Trace number 1522296

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 0.021996 0.021804

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/400/
unif-k3-r4.25-v400-c1700-S172053238-003.cnf
MD5SUMd645722ef726f8347e5e1cd19bda8fdf
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.013997
Satisfiable
(Un)Satisfiability was proved
Number of variables400
Number of clauses1700
Sum of the clauses size5100
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31700
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.02	s SATISFIABLE
0.00/0.02	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 0
0.00/0.02	c input file instance-1522296-1238581795.cnf, flips 9641

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-1522296-1238581795/watcher-1522296-1238581795 -o /tmp/evaluation-result-1522296-1238581795/solver-1522296-1238581795 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522296-1238581795.cnf 870115488 

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: 1.00 1.00 1.00 3/68 9779
/proc/meminfo: memFree=981168/2055920 swapFree=4176188/4192956
[pid=9779] ppid=9777 vsize=335916 CPUtime=0
/proc/9779/stat : 9779 (iPAWS) R 9777 9779 9313 0 -1 4194304 521 0 0 0 0 0 0 0 18 0 1 0 1130841123 343977984 505 1992294400 134512640 135114423 4294956208 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/9779/statm: 83979 510 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.021804
CPU time (s): 0.021996
CPU user time (s): 0.017997
CPU system time (s): 0.003999
CPU usage (%): 100.88
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.017997
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= 935
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 0.004999 second system time

The end

Launcher Data 

Begin job on node59 at 2009-04-01 12:29:55
IDJOB=1522296
IDBENCH=70691
IDSOLVER=516
FILE ID=node59/1522296-1238581795
PBS_JOBID= 9062189
Free space on /tmp= 66248 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/400/unif-k3-r4.25-v400-c1700-S172053238-003.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522296-1238581795/watcher-1522296-1238581795 -o /tmp/evaluation-result-1522296-1238581795/solver-1522296-1238581795 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522296-1238581795.cnf 870115488

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

MD5SUM BENCH= d645722ef726f8347e5e1cd19bda8fdf
RANDOM SEED=870115488

node59.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		: 3000.209
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		: 3000.209
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:        981648 kB
Buffers:        111920 kB
Cached:         852976 kB
SwapCached:      10156 kB
Active:         226528 kB
Inactive:       749908 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        981648 kB
SwapTotal:     4192956 kB
SwapFree:      4176188 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          16732 kB
Slab:            83312 kB
Committed_AS:  3141572 kB
PageTables:       1720 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= 66248 MiB
End job on node59 at 2009-04-01 12:29:55