Trace number 1523785

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
NCVWr 2009-03-22SAT 0.595909 0.596904

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S621134782-041.cnf
MD5SUM09a6dc57cba44ea6f55eca37108c958d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.014997
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 

0.50/0.59	c try 1 flip j 383509
0.50/0.59	c A solution is found
0.50/0.59	s SATISFIABLE
0.50/0.59	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 
0.50/0.59	v 0 
0.50/0.59	c Done (mycputime is 0.590 seconds)

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-1523785-1238572941/watcher-1523785-1238572941 -o /tmp/evaluation-result-1523785-1238572941/solver-1523785-1238572941 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523785-1238572941.cnf 550068978 

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: 2.17 2.22 1.70 3/64 30246
/proc/meminfo: memFree=1165280/2055920 swapFree=4178912/4192956
[pid=30246] ppid=30244 vsize=412012 CPUtime=0
/proc/30246/stat : 30246 (NCVWr) R 30244 30246 29761 0 -1 4194304 167 0 0 0 0 0 0 0 18 0 1 0 1129956624 421900288 152 1992294400 134512640 135113558 4294956208 18446744073709551615 134619510 0 0 4096 0 0 0 0 17 1 0 0
/proc/30246/statm: 103003 153 56 146 0 101878 0

[startup+0.0700239 s]
/proc/loadavg: 2.17 2.22 1.70 3/64 30246
/proc/meminfo: memFree=1165280/2055920 swapFree=4178912/4192956
[pid=30246] ppid=30244 vsize=416048 CPUtime=0.06
/proc/30246/stat : 30246 (NCVWr) R 30244 30246 29761 0 -1 4194304 217 0 0 0 6 0 0 0 18 0 1 0 1129956624 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134520678 0 0 4096 0 0 0 0 17 1 0 0
/proc/30246/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 416048

[startup+0.102025 s]
/proc/loadavg: 2.17 2.22 1.70 3/64 30246
/proc/meminfo: memFree=1165280/2055920 swapFree=4178912/4192956
[pid=30246] ppid=30244 vsize=416048 CPUtime=0.1
/proc/30246/stat : 30246 (NCVWr) R 30244 30246 29761 0 -1 4194304 217 0 0 0 10 0 0 0 18 0 1 0 1129956624 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134534280 0 0 4096 0 0 0 0 17 1 0 0
/proc/30246/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416048

[startup+0.302046 s]
/proc/loadavg: 2.17 2.22 1.70 3/64 30246
/proc/meminfo: memFree=1165280/2055920 swapFree=4178912/4192956
[pid=30246] ppid=30244 vsize=416048 CPUtime=0.3
/proc/30246/stat : 30246 (NCVWr) R 30244 30246 29761 0 -1 4194304 217 0 0 0 30 0 0 0 19 0 1 0 1129956624 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134533581 0 0 4096 0 0 0 0 17 1 0 0
/proc/30246/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 416048

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

[startup+0.502068 s]
/proc/loadavg: 2.17 2.22 1.70 3/64 30246
/proc/meminfo: memFree=1165280/2055920 swapFree=4178912/4192956
[pid=30246] ppid=30244 vsize=416048 CPUtime=0.5
/proc/30246/stat : 30246 (NCVWr) R 30244 30246 29761 0 -1 4194304 217 0 0 0 50 0 0 0 20 0 1 0 1129956624 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134533633 0 0 4096 0 0 0 0 17 1 0 0
/proc/30246/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 416048

Child status: 10
Real time (s): 0.596904
CPU time (s): 0.595909
CPU user time (s): 0.595909
CPU system time (s): 0
CPU usage (%): 99.8333
Max. virtual memory (cumulated for all children) (KiB): 416048

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.595909
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 232
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 0.002999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node47 at 2009-04-01 10:02:21
IDJOB=1523785
IDBENCH=70659
IDSOLVER=531
FILE ID=node47/1523785-1238572941
PBS_JOBID= 9062179
Free space on /tmp= 66368 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S621134782-041.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523785-1238572941/watcher-1523785-1238572941 -o /tmp/evaluation-result-1523785-1238572941/solver-1523785-1238572941 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523785-1238572941.cnf 550068978

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

MD5SUM BENCH= 09a6dc57cba44ea6f55eca37108c958d
RANDOM SEED=550068978

node47.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		: 3000.216
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		: 3000.216
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:       1166024 kB
Buffers:        109012 kB
Cached:         677096 kB
SwapCached:       7792 kB
Active:         279900 kB
Inactive:       516604 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1166024 kB
SwapTotal:     4192956 kB
SwapFree:      4178912 kB
Dirty:            4628 kB
Writeback:           0 kB
Mapped:          16084 kB
Slab:            79404 kB
Committed_AS:  3144520 kB
PageTables:       1452 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= 66364 MiB
End job on node47 at 2009-04-01 10:02:22