Trace number 1523794

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 0.505922 0.506852

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S227954525-082.cnf
MD5SUMae01fd57ec6a595afedf29818bd4a62c
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 

0.49/0.50	c try 1 flip j 325563
0.49/0.50	c A solution is found
0.49/0.50	s SATISFIABLE
0.49/0.50	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 
0.49/0.50	v 0 
0.49/0.50	c Done (mycputime is 0.500 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-1523794-1238573708/watcher-1523794-1238573708 -o /tmp/evaluation-result-1523794-1238573708/solver-1523794-1238573708 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523794-1238573708.cnf 296412195 

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: 0.92 0.98 1.11 3/64 31929
/proc/meminfo: memFree=1210408/2055920 swapFree=4176996/4192956
[pid=31929] ppid=31927 vsize=412012 CPUtime=0
/proc/31929/stat : 31929 (NCVWr) R 31927 31929 31237 0 -1 4194304 149 0 0 0 0 0 0 0 18 0 1 0 1130032932 421900288 133 1992294400 134512640 135113558 4294956208 18446744073709551615 134619510 0 0 4096 0 0 0 0 17 1 0 0
/proc/31929/statm: 103003 133 55 146 0 101878 0

[startup+0.0139339 s]
/proc/loadavg: 0.92 0.98 1.11 3/64 31929
/proc/meminfo: memFree=1210408/2055920 swapFree=4176996/4192956
[pid=31929] ppid=31927 vsize=416048 CPUtime=0.01
/proc/31929/stat : 31929 (NCVWr) R 31927 31929 31237 0 -1 4194304 216 0 0 0 1 0 0 0 18 0 1 0 1130032932 426033152 200 1992294400 134512640 135113558 4294956208 18446744073709551615 134534202 0 0 4096 0 0 0 0 17 1 0 0
/proc/31929/statm: 104012 200 57 146 0 102887 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 416048

[startup+0.102941 s]
/proc/loadavg: 0.92 0.98 1.11 3/64 31929
/proc/meminfo: memFree=1210408/2055920 swapFree=4176996/4192956
[pid=31929] ppid=31927 vsize=416048 CPUtime=0.1
/proc/31929/stat : 31929 (NCVWr) R 31927 31929 31237 0 -1 4194304 217 0 0 0 10 0 0 0 18 0 1 0 1130032932 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134533559 0 0 4096 0 0 0 0 17 1 0 0
/proc/31929/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416048

[startup+0.301959 s]
/proc/loadavg: 0.92 0.98 1.11 3/64 31929
/proc/meminfo: memFree=1210408/2055920 swapFree=4176996/4192956
[pid=31929] ppid=31927 vsize=416048 CPUtime=0.29
/proc/31929/stat : 31929 (NCVWr) R 31927 31929 31237 0 -1 4194304 217 0 0 0 29 0 0 0 19 0 1 0 1130032932 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134520688 0 0 4096 0 0 0 0 17 1 0 0
/proc/31929/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 416048

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

[startup+0.501976 s]
/proc/loadavg: 0.92 0.98 1.11 3/64 31929
/proc/meminfo: memFree=1210408/2055920 swapFree=4176996/4192956
[pid=31929] ppid=31927 vsize=416048 CPUtime=0.49
/proc/31929/stat : 31929 (NCVWr) R 31927 31929 31237 0 -1 4194304 217 0 0 0 49 0 0 0 20 0 1 0 1130032932 426033152 201 1992294400 134512640 135113558 4294956208 18446744073709551615 134531726 0 0 4096 0 0 0 0 17 1 0 0
/proc/31929/statm: 104012 201 58 146 0 102887 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 416048

Child status: 10
Real time (s): 0.506852
CPU time (s): 0.505922
CPU user time (s): 0.504923
CPU system time (s): 0.000999
CPU usage (%): 99.8165
Max. virtual memory (cumulated for all children) (KiB): 416048

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.504923
system time used= 0.000999
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= 0

runsolver used 0.002999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node50 at 2009-04-01 10:15:08
IDJOB=1523794
IDBENCH=70662
IDSOLVER=531
FILE ID=node50/1523794-1238573708
PBS_JOBID= 9062173
Free space on /tmp= 64220 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S227954525-082.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523794-1238573708/watcher-1523794-1238573708 -o /tmp/evaluation-result-1523794-1238573708/solver-1523794-1238573708 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523794-1238573708.cnf 296412195

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

MD5SUM BENCH= ae01fd57ec6a595afedf29818bd4a62c
RANDOM SEED=296412195

node50.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		: 3000.238
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		: 3000.238
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:       1210888 kB
Buffers:        106232 kB
Cached:         632120 kB
SwapCached:       9920 kB
Active:         228576 kB
Inactive:       521440 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1210888 kB
SwapTotal:     4192956 kB
SwapFree:      4176996 kB
Dirty:            4616 kB
Writeback:           0 kB
Mapped:          17308 kB
Slab:            81004 kB
Committed_AS:  3191408 kB
PageTables:       1456 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= 64216 MiB
End job on node50 at 2009-04-01 10:15:09