Trace number 1523953

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 0.017996 0.01826

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 

0.01/0.01	c try 1 flip j 5467
0.01/0.01	c A solution is found
0.01/0.01	s SATISFIABLE
0.01/0.01	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 
0.01/0.01	v 0 
0.01/0.01	c Done (mycputime is 0.010 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-1523953-1238589401/watcher-1523953-1238589401 -o /tmp/evaluation-result-1523953-1238589401/solver-1523953-1238589401 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523953-1238589401.cnf 1564206270 

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: 0.91 0.97 0.99 3/64 31563
/proc/meminfo: memFree=1162784/2055920 swapFree=4178912/4192956
[pid=31563] ppid=31561 vsize=412012 CPUtime=0
/proc/31563/stat : 31563 (NCVWr) R 31561 31563 30837 0 -1 4194304 146 0 0 0 0 0 0 0 18 0 1 0 1131602588 421900288 130 1992294400 134512640 135113558 4294956208 18446744073709551615 134526228 0 0 4096 0 0 0 0 17 1 0 0
/proc/31563/statm: 103003 130 55 146 0 101878 0

[startup+0.0148941 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 31563
/proc/meminfo: memFree=1162784/2055920 swapFree=4178912/4192956
[pid=31563] ppid=31561 vsize=416044 CPUtime=0.01
/proc/31563/stat : 31563 (NCVWr) R 31561 31563 30837 0 -1 4194304 212 0 0 0 1 0 0 0 18 0 1 0 1131602588 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531784 0 0 4096 0 0 0 0 17 1 0 0
/proc/31563/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 416044

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

[startup+0.0148941 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 31563
/proc/meminfo: memFree=1162784/2055920 swapFree=4178912/4192956
[pid=31563] ppid=31561 vsize=416044 CPUtime=0.01
/proc/31563/stat : 31563 (NCVWr) R 31561 31563 30837 0 -1 4194304 212 0 0 0 1 0 0 0 18 0 1 0 1131602588 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531784 0 0 4096 0 0 0 0 17 1 0 0
/proc/31563/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 416044

Child status: 10
Real time (s): 0.01826
CPU time (s): 0.017996
CPU user time (s): 0.014997
CPU system time (s): 0.002999
CPU usage (%): 98.5545
Max. virtual memory (cumulated for all children) (KiB): 416044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.014997
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 227
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 node47 at 2009-04-01 14:36:41
IDJOB=1523953
IDBENCH=70715
IDSOLVER=531
FILE ID=node47/1523953-1238589401
PBS_JOBID= 9062224
Free space on /tmp= 66368 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S957997002-040.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523953-1238589401/watcher-1523953-1238589401 -o /tmp/evaluation-result-1523953-1238589401/solver-1523953-1238589401 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523953-1238589401.cnf 1564206270

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

MD5SUM BENCH= 92eaf07e43795c59dd53e3c833d9e0f0
RANDOM SEED=1564206270

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:       1163264 kB
Buffers:        110180 kB
Cached:         678036 kB
SwapCached:       7792 kB
Active:         283720 kB
Inactive:       514868 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1163264 kB
SwapTotal:     4192956 kB
SwapFree:      4178912 kB
Dirty:            4616 kB
Writeback:           0 kB
Mapped:          16096 kB
Slab:            79988 kB
Committed_AS:  3177152 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 14:36:41