Trace number 1522329

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 0.110982 0.114106

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S2067258640-036.cnf
MD5SUMd816900b718754e89a88330965d80e86
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.051991
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 

0.09/0.11	s SATISFIABLE
0.09/0.11	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
0.09/0.11	c input file instance-1522329-1238592759.cnf, flips 77414

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-1522329-1238592759/watcher-1522329-1238592759 -o /tmp/evaluation-result-1522329-1238592759/solver-1522329-1238592759 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522329-1238592759.cnf 1983195875 

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: 1.46 1.17 1.19 2/72 20654
/proc/meminfo: memFree=1667248/2055920 swapFree=4174692/4192956
[pid=20654] ppid=20652 vsize=328100 CPUtime=0
/proc/20654/stat : 20654 (iPAWS) R 20652 20654 20458 0 -1 4194304 358 0 0 0 0 0 0 0 20 0 1 0 1131937086 335974400 342 1992294400 134512640 135114423 4294956208 18446744073709551615 134533024 0 0 4096 0 0 0 0 17 1 0 0
/proc/20654/statm: 82025 352 53 146 0 81877 0

[startup+0.0242199 s]
/proc/loadavg: 1.46 1.17 1.19 2/72 20654
/proc/meminfo: memFree=1667248/2055920 swapFree=4174692/4192956
[pid=20654] ppid=20652 vsize=335916 CPUtime=0.01
/proc/20654/stat : 20654 (iPAWS) R 20652 20654 20458 0 -1 4194304 930 0 0 0 1 0 0 0 20 0 1 0 1131937086 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134517085 0 0 4096 0 0 0 0 17 1 0 0
/proc/20654/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 335916

[startup+0.101233 s]
/proc/loadavg: 1.46 1.17 1.19 2/72 20654
/proc/meminfo: memFree=1667248/2055920 swapFree=4174692/4192956
[pid=20654] ppid=20652 vsize=335916 CPUtime=0.09
/proc/20654/stat : 20654 (iPAWS) R 20652 20654 20458 0 -1 4194304 930 0 0 0 9 0 0 0 20 0 1 0 1131937086 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134514777 0 0 4096 0 0 0 0 17 1 0 0
/proc/20654/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

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

Child status: 0
Real time (s): 0.114106
CPU time (s): 0.110982
CPU user time (s): 0.103984
CPU system time (s): 0.006998
CPU usage (%): 97.2622
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.103984
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= 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= 1
involuntary context switches= 1

runsolver used 0.000999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node67 at 2009-04-01 15:32:39
IDJOB=1522329
IDBENCH=70724
IDSOLVER=516
FILE ID=node67/1522329-1238592759
PBS_JOBID= 9068314
Free space on /tmp= 66376 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S2067258640-036.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522329-1238592759/watcher-1522329-1238592759 -o /tmp/evaluation-result-1522329-1238592759/solver-1522329-1238592759 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522329-1238592759.cnf 1983195875

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

MD5SUM BENCH= d816900b718754e89a88330965d80e86
RANDOM SEED=1983195875

node67.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		: 3000.265
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		: 3000.265
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:       1667728 kB
Buffers:         81500 kB
Cached:         215480 kB
SwapCached:       9632 kB
Active:         188504 kB
Inactive:       119560 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1667728 kB
SwapTotal:     4192956 kB
SwapFree:      4174692 kB
Dirty:             708 kB
Writeback:           0 kB
Mapped:          16772 kB
Slab:            65172 kB
Committed_AS:  3265904 kB
PageTables:       2052 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= 66376 MiB
End job on node67 at 2009-04-01 15:32:40