Trace number 310503

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 0.073988 0.0748681

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S2099846342-04-SAT.cnf
MD5SUM23ea53255de4a3778ef34ac8baaa8ebc
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.056991
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.07	c try 1 flip j 48239
0.00/0.07	c A solution is found
0.00/0.07	s SATISFIABLE
0.00/0.07	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 -419 420 421 -422 -423 424 -425 -426 -427 -428 429 -430 431 -432 -433 434 -435 -436 437 -438 439 440 -441 442 443 -444 -445 -446 447 -448 449 450 -451 -452 453 454 -455 -456 457 -458 459 -460 -461 462 -463 464 465 -466 467 -468 469 470 471 -472 473 -474 475 -476 477 478 -479 480 481 482 483 -484 -485 486 -487 488 489 490 491 -492 -493 -494 495 496 497 -498 499 500 501 502 -503 -504 505 506 507 -508 509 510 -511 -512 513 514 -515 516 517 518 519 520 521 -522 -523 524 525 -526 -527 528 -529 -530 -531 532 -533 534 535 536 537 538 539 540 -541 542 -543 544 545 546 -547 -548 549 550 -551 -552 553 -554 555 -556 -557 -558 -559 -560 561 -562 -563 -564 -565 -566 567 568 569 -570 -571 572 -573 -574 -575 -576 -577 578 579 580 -581 -582 -583 584 -585 -586 587 588 589 -590 -591 592 -593 594 -595 596 597 598 599 -600 -601 -602 603 604 -605 606 -607 608 -609 -610 -611 612 613 614 615 -616 617 618 -619 -620 621 622 -623 624 -625 626 -627 -628 629 630 
0.00/0.07	v 0 
0.00/0.07	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/node38/watcher-310503-1172560152 -o ROOT/results/node38/solver-310503-1172560152 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310503-1172560152/Hybrid1 /tmp/evaluation/310503-1172560152/instance-310503-1172560152.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: 0.85 0.97 1.08 3/64 28913
/proc/meminfo: memFree=1870680/2055920 swapFree=4183692/4192956
[pid=28913] ppid=28911 vsize=244848 CPUtime=0
/proc/28913/stat : 28913 (Hybrid1) R 28911 28913 28181 0 -1 4194304 133 0 0 0 0 0 0 0 18 0 1 0 275971071 250724352 116 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134523474 0 0 4096 0 0 0 0 17 1 0 0
/proc/28913/statm: 61212 116 40 103 0 60716 0

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

Child status: 10
Real time (s): 0.0748681
CPU time (s): 0.073988
CPU user time (s): 0.070989
CPU system time (s): 0.002999
CPU usage (%): 98.8245
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.070989
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 223
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 0.002999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node38 on Tue Feb 27 07:09:12 UTC 2007

IDJOB= 310503
IDBENCH= 20289
IDSOLVER= 115
FILE ID= node38/310503-1172560152

PBS_JOBID= 3971865

Free space on /tmp= 66554 MiB

SOLVER NAME= Hybrid1 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S2099846342-04-SAT.cnf
COMMAND LINE= /tmp/evaluation/310503-1172560152/Hybrid1 /tmp/evaluation/310503-1172560152/instance-310503-1172560152.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node38/watcher-310503-1172560152 -o ROOT/results/node38/solver-310503-1172560152 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310503-1172560152/Hybrid1 /tmp/evaluation/310503-1172560152/instance-310503-1172560152.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  23ea53255de4a3778ef34ac8baaa8ebc

RANDOM SEED= 854113911

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node38.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 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		: 3000.233
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		: 3000.233
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:       1871088 kB
Buffers:         22068 kB
Cached:         115360 kB
SwapCached:       3468 kB
Active:          77056 kB
Inactive:        70260 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1871088 kB
SwapTotal:     4192956 kB
SwapFree:      4183692 kB
Dirty:            6300 kB
Writeback:           0 kB
Mapped:          15300 kB
Slab:            23488 kB
Committed_AS:   571552 kB
PageTables:       1468 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= 66554 MiB

End job on node38 on Tue Feb 27 07:09:13 UTC 2007