Trace number 1522265

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 0.012997 0.012394

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S1161147107-031.cnf
MD5SUM4cc7ee2f20081e6ebd36addd568f2c4e
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables520
Number of clauses2210
Sum of the clauses size6630
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32210
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

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 0
0.00/0.01	c input file instance-1522265-1238573123.cnf, flips 1647

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-1522265-1238573123/watcher-1522265-1238573123 -o /tmp/evaluation-result-1522265-1238573123/solver-1522265-1238573123 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522265-1238573123.cnf 956051749 

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: 0.99 1.00 1.00 2/70 10202
/proc/meminfo: memFree=1009968/2055920 swapFree=4170592/4192956
[pid=10202] ppid=10200 vsize=335916 CPUtime=0
/proc/10202/stat : 10202 (iPAWS) R 10200 10202 9513 0 -1 4194304 486 0 0 0 0 0 0 0 18 0 1 0 1129974951 343977984 471 1992294400 134512640 135114423 4294956208 18446744073709551615 134533972 0 0 4096 0 0 0 0 17 1 0 0
/proc/10202/statm: 83979 471 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.012394
CPU time (s): 0.012997
CPU user time (s): 0.006998
CPU system time (s): 0.005999
CPU usage (%): 104.865
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.006998
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 941
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 0.007998 second system time

The end

Launcher Data 

Begin job on node45 at 2009-04-01 10:05:23
IDJOB=1522265
IDBENCH=70660
IDSOLVER=516
FILE ID=node45/1522265-1238573123
PBS_JOBID= 9062163
Free space on /tmp= 66416 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S1161147107-031.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522265-1238573123/watcher-1522265-1238573123 -o /tmp/evaluation-result-1522265-1238573123/solver-1522265-1238573123 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522265-1238573123.cnf 956051749

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

MD5SUM BENCH= 4cc7ee2f20081e6ebd36addd568f2c4e
RANDOM SEED=956051749

node45.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		: 3000.285
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:       1010384 kB
Buffers:        110476 kB
Cached:         827024 kB
SwapCached:      11508 kB
Active:         202756 kB
Inactive:       747716 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1010384 kB
SwapTotal:     4192956 kB
SwapFree:      4170592 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          18672 kB
Slab:            80336 kB
Committed_AS:  2736588 kB
PageTables:       1900 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= 66416 MiB
End job on node45 at 2009-04-01 10:05:23