Trace number 310587

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, and are wall clock time (not CPU 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
FH 2007-02-08SAT 0.038993 0.0386429

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S1788789488-19-SAT.cnf
MD5SUM8dd20c2b2815f1615e92da9f7d25dd5d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.012997
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.03	c try 1 flip j 20797
0.00/0.03	c A solution is found
0.00/0.03	s SATISFIABLE
0.00/0.03	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 
0.00/0.03	v 0 
0.00/0.03	c Done (mycputime is 0.000 seconds)

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node39/watcher-310587-1172560340 -o ROOT/results/node39/solver-310587-1172560340 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310587-1172560340/FH /tmp/evaluation/310587-1172560340/instance-310587-1172560340.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 0.78 0.94 0.98 3/64 28433
/proc/meminfo: memFree=1829872/2055920 swapFree=4161536/4192956
[pid=28433] ppid=28431 vsize=244848 CPUtime=0
/proc/28433/stat : 28433 (FH) R 28431 28433 27619 0 -1 4194304 129 0 0 0 0 0 0 0 18 0 1 0 275989938 250724352 112 18446744073709551615 134512640 134936988 4294956720 18446744073709551615 134523624 0 0 4096 0 0 0 0 17 1 0 0
/proc/28433/statm: 61212 112 36 103 0 60716 0

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

Child status: 10
Real time (s): 0.0386429
CPU time (s): 0.038993
CPU user time (s): 0.035994
CPU system time (s): 0.002999
CPU usage (%): 100.906
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.035994
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 219
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= 8
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.002999 second system time

The end

Launcher Data (download as text)

Begin job on node39 on Tue Feb 27 07:12:20 UTC 2007

IDJOB= 310587
IDBENCH= 20291
IDSOLVER= 117
FILE ID= node39/310587-1172560340

PBS_JOBID= 3971883

Free space on /tmp= 66553 MiB

SOLVER NAME= FH 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S1788789488-19-SAT.cnf
COMMAND LINE= /tmp/evaluation/310587-1172560340/FH /tmp/evaluation/310587-1172560340/instance-310587-1172560340.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node39/watcher-310587-1172560340 -o ROOT/results/node39/solver-310587-1172560340 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310587-1172560340/FH /tmp/evaluation/310587-1172560340/instance-310587-1172560340.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  8dd20c2b2815f1615e92da9f7d25dd5d

RANDOM SEED= 954333308

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node39.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.285
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		: 3000.285
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:       1830344 kB
Buffers:         20384 kB
Cached:         134916 kB
SwapCached:      25852 kB
Active:          79568 kB
Inactive:       108116 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1830344 kB
SwapTotal:     4192956 kB
SwapFree:      4161536 kB
Dirty:            6296 kB
Writeback:           0 kB
Mapped:          15212 kB
Slab:            23928 kB
Committed_AS:   655284 kB
PageTables:       1412 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= 66553 MiB

End job on node39 on Tue Feb 27 07:12:21 UTC 2007