Trace number 232943

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_s 2007-01-08SAT 0.524919 0.533586

General information on the benchmark

Nametaillard/os-taillard-4/
os-taillard-4-100-3.xml
MD5SUMbba2cc8aaa4798b32650cb48748bdd9c
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.017996
SatisfiableYES
(Un)Satisfiability was provedYES
Number of variables16
Number of constraints48
Maximum constraint arity2
Maximum domain size232
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 

SAT
215 75 131 0 112 75 210 0 60 122 0 222 0 207 133 60

Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node51/watcher-232943-1168324230 -o ROOT/results/node51/solver-232943-1168324230 -C 1800 -M 900 /tmp/evaluation/232943-1168324230/solver2 /tmp/evaluation/232943-1168324230/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: 0.17 0.56 1.00 3/70 4923
/proc/meminfo: memFree=1193272/2055920 swapFree=4192812/4192956
[pid=4922] ppid=4918 vsize=5352 CPUtime=0
/proc/4922/stat : 4922 (solver2) S 4918 4922 4207 0 -1 4194304 295 0 0 0 0 0 0 0 18 0 1 0 180822149 5480448 232 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 235371291460 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/4922/statm: 1338 232 194 169 0 49 0
[pid=4924] ppid=4922 vsize=0 CPUtime=0
/proc/4924/stat : 4924 (solver2) D 4922 4922 4207 0 -1 4194372 26 0 0 0 0 0 0 0 15 0 1 0 180822149 0 0 18446744073709551615 0 0 0 0 0 0 2147483391 4096 65538 18446744072099781622 0 0 17 0 0 0
/proc/4924/statm: 0 0 0 0 0 0 0
[pid=4925] ppid=4922 vsize=200 CPUtime=0
/proc/4925/stat : 4925 (grep) R 4922 4922 4207 0 -1 4194304 48 0 0 0 0 0 0 0 21 0 1 0 180822149 204800 24 18446744073709551615 4194304 4274172 548682069552 18446744073709551615 235368674697 0 0 4096 0 0 0 0 17 1 0 0
/proc/4925/statm: 50 24 17 19 0 4 0

[startup+0.102347 s]
/proc/loadavg: 0.17 0.56 1.00 3/70 4923
/proc/meminfo: memFree=1193272/2055920 swapFree=4192812/4192956
[pid=4922] ppid=4918 vsize=5352 CPUtime=0.07
/proc/4922/stat : 4922 (solver2) S 4918 4922 4207 0 -1 4194304 397 2688 0 0 0 0 3 4 15 0 1 0 180822149 5480448 242 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 235371291460 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/4922/statm: 1338 242 203 169 0 49 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 5352

[startup+0.510413 s]
/proc/loadavg: 0.17 0.56 1.00 3/70 4923
/proc/meminfo: memFree=1193272/2055920 swapFree=4192812/4192956
[pid=4922] ppid=4918 vsize=5352 CPUtime=0.07
/proc/4922/stat : 4922 (solver2) S 4918 4922 4207 0 -1 4194304 397 2688 0 0 0 0 3 4 15 0 1 0 180822149 5480448 242 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 235371291460 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/4922/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): 0.533586
CPU time (s): 0.524919
CPU user time (s): 0.462929
CPU system time (s): 0.06199
CPU usage (%): 98.3757
Max. virtual memory (cumulated for all children) (KiB): 5352

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.462929
system time used= 0.06199
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3391
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= 78
involuntary context switches= 28

runsolver used 0.002999 s user time and 0.004999 s system time

The end

Launcher Data (download as text)

Begin job on node51 on Tue Jan  9 06:30:35 UTC 2007


IDJOB= 232943
IDBENCH= 6567
FILE ID= node51/232943-1168324230

PBS_JOBID= 3502934

Free space on /tmp= 66552 MiB

BENCH NAME= HOME/pub/bench/CPAI06/taillard/os-taillard-4/os-taillard-4-100-3.xml
COMMAND LINE= /tmp/evaluation/232943-1168324230/solver2 /tmp/evaluation/232943-1168324230/unknown 1800
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node51/watcher-232943-1168324230 -o ROOT/results/node51/solver-232943-1168324230 -C 1800 -M 900  /tmp/evaluation/232943-1168324230/solver2 /tmp/evaluation/232943-1168324230/unknown 1800

META MD5SUM SOLVER= 2182e29fee250f6e45b9a85a6429fa3a
MD5SUM BENCH=  bba2cc8aaa4798b32650cb48748bdd9c

RANDOM SEED= 973158110

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		: 3000.277
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		: 3000.277
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:       1194088 kB
Buffers:         59568 kB
Cached:         725084 kB
SwapCached:          0 kB
Active:         245660 kB
Inactive:       559068 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1194088 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:           12512 kB
Writeback:           0 kB
Mapped:          30228 kB
Slab:            42880 kB
Committed_AS:  4052804 kB
PageTables:       1616 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= 66552 MiB



End job on node51 on Tue Jan  9 06:30:38 UTC 2007