Trace number 232880

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
buggy_2_5 2007-01-08UNSAT 0.182972 0.200634

General information on the benchmark

Nametaillard/
os-taillard-4/os-taillard-4-95-8.xml
MD5SUM1710571c9fbceaa3ebf9e7e0cbee2df2
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.015997
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables16
Number of constraints48
Maximum constraint arity2
Maximum domain size238
Number of constraints which are defined in extension0
Number of constraints which are defined in intension48
Global constraints used (with number of constraints)

Solver Data (download as text)

c 
c 
c 
c solution file
c 
c 

UNSAT

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node52/watcher-232880-1168324153 -o ROOT/results/node52/solver-232880-1168324153 -C 1800 -M 900 /tmp/evaluation/232880-1168324153/solver /tmp/evaluation/232880-1168324153/unknown 1800 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Current StackSize limit: 10240 KiB

/proc/loadavg: 0.29 1.02 1.49 5/70 31408
/proc/meminfo: memFree=1466416/2055920 swapFree=4192812/4192956
[pid=31407] ppid=31404 vsize=5352 CPUtime=0
/proc/31407/stat : 31407 (solver) S 31404 31407 30464 0 -1 4194304 295 26 0 0 0 0 0 0 19 0 1 0 180814155 5480448 232 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 273653752644 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/31407/statm: 1338 232 194 169 0 49 0
[pid=31410] ppid=31407 vsize=1332 CPUtime=0
/proc/31410/stat : 31410 (grep) R 31407 31407 30464 0 -1 4194304 59 0 0 0 0 0 0 0 21 0 1 0 180814155 1363968 35 18446744073709551615 4194304 4274172 548682069552 18446744073709551615 273651135881 0 0 4096 0 0 0 0 17 1 0 0
/proc/31410/statm: 897 38 28 19 0 5 0

[startup+0.107468 s]
/proc/loadavg: 0.29 1.02 1.49 5/70 31408
/proc/meminfo: memFree=1466416/2055920 swapFree=4192812/4192956
[pid=31407] ppid=31404 vsize=5352 CPUtime=0.07
/proc/31407/stat : 31407 (solver) S 31404 31407 30464 0 -1 4194304 396 2686 0 0 0 0 3 4 16 0 1 0 180814155 5480448 242 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 273653752644 0 65536 4100 65538 18446744071563356171 0 0 17 0 0 0
/proc/31407/statm: 1338 242 203 169 0 49 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 5352

Child status: 0
Real time (s): 0.200634
CPU time (s): 0.182972
CPU user time (s): 0.123981
CPU system time (s): 0.058991
CPU usage (%): 91.1969
Max. virtual memory (cumulated for all children) (KiB): 5352

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.123981
system time used= 0.058991
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3385
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= 75
involuntary context switches= 28

runsolver used 0.002999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node52 on Tue Jan  9 06:29:16 UTC 2007


IDJOB= 232880
IDBENCH= 6561
FILE ID= node52/232880-1168324153

PBS_JOBID= 3502929

Free space on /tmp= 66545 MiB

BENCH NAME= HOME/pub/bench/CPAI06/taillard/os-taillard-4/os-taillard-4-95-8.xml
COMMAND LINE= /tmp/evaluation/232880-1168324153/solver /tmp/evaluation/232880-1168324153/unknown 1800
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node52/watcher-232880-1168324153 -o ROOT/results/node52/solver-232880-1168324153 -C 1800 -M 900  /tmp/evaluation/232880-1168324153/solver /tmp/evaluation/232880-1168324153/unknown 1800

META MD5SUM SOLVER= 6c84d9851726bfff2e2bc2bb5530c705
MD5SUM BENCH=  1710571c9fbceaa3ebf9e7e0cbee2df2

RANDOM SEED= 27805348

TIME LIMIT= 1800 seconds

MEMORY LIMIT= 900 MiB


/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		: 3000.232
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		: 3000.232
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:       1467232 kB
Buffers:         75320 kB
Cached:         432164 kB
SwapCached:          0 kB
Active:         222932 kB
Inactive:       304672 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1467232 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:           14152 kB
Writeback:           0 kB
Mapped:          30268 kB
Slab:            46736 kB
Committed_AS:  4258272 kB
PageTables:       1704 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= 66546 MiB



End job on node52 on Tue Jan  9 06:29:19 UTC 2007