Trace number 1522280

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 0.024995 0.025776

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/560/
unif-k3-r4.25-v560-c2380-S1879859331-044.cnf
MD5SUM7a99883e1d20acc28491f28db1ea5f95
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.024995
Satisfiable
(Un)Satisfiability was proved
Number of variables560
Number of clauses2380
Sum of the clauses size7140
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32380
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 -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 0
0.00/0.02	c input file instance-1522280-1238576811.cnf, flips 10300

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-1522280-1238576811/watcher-1522280-1238576811 -o /tmp/evaluation-result-1522280-1238576811/solver-1522280-1238576811 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522280-1238576811.cnf 1738332488 

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: 0.92 1.00 1.09 3/64 19531
/proc/meminfo: memFree=1539768/2055920 swapFree=4176720/4192956
[pid=19531] ppid=19529 vsize=335916 CPUtime=0
/proc/19531/stat : 19531 (iPAWS) R 19529 19531 19460 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1130346092 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/19531/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): 0.025776
CPU time (s): 0.024995
CPU user time (s): 0.017997
CPU system time (s): 0.006998
CPU usage (%): 96.9702
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.017997
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 944
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 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node34 at 2009-04-01 11:06:51
IDJOB=1522280
IDBENCH=70675
IDSOLVER=516
FILE ID=node34/1522280-1238576811
PBS_JOBID= 9062212
Free space on /tmp= 66380 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/560/unif-k3-r4.25-v560-c2380-S1879859331-044.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522280-1238576811/watcher-1522280-1238576811 -o /tmp/evaluation-result-1522280-1238576811/solver-1522280-1238576811 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522280-1238576811.cnf 1738332488

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

MD5SUM BENCH= 7a99883e1d20acc28491f28db1ea5f95
RANDOM SEED=1738332488

node34.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		: 3000.259
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		: 3000.259
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:       1540184 kB
Buffers:         89208 kB
Cached:         327620 kB
SwapCached:      10076 kB
Active:         197824 kB
Inactive:       230480 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1540184 kB
SwapTotal:     4192956 kB
SwapFree:      4176720 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          17172 kB
Slab:            73408 kB
Committed_AS:  2784104 kB
PageTables:       1388 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= 66380 MiB
End job on node34 at 2009-04-01 11:06:51