Trace number 310585

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
Hybrid1 2007-02-08SAT 0.018997 0.0210149

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)

0.00/0.01	c try 1 flip j 8134
0.00/0.01	c A solution is found
0.00/0.01	s SATISFIABLE
0.00/0.01	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 
0.00/0.01	v 0 
0.00/0.01	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/node2/watcher-310585-1172560338 -o ROOT/results/node2/solver-310585-1172560338 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310585-1172560338/Hybrid1 /tmp/evaluation/310585-1172560338/instance-310585-1172560338.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: 0.79 0.95 0.98 3/77 28564
/proc/meminfo: memFree=1666720/2055920 swapFree=4192812/4192956
[pid=28564] ppid=28562 vsize=244848 CPUtime=0
/proc/28564/stat : 28564 (Hybrid1) R 28562 28564 27407 0 -1 4194304 133 0 0 0 0 0 0 0 18 0 1 0 275988776 250724352 116 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134522039 0 0 4096 0 0 0 0 17 1 0 0
/proc/28564/statm: 61212 116 40 103 0 60716 0

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

Child status: 10
Real time (s): 0.0210149
CPU time (s): 0.018997
CPU user time (s): 0.018997
CPU system time (s): 0
CPU usage (%): 90.3978
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.018997
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 223
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 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node2 on Tue Feb 27 07:12:18 UTC 2007

IDJOB= 310585
IDBENCH= 20291
IDSOLVER= 115
FILE ID= node2/310585-1172560338

PBS_JOBID= 3971655

Free space on /tmp= 66552 MiB

SOLVER NAME= Hybrid1 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/310585-1172560338/Hybrid1 /tmp/evaluation/310585-1172560338/instance-310585-1172560338.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node2/watcher-310585-1172560338 -o ROOT/results/node2/solver-310585-1172560338 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310585-1172560338/Hybrid1 /tmp/evaluation/310585-1172560338/instance-310585-1172560338.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  8dd20c2b2815f1615e92da9f7d25dd5d

RANDOM SEED= 491114227

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node2.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		: 3000.247
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		: 3000.247
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:       1667128 kB
Buffers:         47740 kB
Cached:         210864 kB
SwapCached:          0 kB
Active:         255188 kB
Inactive:        63272 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1667128 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            6368 kB
Writeback:           0 kB
Mapped:          78784 kB
Slab:            55768 kB
Committed_AS:  1302596 kB
PageTables:       1812 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= 66552 MiB

End job on node2 on Tue Feb 27 07:12:18 UTC 2007