Trace number 1631313

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
iPAWS 2009-03-22SAT 0.018996 0.0196461

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S1730125812-056.cnf
MD5SUM69b797da312e506f0ab25c6b8dcfe4ab
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.018996
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 

0.00/0.01	s SATISFIABLE
0.00/0.01	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
0.00/0.01	c input file instance-1631313-1240142155.cnf, flips 7509

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1631313-1240142155/watcher-1631313-1240142155 -o /tmp/evaluation-result-1631313-1240142155/solver-1631313-1240142155 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1631313-1240142155.cnf 693505425 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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 1.00 1.00 3/64 26623
/proc/meminfo: memFree=1225188/2055920 swapFree=4192956/4192956
[pid=26623] ppid=26621 vsize=335916 CPUtime=0
/proc/26623/stat : 26623 (iPAWS) R 26621 26623 26303 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 42248036 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/26623/statm: 83979 470 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.0196461
CPU time (s): 0.018996
CPU user time (s): 0.015997
CPU system time (s): 0.002999
CPU usage (%): 96.6912
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.015997
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= 938
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 0.003999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node35 at 2009-04-19 13:55:55
IDJOB=1631313
IDBENCH=70719
IDSOLVER=588
FILE ID=node35/1631313-1240142155
PBS_JOBID= 9157874
Free space on /tmp= 66360 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S1730125812-056.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1631313-1240142155/watcher-1631313-1240142155 -o /tmp/evaluation-result-1631313-1240142155/solver-1631313-1240142155 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1631313-1240142155.cnf 693505425

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 69b797da312e506f0ab25c6b8dcfe4ab
RANDOM SEED=693505425

node35.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		: 3000.214
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		: 3000.214
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:       1225668 kB
Buffers:         89096 kB
Cached:         640340 kB
SwapCached:          0 kB
Active:         317440 kB
Inactive:       425960 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1225668 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             704 kB
Writeback:           0 kB
Mapped:          23704 kB
Slab:            72880 kB
Committed_AS:   194032 kB
PageTables:       1396 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= 66360 MiB
End job on node35 at 2009-04-19 13:55:55