Trace number 310423

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
FH 2007-02-08SAT 0.024995 0.0266319

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S2094973797-12-SAT.cnf
MD5SUM834f68dca74e3c1d51bff5d400695c42
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 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)

0.00/0.02	c try 1 flip j 11451
0.00/0.02	c A solution is found
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 -397 398 399 400 401 402 403 404 405 406 -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 
0.00/0.02	v 0 
0.00/0.02	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/node33/watcher-310423-1172559488 -o ROOT/results/node33/solver-310423-1172559488 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310423-1172559488/FH /tmp/evaluation/310423-1172559488/instance-310423-1172559488.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: 0.91 0.98 0.99 3/64 1940
/proc/meminfo: memFree=1868400/2055920 swapFree=4181596/4192956
[pid=1940] ppid=1938 vsize=244848 CPUtime=0
/proc/1940/stat : 1940 (FH) R 1938 1940 1726 0 -1 4194304 129 0 0 0 0 0 0 0 18 0 1 0 180984209 250724352 112 18446744073709551615 134512640 134936988 4294956720 18446744073709551615 134523517 0 0 4096 0 0 0 0 17 1 0 0
/proc/1940/statm: 61212 112 36 103 0 60716 0

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

Child status: 10
Real time (s): 0.0266319
CPU time (s): 0.024995
CPU user time (s): 0.023996
CPU system time (s): 0.000999
CPU usage (%): 93.8537
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.023996
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 219
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= 1

runsolver used 0.000999 second user time and 0.007998 second system time

The end

Launcher Data (download as text)

Begin job on node33 on Tue Feb 27 06:58:08 UTC 2007

IDJOB= 310423
IDBENCH= 20286
IDSOLVER= 117
FILE ID= node33/310423-1172559488

PBS_JOBID= 3971875

Free space on /tmp= 66551 MiB

SOLVER NAME= FH 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S2094973797-12-SAT.cnf
COMMAND LINE= /tmp/evaluation/310423-1172559488/FH /tmp/evaluation/310423-1172559488/instance-310423-1172559488.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node33/watcher-310423-1172559488 -o ROOT/results/node33/solver-310423-1172559488 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310423-1172559488/FH /tmp/evaluation/310423-1172559488/instance-310423-1172559488.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  834f68dca74e3c1d51bff5d400695c42

RANDOM SEED= 637861484

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node33.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		: 3000.259
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		: 3000.259
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:       1868968 kB
Buffers:         21288 kB
Cached:         116500 kB
SwapCached:       5556 kB
Active:          63572 kB
Inactive:        85904 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1868968 kB
SwapTotal:     4192956 kB
SwapFree:      4181596 kB
Dirty:            6216 kB
Writeback:           0 kB
Mapped:          15324 kB
Slab:            23556 kB
Committed_AS:   261492 kB
PageTables:       1408 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= 66551 MiB

End job on node33 on Tue Feb 27 06:58:10 UTC 2007