Trace number 1522333

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 0.39094 0.391937

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S1367181683-025.cnf
MD5SUM0c6dae1feec9774fac72f3ea3b150662
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.019996
Satisfiable
(Un)Satisfiability was proved
Number of variables460
Number of clauses1955
Sum of the clauses size5865
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31955
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.29/0.39	s SATISFIABLE
0.29/0.39	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 0
0.29/0.39	c input file instance-1522333-1238594028.cnf, flips 310564

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-1522333-1238594028/watcher-1522333-1238594028 -o /tmp/evaluation-result-1522333-1238594028/solver-1522333-1238594028 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522333-1238594028.cnf 1043426055 

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 1.00 1.00 3/64 10563
/proc/meminfo: memFree=1522256/2055920 swapFree=4176708/4192956
[pid=10563] ppid=10561 vsize=335916 CPUtime=0
/proc/10563/stat : 10563 (iPAWS) R 10561 10563 10436 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1132064852 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/10563/statm: 83979 470 54 146 0 83831 0

[startup+0.039926 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 10563
/proc/meminfo: memFree=1522256/2055920 swapFree=4176708/4192956
[pid=10563] ppid=10561 vsize=335916 CPUtime=0.03
/proc/10563/stat : 10563 (iPAWS) R 10561 10563 10436 0 -1 4194304 930 0 0 0 3 0 0 0 18 0 1 0 1132064852 343977984 914 1992294400 134512640 135114423 4294956224 18446744073709551615 134517383 0 0 4096 0 0 0 0 17 1 0 0
/proc/10563/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 335916

[startup+0.10193 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 10563
/proc/meminfo: memFree=1522256/2055920 swapFree=4176708/4192956
[pid=10563] ppid=10561 vsize=335916 CPUtime=0.09
/proc/10563/stat : 10563 (iPAWS) R 10561 10563 10436 0 -1 4194304 930 0 0 0 9 0 0 0 18 0 1 0 1132064852 343977984 914 1992294400 134512640 135114423 4294956224 18446744073709551615 134517031 0 0 4096 0 0 0 0 17 1 0 0
/proc/10563/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301949 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 10563
/proc/meminfo: memFree=1522256/2055920 swapFree=4176708/4192956
[pid=10563] ppid=10561 vsize=335916 CPUtime=0.29
/proc/10563/stat : 10563 (iPAWS) R 10561 10563 10436 0 -1 4194304 930 0 0 0 29 0 0 0 19 0 1 0 1132064852 343977984 914 1992294400 134512640 135114423 4294956224 18446744073709551615 134547179 0 0 4096 0 0 0 0 17 1 0 0
/proc/10563/statm: 83979 914 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): 0.391937
CPU time (s): 0.39094
CPU user time (s): 0.385941
CPU system time (s): 0.004999
CPU usage (%): 99.7456
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.385941
system time used= 0.004999
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 0.007998 second system time

The end

Launcher Data 

Begin job on node51 at 2009-04-01 15:53:48
IDJOB=1522333
IDBENCH=70728
IDSOLVER=516
FILE ID=node51/1522333-1238594028
PBS_JOBID= 9068323
Free space on /tmp= 65256 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S1367181683-025.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522333-1238594028/watcher-1522333-1238594028 -o /tmp/evaluation-result-1522333-1238594028/solver-1522333-1238594028 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522333-1238594028.cnf 1043426055

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

MD5SUM BENCH= 0c6dae1feec9774fac72f3ea3b150662
RANDOM SEED=1043426055

node51.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		: 3000.234
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		: 3000.234
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:       1522672 kB
Buffers:         92472 kB
Cached:         342128 kB
SwapCached:      10052 kB
Active:         223600 kB
Inactive:       222524 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1522672 kB
SwapTotal:     4192956 kB
SwapFree:      4176708 kB
Dirty:             704 kB
Writeback:           0 kB
Mapped:          17180 kB
Slab:            73080 kB
Committed_AS:  3155280 kB
PageTables:       1400 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= 65252 MiB
End job on node51 at 2009-04-01 15:53:48