Trace number 298859

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, and are wall clock time (not CPU 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
Hybrid1 2007-02-08SAT 0.282956 0.285325

General information on the benchmark

Namerandom/OnTreshold/3SAT/v360/
unif-k3-r4.26-v360-c1533-S1806915801-08.SAT.shuffled.cnf
MD5SUMcf84a3dca136fb4dbd89b4b968109201
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.043993
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1533
Sum of the clauses size4599
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31533
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.20/0.28	c try 1 flip j 210562
0.20/0.28	c A solution is found
0.20/0.28	s SATISFIABLE
0.20/0.28	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 
0.20/0.28	v 0 
0.20/0.28	c Done (mycputime is 0.000 seconds)

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node76/watcher-298859-1171861590 -o ROOT/results/node76/solver-298859-1171861590 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/298859-1171861590/Hybrid1 /tmp/evaluation/298859-1171861590/instance-298859-1171861590.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 1.56 1.12 1.04 3/69 17117
/proc/meminfo: memFree=1128920/2055888 swapFree=4087076/4096564
[pid=17117] ppid=17115 vsize=244716 CPUtime=0
/proc/17117/stat : 17117 (Hybrid1) R 17115 17117 15486 0 -1 4194304 114 0 0 0 0 0 0 0 19 0 1 0 206117317 250589184 98 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134523624 0 0 4096 0 0 0 0 17 1 0 0
/proc/17117/statm: 61179 98 40 103 0 60683 0

[startup+0.106883 s]
/proc/loadavg: 1.56 1.12 1.04 3/69 17117
/proc/meminfo: memFree=1128920/2055888 swapFree=4087076/4096564
[pid=17117] ppid=17115 vsize=246416 CPUtime=0.1
/proc/17117/stat : 17117 (Hybrid1) R 17115 17117 15486 0 -1 4194304 178 0 0 0 10 0 0 0 20 0 1 0 206117317 252329984 159 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134552545 0 0 4096 0 0 0 0 17 1 0 0
/proc/17117/statm: 61604 159 44 103 0 61108 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 246416

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

[startup+0.208894 s]
/proc/loadavg: 1.56 1.12 1.04 3/69 17117
/proc/meminfo: memFree=1128920/2055888 swapFree=4087076/4096564
[pid=17117] ppid=17115 vsize=246416 CPUtime=0.2
/proc/17117/stat : 17117 (Hybrid1) R 17115 17117 15486 0 -1 4194304 178 0 0 0 20 0 0 0 21 0 1 0 206117317 252329984 159 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134551529 0 0 4096 0 0 0 0 17 1 0 0
/proc/17117/statm: 61604 159 44 103 0 61108 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 246416

Child status: 10
Real time (s): 0.285325
CPU time (s): 0.282956
CPU user time (s): 0.282956
CPU system time (s): 0
CPU usage (%): 99.1697
Max. virtual memory (cumulated for all children) (KiB): 246416

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.282956
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 191
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= 8
involuntary context switches= 0

runsolver used 0.003999 second user time and 0.003999 second system time

The end

Launcher Data (download as text)

Begin job on node76 on Mon Feb 19 05:06:30 UTC 2007

IDJOB= 298859
IDBENCH= 19996
IDSOLVER= 115
FILE ID= node76/298859-1171861590

PBS_JOBID= 3839743

Free space on /tmp= 66645 MiB

SOLVER NAME= Hybrid1 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v360/unif-k3-r4.26-v360-c1533-S1806915801-08.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/298859-1171861590/Hybrid1 /tmp/evaluation/298859-1171861590/instance-298859-1171861590.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node76/watcher-298859-1171861590 -o ROOT/results/node76/solver-298859-1171861590 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/298859-1171861590/Hybrid1 /tmp/evaluation/298859-1171861590/instance-298859-1171861590.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  cf84a3dca136fb4dbd89b4b968109201

RANDOM SEED= 627002234

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node76.alineos.net 2.6.9-34.ELsmp #1 SMP Thu Mar 9 06:23:23 GMT 2006 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.219
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	: 6006.18
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		: 3000.219
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	: 5999.41
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055888 kB
MemFree:       1129392 kB
Buffers:         44016 kB
Cached:         785660 kB
SwapCached:       3460 kB
Active:         591856 kB
Inactive:       247920 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055888 kB
LowFree:       1129392 kB
SwapTotal:     4096564 kB
SwapFree:      4087076 kB
Dirty:            6168 kB
Writeback:           0 kB
Mapped:          15428 kB
Slab:            73140 kB
Committed_AS:   946456 kB
PageTables:       1424 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66645 MiB

End job on node76 on Mon Feb 19 05:06:30 UTC 2007