640 135114423 4294956224 18446744073709551615 134515622 0 0 4096 0 0 0 0 17 1 0 0
/proc/14948/statm: 83979 919 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

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

[startup+0.201383 s]
/proc/loadavg: 1.00 0.99 0.99 2/64 14948
/proc/meminfo: memFree=1243944/2055920 swapFree=4178352/4192956
[pid=14948] ppid=14946 vsize=335916 CPUtime=0.19
/proc/14948/stat : 14948 (iPAWS) R 14946 14948 14847 0 -1 4194304 935 0 0 0 19 0 0 0 18 0 1 0 1131441247 343977984 919 1992294400 134512640 135114423 4294956224 18446744073709551615 134516971 0 0 4096 0 0 0 0 17 1 0 0
/proc/14948/statm: 83979 919 57 146 0 83831 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 0.240508
CPU time (s): 0.239963
CPU user time (s): 0.234964
CPU system time (s): 0.004999
CPU usage (%): 99.7734
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.234964
system time used= 0.004999
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= 1

runsolver used 0.000999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node43 at 2009-04-01 14:09:45
IDJOB=1522316
IDBENCH=70711
IDSOLVER=516
FILE ID=node43/1522316-1238587785
PBS_JOBID= 9062247
Free space on /tmp= 63084 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/540/unif-k3-r4.25-v540-c2295-S84716411-095.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522316-1238587785/watcher-1522316-1238587785 -o /tmp/evaluation-result-1522316-1238587785/solver-1522316-1238587785 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522316-1238587785.cnf 2082019096

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

MD5SUM BENCH= ee6ebc8afc6634471ab0e2f554ddcb49
RANDOM SEED=2082019096

node43.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		: 3000.242
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		: 3000.242
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:       1244424 kB
Buffers:         93732 kB
Cached:         623528 kB
SwapCached:       8504 kB
Active:         308732 kB
Inactive:       418540 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1244424 kB
SwapTotal:     4192956 kB
SwapFree:      4178352 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          15728 kB
Slab:            70184 kB
Committed_AS:  2594040 kB
PageTables:       1448 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= 63084 MiB
End job on node43 at 2009-04-01 14:09:45