Trace number 1522327

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 0.049992 0.0501481

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S1924575376-025.cnf
MD5SUM6fb0ba561e085817334f61be44abbbd8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.035993
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 

0.04/0.04	s SATISFIABLE
0.04/0.04	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
0.04/0.04	c input file instance-1522327-1238591978.cnf, flips 34059

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-1522327-1238591978/watcher-1522327-1238591978 -o /tmp/evaluation-result-1522327-1238591978/solver-1522327-1238591978 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522327-1238591978.cnf 318774637 

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: 1.99 1.86 1.57 3/73 306
/proc/meminfo: memFree=1609168/2055920 swapFree=4177652/4192956
[pid=306] ppid=304 vsize=335916 CPUtime=0
/proc/306/stat : 306 (iPAWS) R 304 306 32202 0 -1 4194304 560 0 0 0 0 0 0 0 20 0 1 0 1131861787 343977984 545 1992294400 134512640 135114423 4294956208 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/306/statm: 83979 550 54 146 0 83831 0

[startup+0.0475589 s]
/proc/loadavg: 1.99 1.86 1.57 3/73 306
/proc/meminfo: memFree=1609168/2055920 swapFree=4177652/4192956
[pid=306] ppid=304 vsize=335916 CPUtime=0.04
/proc/306/stat : 306 (iPAWS) R 304 306 32202 0 -1 4194304 930 0 0 0 4 0 0 0 20 0 1 0 1131861787 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134515780 0 0 4096 0 0 0 0 17 1 0 0
/proc/306/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 335916

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

[startup+0.0475589 s]
/proc/loadavg: 1.99 1.86 1.57 3/73 306
/proc/meminfo: memFree=1609168/2055920 swapFree=4177652/4192956
[pid=306] ppid=304 vsize=335916 CPUtime=0.04
/proc/306/stat : 306 (iPAWS) R 304 306 32202 0 -1 4194304 930 0 0 0 4 0 0 0 20 0 1 0 1131861787 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134515780 0 0 4096 0 0 0 0 17 1 0 0
/proc/306/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 0.0501481
CPU time (s): 0.049992
CPU user time (s): 0.044993
CPU system time (s): 0.004999
CPU usage (%): 99.6887
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.044993
system time used= 0.004999
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 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node84 at 2009-04-01 15:19:38
IDJOB=1522327
IDBENCH=70722
IDSOLVER=516
FILE ID=node84/1522327-1238591978
PBS_JOBID= 9062236
Free space on /tmp= 66312 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S1924575376-025.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522327-1238591978/watcher-1522327-1238591978 -o /tmp/evaluation-result-1522327-1238591978/solver-1522327-1238591978 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522327-1238591978.cnf 318774637

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

MD5SUM BENCH= 6fb0ba561e085817334f61be44abbbd8
RANDOM SEED=318774637

node84.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		: 3000.231
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		: 3000.231
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:       1609584 kB
Buffers:         85184 kB
Cached:         271196 kB
SwapCached:       6944 kB
Active:         202504 kB
Inactive:       163148 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1609584 kB
SwapTotal:     4192956 kB
SwapFree:      4177652 kB
Dirty:             704 kB
Writeback:           0 kB
Mapped:          14860 kB
Slab:            65812 kB
Committed_AS:  3040576 kB
PageTables:       1980 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= 66312 MiB
End job on node84 at 2009-04-01 15:19:39