Trace number 1522253

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 0.363943 0.362625

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/500/
unif-k3-r4.25-v500-c2125-S1258122549-031.cnf
MD5SUMe4beefd25957794efe8088679c7fff55
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.026995
Satisfiable
(Un)Satisfiability was proved
Number of variables500
Number of clauses2125
Sum of the clauses size6375
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32125
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.29/0.36	s SATISFIABLE
0.29/0.36	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 0
0.29/0.36	c input file instance-1522253-1238570120.cnf, flips 263299

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-1522253-1238570120/watcher-1522253-1238570120 -o /tmp/evaluation-result-1522253-1238570120/solver-1522253-1238570120 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522253-1238570120.cnf 1620400799 

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 1.94 1.87 3/68 30913
/proc/meminfo: memFree=1688560/2055920 swapFree=4177828/4192956
[pid=30913] ppid=30911 vsize=335916 CPUtime=0
/proc/30913/stat : 30913 (iPAWS) R 30911 30913 30530 0 -1 4194304 486 0 0 0 0 0 0 0 18 0 1 0 1129673994 343977984 470 1992294400 134512640 135114423 4294956208 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/30913/statm: 83979 470 54 146 0 83831 0

[startup+0.0311999 s]
/proc/loadavg: 1.83 1.94 1.87 3/68 30913
/proc/meminfo: memFree=1688560/2055920 swapFree=4177828/4192956
[pid=30913] ppid=30911 vsize=335916 CPUtime=0.02
/proc/30913/stat : 30913 (iPAWS) R 30911 30913 30530 0 -1 4194304 932 0 0 0 2 0 0 0 18 0 1 0 1129673994 343977984 916 1992294400 134512640 135114423 4294956208 18446744073709551615 134516015 0 0 4096 0 0 0 0 17 1 0 0
/proc/30913/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 335916

[startup+0.101205 s]
/proc/loadavg: 1.83 1.94 1.87 3/68 30913
/proc/meminfo: memFree=1688560/2055920 swapFree=4177828/4192956
[pid=30913] ppid=30911 vsize=335916 CPUtime=0.09
/proc/30913/stat : 30913 (iPAWS) R 30911 30913 30530 0 -1 4194304 932 0 0 0 9 0 0 0 18 0 1 0 1129673994 343977984 916 1992294400 134512640 135114423 4294956208 18446744073709551615 134547187 0 0 4096 0 0 0 0 17 1 0 0
/proc/30913/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301219 s]
/proc/loadavg: 1.83 1.94 1.87 3/68 30913
/proc/meminfo: memFree=1688560/2055920 swapFree=4177828/4192956
[pid=30913] ppid=30911 vsize=335916 CPUtime=0.29
/proc/30913/stat : 30913 (iPAWS) R 30911 30913 30530 0 -1 4194304 932 0 0 0 29 0 0 0 19 0 1 0 1129673994 343977984 916 1992294400 134512640 135114423 4294956208 18446744073709551615 134546227 0 0 4096 0 0 0 0 17 1 0 0
/proc/30913/statm: 83979 916 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

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

Child status: 0
Real time (s): 0.362625
CPU time (s): 0.363943
CPU user time (s): 0.356945
CPU system time (s): 0.006998
CPU usage (%): 100.363
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.356945
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 940
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= 2

runsolver used 0.006998 second user time and 0.001999 second system time

The end

Launcher Data 

Begin job on node52 at 2009-04-01 09:15:20
IDJOB=1522253
IDBENCH=70648
IDSOLVER=516
FILE ID=node52/1522253-1238570120
PBS_JOBID= 9062165
Free space on /tmp= 66400 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/500/unif-k3-r4.25-v500-c2125-S1258122549-031.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522253-1238570120/watcher-1522253-1238570120 -o /tmp/evaluation-result-1522253-1238570120/solver-1522253-1238570120 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522253-1238570120.cnf 1620400799

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

MD5SUM BENCH= e4beefd25957794efe8088679c7fff55
RANDOM SEED=1620400799

node52.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		: 3000.230
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		: 3000.230
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:       1689040 kB
Buffers:         81992 kB
Cached:         196388 kB
SwapCached:       7968 kB
Active:         195484 kB
Inactive:        92828 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1689040 kB
SwapTotal:     4192956 kB
SwapFree:      4177828 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          15684 kB
Slab:            64148 kB
Committed_AS:  3199136 kB
PageTables:       1736 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= 66400 MiB
End job on node52 at 2009-04-01 09:15:20