Trace number 1522320

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 0.025995 0.027043

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S957997002-040.cnf
MD5SUM92eaf07e43795c59dd53e3c833d9e0f0
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.017996
Satisfiable
(Un)Satisfiability was proved
Number of variables480
Number of clauses2040
Sum of the clauses size6120
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32040
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 0
0.00/0.02	c input file instance-1522320-1238589217.cnf, flips 12897

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-1522320-1238589217/watcher-1522320-1238589217 -o /tmp/evaluation-result-1522320-1238589217/solver-1522320-1238589217 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522320-1238589217.cnf 1509990105 

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 0.98 1.00 2/64 10347
/proc/meminfo: memFree=1523152/2055920 swapFree=4176708/4192956
[pid=10347] ppid=10345 vsize=335916 CPUtime=0
/proc/10347/stat : 10347 (iPAWS) R 10345 10347 9525 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1131583742 343977984 469 1992294400 134512640 135114423 4294956208 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/10347/statm: 83979 470 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.027043
CPU time (s): 0.025995
CPU user time (s): 0.021996
CPU system time (s): 0.003999
CPU usage (%): 96.1249
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.021996
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 938
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 0.008998 second system time

The end

Launcher Data 

Begin job on node51 at 2009-04-01 14:33:37
IDJOB=1522320
IDBENCH=70715
IDSOLVER=516
FILE ID=node51/1522320-1238589217
PBS_JOBID= 9062221
Free space on /tmp= 65256 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S957997002-040.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522320-1238589217/watcher-1522320-1238589217 -o /tmp/evaluation-result-1522320-1238589217/solver-1522320-1238589217 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522320-1238589217.cnf 1509990105

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

MD5SUM BENCH= 92eaf07e43795c59dd53e3c833d9e0f0
RANDOM SEED=1509990105

node51.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		: 3000.234
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		: 3000.234
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:       1523568 kB
Buffers:         92020 kB
Cached:         341968 kB
SwapCached:      10052 kB
Active:         222540 kB
Inactive:       222944 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1523568 kB
SwapTotal:     4192956 kB
SwapFree:      4176708 kB
Dirty:             708 kB
Writeback:           0 kB
Mapped:          17152 kB
Slab:            72832 kB
Committed_AS:  3152984 kB
PageTables:       1400 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= 65252 MiB
End job on node51 at 2009-04-01 14:33:37