Trace number 1523779

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 0.538917 0.537578

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S1977519792-030.cnf
MD5SUMe6458c1749be20cdbcded67df8cce1cf
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.023996
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 

0.50/0.53	c try 1 flip j 331232
0.50/0.53	c A solution is found
0.50/0.53	s SATISFIABLE
0.50/0.53	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 
0.50/0.53	v 0 
0.50/0.53	c Done (mycputime is 0.530 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-1523779-1238572501/watcher-1523779-1238572501 -o /tmp/evaluation-result-1523779-1238572501/solver-1523779-1238572501 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523779-1238572501.cnf 1479247394 

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: 1.83 1.83 1.54 3/64 31731
/proc/meminfo: memFree=1210728/2055920 swapFree=4176996/4192956
[pid=31731] ppid=31729 vsize=412012 CPUtime=0
/proc/31731/stat : 31731 (NCVWr) R 31729 31731 31237 0 -1 4194304 149 0 0 0 0 0 0 0 18 0 1 0 1129912205 421900288 133 1992294400 134512640 135113558 4294956208 18446744073709551615 134526268 0 0 4096 0 0 0 0 17 1 0 0
/proc/31731/statm: 103003 133 55 146 0 101878 0

[startup+0.046319 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31731
/proc/meminfo: memFree=1210728/2055920 swapFree=4176996/4192956
[pid=31731] ppid=31729 vsize=416048 CPUtime=0.04
/proc/31731/stat : 31731 (NCVWr) R 31729 31731 31237 0 -1 4194304 218 0 0 0 4 0 0 0 18 0 1 0 1129912205 426033152 202 1992294400 134512640 135113558 4294956208 18446744073709551615 134531460 0 0 4096 0 0 0 0 17 1 0 0
/proc/31731/statm: 104012 202 58 146 0 102887 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 416048

[startup+0.102324 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31731
/proc/meminfo: memFree=1210728/2055920 swapFree=4176996/4192956
[pid=31731] ppid=31729 vsize=416048 CPUtime=0.1
/proc/31731/stat : 31731 (NCVWr) R 31729 31731 31237 0 -1 4194304 218 0 0 0 10 0 0 0 18 0 1 0 1129912205 426033152 202 1992294400 134512640 135113558 4294956208 18446744073709551615 134534174 0 0 4096 0 0 0 0 17 1 0 0
/proc/31731/statm: 104012 202 58 146 0 102887 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416048

[startup+0.30134 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31731
/proc/meminfo: memFree=1210728/2055920 swapFree=4176996/4192956
[pid=31731] ppid=31729 vsize=416048 CPUtime=0.3
/proc/31731/stat : 31731 (NCVWr) R 31729 31731 31237 0 -1 4194304 218 0 0 0 30 0 0 0 19 0 1 0 1129912205 426033152 202 1992294400 134512640 135113558 4294956208 18446744073709551615 134531237 0 0 4096 0 0 0 0 17 1 0 0
/proc/31731/statm: 104012 202 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+0.502358 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31731
/proc/meminfo: memFree=1210728/2055920 swapFree=4176996/4192956
[pid=31731] ppid=31729 vsize=416048 CPUtime=0.5
/proc/31731/stat : 31731 (NCVWr) R 31729 31731 31237 0 -1 4194304 218 0 0 0 50 0 0 0 20 0 1 0 1129912205 426033152 202 1992294400 134512640 135113558 4294956208 18446744073709551615 134532641 0 0 4096 0 0 0 0 17 1 0 0
/proc/31731/statm: 104012 202 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): 0.537578
CPU time (s): 0.538917
CPU user time (s): 0.536918
CPU system time (s): 0.001999
CPU usage (%): 100.249
Max. virtual memory (cumulated for all children) (KiB): 416048

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.536918
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 233
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= 3

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 09:55:01
IDJOB=1523779
IDBENCH=70657
IDSOLVER=531
FILE ID=node50/1523779-1238572501
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-S1977519792-030.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523779-1238572501/watcher-1523779-1238572501 -o /tmp/evaluation-result-1523779-1238572501/solver-1523779-1238572501 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523779-1238572501.cnf 1479247394

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

MD5SUM BENCH= e6458c1749be20cdbcded67df8cce1cf
RANDOM SEED=1479247394

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:       1211144 kB
Buffers:        106084 kB
Cached:         631996 kB
SwapCached:       9920 kB
Active:         228268 kB
Inactive:       521472 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1211144 kB
SwapTotal:     4192956 kB
SwapFree:      4176996 kB
Dirty:            4620 kB
Writeback:           0 kB
Mapped:          17308 kB
Slab:            80912 kB
Committed_AS:  3179560 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 09:55:02