Trace number 1522335

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 0.014997 0.0150219

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S1546885609-031.cnf
MD5SUMab528a6ad10c0959e2d17075599d3c26
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.014997
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 

0.00/0.01	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 0
0.00/0.01	c input file instance-1522335-1238594836.cnf, flips 4683

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-1522335-1238594836/watcher-1522335-1238594836 -o /tmp/evaluation-result-1522335-1238594836/solver-1522335-1238594836 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522335-1238594836.cnf 445920683 

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: 2.83 2.93 2.69 4/86 1836
/proc/meminfo: memFree=1666520/2055924 swapFree=4179644/4192956
[pid=1836] ppid=1834 vsize=335916 CPUtime=0
/proc/1836/stat : 1836 (iPAWS) R 1834 1836 1664 0 -1 4194304 676 0 0 0 0 0 0 0 20 0 1 0 485813990 343977984 660 1992294400 134512640 135114423 4294956208 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/1836/statm: 83979 665 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.0150219
CPU time (s): 0.014997
CPU user time (s): 0.011998
CPU system time (s): 0.002999
CPU usage (%): 99.8339
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.011998
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 0.004999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node83 at 2009-04-01 16:07:16
IDJOB=1522335
IDBENCH=70730
IDSOLVER=516
FILE ID=node83/1522335-1238594836
PBS_JOBID= 9068321
Free space on /tmp= 66508 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S1546885609-031.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522335-1238594836/watcher-1522335-1238594836 -o /tmp/evaluation-result-1522335-1238594836/solver-1522335-1238594836 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522335-1238594836.cnf 445920683

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

MD5SUM BENCH= ab528a6ad10c0959e2d17075599d3c26
RANDOM SEED=445920683

node83.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		: 3000.268
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		: 3000.268
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055924 kB
MemFree:       1667000 kB
Buffers:         78864 kB
Cached:         215336 kB
SwapCached:       7584 kB
Active:         208848 kB
Inactive:       103936 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1667000 kB
SwapTotal:     4192956 kB
SwapFree:      4179644 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          26044 kB
Slab:            60148 kB
Committed_AS:  1251152 kB
PageTables:       2680 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 node83 at 2009-04-01 16:07:16