Trace number 1522255

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 0.25896 0.259752

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/500/
unif-k3-r4.25-v500-c2125-S1045096471-025.cnf
MD5SUM855b59e9a0f8a08a40646aec3f122ba2
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.047992
Satisfiable
(Un)Satisfiability was proved
Number of variables500
Number of clauses2125
Sum of the clauses size6375
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32125
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.19/0.25	s SATISFIABLE
0.19/0.25	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 0
0.19/0.25	c input file instance-1522255-1238570640.cnf, flips 203805

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-1522255-1238570640/watcher-1522255-1238570640 -o /tmp/evaluation-result-1522255-1238570640/solver-1522255-1238570640 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522255-1238570640.cnf 2115013531 

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 1.00 1.00 3/64 15501
/proc/meminfo: memFree=1629320/2055920 swapFree=4176304/4192956
[pid=15501] ppid=15499 vsize=335916 CPUtime=0
/proc/15501/stat : 15501 (iPAWS) R 15499 15501 15306 0 -1 4194304 486 0 0 0 0 0 0 0 20 0 1 0 1129726511 343977984 470 1992294400 134512640 135114423 4294956208 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/15501/statm: 83979 470 54 146 0 83831 0

[startup+0.0539299 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 15501
/proc/meminfo: memFree=1629320/2055920 swapFree=4176304/4192956
[pid=15501] ppid=15499 vsize=335916 CPUtime=0.04
/proc/15501/stat : 15501 (iPAWS) R 15499 15501 15306 0 -1 4194304 932 0 0 0 4 0 0 0 20 0 1 0 1129726511 343977984 916 1992294400 134512640 135114423 4294956208 18446744073709551615 134515078 0 0 4096 0 0 0 0 17 1 0 0
/proc/15501/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 335916

[startup+0.101937 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 15501
/proc/meminfo: memFree=1629320/2055920 swapFree=4176304/4192956
[pid=15501] ppid=15499 vsize=335916 CPUtime=0.09
/proc/15501/stat : 15501 (iPAWS) R 15499 15501 15306 0 -1 4194304 932 0 0 0 9 0 0 0 20 0 1 0 1129726511 343977984 916 1992294400 134512640 135114423 4294956208 18446744073709551615 134517056 0 0 4096 0 0 0 0 17 1 0 0
/proc/15501/statm: 83979 916 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+0.201957 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 15501
/proc/meminfo: memFree=1629320/2055920 swapFree=4176304/4192956
[pid=15501] ppid=15499 vsize=335916 CPUtime=0.19
/proc/15501/stat : 15501 (iPAWS) R 15499 15501 15306 0 -1 4194304 932 0 0 0 19 0 0 0 21 0 1 0 1129726511 343977984 916 1992294400 134512640 135114423 4294956208 18446744073709551615 134514877 0 0 4096 0 0 0 0 17 1 0 0
/proc/15501/statm: 83979 916 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): 0.259752
CPU time (s): 0.25896
CPU user time (s): 0.252961
CPU system time (s): 0.005999
CPU usage (%): 99.6951
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.252961
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= 940
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 0.003999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node53 at 2009-04-01 09:24:00
IDJOB=1522255
IDBENCH=70650
IDSOLVER=516
FILE ID=node53/1522255-1238570640
PBS_JOBID= 9062181
Free space on /tmp= 66040 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/500/unif-k3-r4.25-v500-c2125-S1045096471-025.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522255-1238570640/watcher-1522255-1238570640 -o /tmp/evaluation-result-1522255-1238570640/solver-1522255-1238570640 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522255-1238570640.cnf 2115013531

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

MD5SUM BENCH= 855b59e9a0f8a08a40646aec3f122ba2
RANDOM SEED=2115013531

node53.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		: 3000.264
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		: 3000.264
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1629736 kB
Buffers:         85800 kB
Cached:         247060 kB
SwapCached:      10540 kB
Active:         192168 kB
Inactive:       152744 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1629736 kB
SwapTotal:     4192956 kB
SwapFree:      4176304 kB
Dirty:             704 kB
Writeback:           0 kB
Mapped:          17824 kB
Slab:            67292 kB
Committed_AS:  2623600 kB
PageTables:       1384 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= 66040 MiB
End job on node53 at 2009-04-01 09:24:00