Trace number 1522269

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 0.010997 0.0110171

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/420/
unif-k3-r4.25-v420-c1785-S1460100153-095.cnf
MD5SUM147f9c942ba89935aaa4b8c99ea683ac
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables420
Number of clauses1785
Sum of the clauses size5355
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31785
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 0
0.00/0.01	c input file instance-1522269-1238574123.cnf, flips 1059

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-1522269-1238574123/watcher-1522269-1238574123 -o /tmp/evaluation-result-1522269-1238574123/solver-1522269-1238574123 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522269-1238574123.cnf 918707942 

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: 2.19 2.31 1.91 3/68 23225
/proc/meminfo: memFree=1514880/2055920 swapFree=4175244/4192956
[pid=23225] ppid=23223 vsize=335916 CPUtime=0
/proc/23225/stat : 23225 (iPAWS) R 23223 23225 23188 0 -1 4194304 495 0 0 0 0 0 0 0 18 0 1 0 1130073932 343977984 479 1992294400 134512640 135114423 4294956224 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/23225/statm: 83979 484 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.0110171
CPU time (s): 0.010997
CPU user time (s): 0.006998
CPU system time (s): 0.003999
CPU usage (%): 99.8175
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.006998
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 937
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 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node60 at 2009-04-01 10:22:03
IDJOB=1522269
IDBENCH=70664
IDSOLVER=516
FILE ID=node60/1522269-1238574123
PBS_JOBID= 9062201
Free space on /tmp= 66548 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/420/unif-k3-r4.25-v420-c1785-S1460100153-095.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522269-1238574123/watcher-1522269-1238574123 -o /tmp/evaluation-result-1522269-1238574123/solver-1522269-1238574123 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522269-1238574123.cnf 918707942

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

MD5SUM BENCH= 147f9c942ba89935aaa4b8c99ea683ac
RANDOM SEED=918707942

node60.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		: 3000.202
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		: 3000.202
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:       1515360 kB
Buffers:         96120 kB
Cached:         351636 kB
SwapCached:      11040 kB
Active:         217788 kB
Inactive:       243000 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1515360 kB
SwapTotal:     4192956 kB
SwapFree:      4175244 kB
Dirty:             976 kB
Writeback:           0 kB
Mapped:          18356 kB
Slab:            65380 kB
Committed_AS:  3414316 kB
PageTables:       1712 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= 66548 MiB
End job on node60 at 2009-04-01 10:22:03