Trace number 1522270

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 0.030995 0.031348

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/420/
unif-k3-r4.25-v420-c1785-S1362286908-061.cnf
MD5SUM647005b2285214f4136823936a28bcc9
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 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 

0.00/0.03	s SATISFIABLE
0.00/0.03	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
0.00/0.03	c input file instance-1522270-1238574338.cnf, flips 19296

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-1522270-1238574338/watcher-1522270-1238574338 -o /tmp/evaluation-result-1522270-1238574338/solver-1522270-1238574338 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522270-1238574338.cnf 1031385463 

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: 0.92 0.99 1.09 3/68 31151
/proc/meminfo: memFree=1688040/2055920 swapFree=4177828/4192956
[pid=31151] ppid=31149 vsize=335916 CPUtime=0
/proc/31151/stat : 31151 (iPAWS) R 31149 31151 31114 0 -1 4194304 497 0 0 0 0 0 0 0 18 0 1 0 1130095835 343977984 481 1992294400 134512640 135114423 4294956224 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/31151/statm: 83979 486 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.031348
CPU time (s): 0.030995
CPU user time (s): 0.025996
CPU system time (s): 0.004999
CPU usage (%): 98.874
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.025996
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= 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 0.004999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node52 at 2009-04-01 10:25:38
IDJOB=1522270
IDBENCH=70665
IDSOLVER=516
FILE ID=node52/1522270-1238574338
PBS_JOBID= 9062204
Free space on /tmp= 66400 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/420/unif-k3-r4.25-v420-c1785-S1362286908-061.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522270-1238574338/watcher-1522270-1238574338 -o /tmp/evaluation-result-1522270-1238574338/solver-1522270-1238574338 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522270-1238574338.cnf 1031385463

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

MD5SUM BENCH= 647005b2285214f4136823936a28bcc9
RANDOM SEED=1031385463

node52.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		: 3000.230
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		: 3000.230
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:       1688520 kB
Buffers:         82328 kB
Cached:         196460 kB
SwapCached:       7968 kB
Active:         196580 kB
Inactive:        92132 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1688520 kB
SwapTotal:     4192956 kB
SwapFree:      4177828 kB
Dirty:             768 kB
Writeback:           0 kB
Mapped:          15564 kB
Slab:            64228 kB
Committed_AS:  3199276 kB
PageTables:       1736 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= 66400 MiB
End job on node52 at 2009-04-01 10:25:38