Trace number 1522324

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 0.015997 0.016017

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 benchmark0.015997
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-1522324-1238590789.cnf, flips 4005

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-1522324-1238590789/watcher-1522324-1238590789 -o /tmp/evaluation-result-1522324-1238590789/solver-1522324-1238590789 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522324-1238590789.cnf 883679202 

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 0.99 3/64 25446
/proc/meminfo: memFree=1115336/2055920 swapFree=4176924/4192956
[pid=25446] ppid=25444 vsize=335916 CPUtime=0
/proc/25446/stat : 25446 (iPAWS) R 25444 25446 24992 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1131743847 343977984 469 1992294400 134512640 135114423 4294956208 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/25446/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): 0.016017
CPU time (s): 0.015997
CPU user time (s): 0.011998
CPU system time (s): 0.003999
CPU usage (%): 99.8751
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.011998
system time used= 0.003999
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 0.002999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node35 at 2009-04-01 14:59:49
IDJOB=1522324
IDBENCH=70719
IDSOLVER=516
FILE ID=node35/1522324-1238590789
PBS_JOBID= 9062231
Free space on /tmp= 66504 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-1522324-1238590789/watcher-1522324-1238590789 -o /tmp/evaluation-result-1522324-1238590789/solver-1522324-1238590789 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522324-1238590789.cnf 883679202

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

MD5SUM BENCH= 69b797da312e506f0ab25c6b8dcfe4ab
RANDOM SEED=883679202

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		: 3000.229
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		: 3000.229
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:       1115752 kB
Buffers:        110808 kB
Cached:         723612 kB
SwapCached:      10140 kB
Active:         316508 kB
Inactive:       529640 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1115752 kB
SwapTotal:     4192956 kB
SwapFree:      4176924 kB
Dirty:             744 kB
Writeback:           0 kB
Mapped:          17524 kB
Slab:            80024 kB
Committed_AS:  2853812 kB
PageTables:       1404 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= 66504 MiB
End job on node35 at 2009-04-01 14:59:49