Trace number 1631331

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 0.013997 0.014414

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/380/
unif-k3-r4.25-v380-c1615-S1516934767-080.cnf
MD5SUMe81ed5c11d3bffdd04a2753974045769
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 variables380
Number of clauses1615
Sum of the clauses size4845
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31615
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 0
0.00/0.01	c input file instance-1631331-1240142344.cnf, flips 4887

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1631331-1240142344/watcher-1631331-1240142344 -o /tmp/evaluation-result-1631331-1240142344/solver-1631331-1240142344 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1631331-1240142344.cnf 1802472083 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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: 0.87 0.94 0.98 3/65 24389
/proc/meminfo: memFree=1103320/2055920 swapFree=4192956/4192956
[pid=24389] ppid=24387 vsize=335916 CPUtime=0
/proc/24389/stat : 24389 (iPAWS) R 24387 24389 24000 0 -1 4194304 524 0 0 0 0 0 0 0 20 0 1 0 42264195 343977984 508 1992294400 134512640 135114423 4294956224 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/24389/statm: 83979 514 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.014414
CPU time (s): 0.013997
CPU user time (s): 0.009998
CPU system time (s): 0.003999
CPU usage (%): 97.1071
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.009998
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= 934
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 node81 at 2009-04-19 13:59:04
IDJOB=1631331
IDBENCH=70737
IDSOLVER=588
FILE ID=node81/1631331-1240142344
PBS_JOBID= 9157901
Free space on /tmp= 126584 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/380/unif-k3-r4.25-v380-c1615-S1516934767-080.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1631331-1240142344/watcher-1631331-1240142344 -o /tmp/evaluation-result-1631331-1240142344/solver-1631331-1240142344 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1631331-1240142344.cnf 1802472083

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= e81ed5c11d3bffdd04a2753974045769
RANDOM SEED=1802472083

node81.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		: 3000.234
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		: 3000.234
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:      2055920 kB
MemFree:       1103800 kB
Buffers:         89044 kB
Cached:         763744 kB
SwapCached:          0 kB
Active:         386124 kB
Inactive:       481404 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1103800 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             872 kB
Writeback:           0 kB
Mapped:          24488 kB
Slab:            70344 kB
Committed_AS:   199972 kB
PageTables:       1452 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 126584 MiB
End job on node81 at 2009-04-19 13:59:04