Trace number 1523905

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 0.075987 0.075889

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/440/
unif-k3-r4.25-v440-c1870-S1666821205-020.cnf
MD5SUMf4b3f375641fd9718c333ac8bdda10dc
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010998
Satisfiable
(Un)Satisfiability was proved
Number of variables440
Number of clauses1870
Sum of the clauses size5610
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31870
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.02/0.07	c try 1 flip j 47580
0.02/0.07	c A solution is found
0.02/0.07	s SATISFIABLE
0.02/0.07	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 
0.02/0.07	v 0 
0.02/0.07	c Done (mycputime is 0.070 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-1523905-1238583860/watcher-1523905-1238583860 -o /tmp/evaluation-result-1523905-1238583860/solver-1523905-1238583860 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523905-1238583860.cnf 42726290 

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: 1.00 1.02 1.19 3/76 7024
/proc/meminfo: memFree=1350672/2055920 swapFree=4127460/4192956
[pid=7024] ppid=7022 vsize=412012 CPUtime=0
/proc/7024/stat : 7024 (NCVWr) R 7022 7024 6554 0 -1 4194304 142 0 0 0 0 0 0 0 20 0 1 0 1131046972 421900288 126 1992294400 134512640 135113558 4294956208 18446744073709551615 134526317 0 0 4096 0 0 0 0 17 1 0 0
/proc/7024/statm: 103003 126 55 146 0 101878 0

[startup+0.0314539 s]
/proc/loadavg: 1.00 1.02 1.19 3/76 7024
/proc/meminfo: memFree=1350672/2055920 swapFree=4127460/4192956
[pid=7024] ppid=7022 vsize=415912 CPUtime=0.02
/proc/7024/stat : 7024 (NCVWr) R 7022 7024 6554 0 -1 4194304 206 0 0 0 2 0 0 0 20 0 1 0 1131046972 425893888 190 1992294400 134512640 135113558 4294956208 18446744073709551615 134531942 0 0 4096 0 0 0 0 17 1 0 0
/proc/7024/statm: 103978 190 58 146 0 102853 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 415912

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

[startup+0.0314539 s]
/proc/loadavg: 1.00 1.02 1.19 3/76 7024
/proc/meminfo: memFree=1350672/2055920 swapFree=4127460/4192956
[pid=7024] ppid=7022 vsize=415912 CPUtime=0.02
/proc/7024/stat : 7024 (NCVWr) R 7022 7024 6554 0 -1 4194304 206 0 0 0 2 0 0 0 20 0 1 0 1131046972 425893888 190 1992294400 134512640 135113558 4294956208 18446744073709551615 134531942 0 0 4096 0 0 0 0 17 1 0 0
/proc/7024/statm: 103978 190 58 146 0 102853 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 415912

Child status: 10
Real time (s): 0.075889
CPU time (s): 0.075987
CPU user time (s): 0.073988
CPU system time (s): 0.001999
CPU usage (%): 100.129
Max. virtual memory (cumulated for all children) (KiB): 415912

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.073988
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= 221
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 node63 at 2009-04-01 13:04:20
IDJOB=1523905
IDBENCH=70699
IDSOLVER=531
FILE ID=node63/1523905-1238583860
PBS_JOBID= 9062202
Free space on /tmp= 66484 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S1666821205-020.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523905-1238583860/watcher-1523905-1238583860 -o /tmp/evaluation-result-1523905-1238583860/solver-1523905-1238583860 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523905-1238583860.cnf 42726290

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

MD5SUM BENCH= f4b3f375641fd9718c333ac8bdda10dc
RANDOM SEED=42726290

node63.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		: 3000.285
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		: 3000.285
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:       1351088 kB
Buffers:         96584 kB
Cached:         467808 kB
SwapCached:      55360 kB
Active:         222548 kB
Inactive:       398672 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1351088 kB
SwapTotal:     4192956 kB
SwapFree:      4127460 kB
Dirty:            4608 kB
Writeback:           0 kB
Mapped:          14616 kB
Slab:            68172 kB
Committed_AS:  3413000 kB
PageTables:       2312 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66480 MiB
End job on node63 at 2009-04-01 13:04:20