Trace number 1631241

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 0.05799 0.058754

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/500/
unif-k3-r4.25-v500-c2125-S2025169165-076.cnf
MD5SUM963b100dc4b220203d759e4d96e6c55d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.024995
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 

0.03/0.05	s SATISFIABLE
0.03/0.05	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
0.03/0.05	c input file instance-1631241-1240140573.cnf, flips 36481

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-1631241-1240140573/watcher-1631241-1240140573 -o /tmp/evaluation-result-1631241-1240140573/solver-1631241-1240140573 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1631241-1240140573.cnf 468807934 

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: 0.99 0.97 0.97 2/64 24991
/proc/meminfo: memFree=966000/2055920 swapFree=4192956/4192956
[pid=24991] ppid=24989 vsize=335916 CPUtime=0
/proc/24991/stat : 24991 (iPAWS) R 24989 24991 24809 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 42083652 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134533181 0 0 4096 0 0 0 0 17 1 0 0
/proc/24991/statm: 83979 469 54 146 0 83831 0

[startup+0.0396321 s]
/proc/loadavg: 0.99 0.97 0.97 2/64 24991
/proc/meminfo: memFree=966000/2055920 swapFree=4192956/4192956
[pid=24991] ppid=24989 vsize=335916 CPUtime=0.03
/proc/24991/stat : 24991 (iPAWS) R 24989 24991 24809 0 -1 4194304 933 0 0 0 3 0 0 0 18 0 1 0 42083652 343977984 917 1992294400 134512640 135114423 4294956224 18446744073709551615 134514764 0 0 4096 0 0 0 0 17 1 0 0
/proc/24991/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 335916

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

[startup+0.0396321 s]
/proc/loadavg: 0.99 0.97 0.97 2/64 24991
/proc/meminfo: memFree=966000/2055920 swapFree=4192956/4192956
[pid=24991] ppid=24989 vsize=335916 CPUtime=0.03
/proc/24991/stat : 24991 (iPAWS) R 24989 24991 24809 0 -1 4194304 933 0 0 0 3 0 0 0 18 0 1 0 42083652 343977984 917 1992294400 134512640 135114423 4294956224 18446744073709551615 134514764 0 0 4096 0 0 0 0 17 1 0 0
/proc/24991/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 0.058754
CPU time (s): 0.05799
CPU user time (s): 0.055991
CPU system time (s): 0.001999
CPU usage (%): 98.6996
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.055991
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= 941
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node66 at 2009-04-19 13:29:33
IDJOB=1631241
IDBENCH=70647
IDSOLVER=588
FILE ID=node66/1631241-1240140573
PBS_JOBID= 9157869
Free space on /tmp= 66372 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/500/unif-k3-r4.25-v500-c2125-S2025169165-076.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1631241-1240140573/watcher-1631241-1240140573 -o /tmp/evaluation-result-1631241-1240140573/solver-1631241-1240140573 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1631241-1240140573.cnf 468807934

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

MD5SUM BENCH= 963b100dc4b220203d759e4d96e6c55d
RANDOM SEED=468807934

node66.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		: 3000.263
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	: 5931.00
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		: 3000.263
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:        966480 kB
Buffers:         82568 kB
Cached:         927028 kB
SwapCached:          0 kB
Active:         323304 kB
Inactive:       700212 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        966480 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             704 kB
Writeback:           0 kB
Mapped:          23684 kB
Slab:            51940 kB
Committed_AS:   163248 kB
PageTables:       1360 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= 66372 MiB
End job on node66 at 2009-04-19 13:29:33