Trace number 39901

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 NameAnswerObjective functionCPU timeWall clock time
bsolo 2006/05UNSAT 10.2684 10.2815

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/ftp.netlib.org/
lp/data/normalized-reduced-mps-v2-20-10-pilot87.opb
MD5SUMe59c2905e997a0635cce57f2d16b8705
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark7.59684
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables113861
Total number of constraints3583
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints3583
Minimum length of a constraint10
Maximum length of a constraint8647
Number of terms in the objective function 11587
Biggest coefficient in the objective function 12292
Number of bits for the biggest coefficient in the objective function 14
Sum of the numbers in the objective function 519074
Number of bits of the sum of numbers in the objective function 19
Biggest number in a constraint 262145
Number of bits of the biggest number in a constraint 19
Biggest sum of numbers in a constraint 531294
Number of bits of the biggest sum of numbers20
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data (download as text)

0.00	c Time Limit set via PBTIMEOUT to 1800
0.01	c INFO: OSL Context initialized.
10.09	c Initial problem consists of 113861 variables and 3812 constraints.
10.25	s UNSATISFIABLE
10.25	c Exit Code: 20
10.25	c Total time: 10.238 s

Verifier Data (download as text)

ERROR: no interpretation found !

Watcher Data (download as text)

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1830 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
runsolver version 3.0.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node92/watcher-39901-1149326617 -o ROOT/results/node92/solver-39901-1149326617 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node92/39901-1149326617/instance-39901-1149326617.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.85 0.94 0.95 2/67 579
/proc/meminfo: memFree=1832064/2055892 swapFree=4084904/4096564
[pid=579] ppid=577 vsize=4672 CPUtime=0
/proc/579/stat : 579 (bsolo) R 577 579 533 0 -1 0 155 0 0 0 0 0 0 0 18 0 1 0 198300649 4784128 136 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 9522072 0 0 4096 0 0 0 0 17 1 0 0
/proc/579/statm: 1168 137 106 55 0 46 0

[startup+10.0027 s]
/proc/loadavg: 0.87 0.94 0.95 2/67 579
/proc/meminfo: memFree=1690632/2055892 swapFree=4084904/4096564
[pid=579] ppid=577 vsize=149464 CPUtime=9.98
/proc/579/stat : 579 (bsolo) R 577 579 533 0 -1 0 187860 0 0 0 940 58 0 0 25 0 1 0 198300649 153051136 35627 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 134537441 0 0 4096 16384 0 0 0 17 1 0 0
/proc/579/statm: 37366 35627 278 55 0 36257 0
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 149464

Child status: 20
Real time (s): 10.2815
CPU time (s): 10.2684
CPU user time (s): 9.61154
CPU system time (s): 0.6569
CPU usage (%): 99.8733
Max. virtual memory (cumulated for all children) (Kb): 149464

Launcher Data (download as text)

Begin job on node92 on Sat Jun  3 09:23:38 UTC 2006


FILE ID= 39901-1149326617

PBS_JOBID= 309663

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/ftp.netlib.org/lp/data/normalized-reduced-mps-v2-20-10-pilot87.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node92/39901-1149326617/instance-39901-1149326617.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node92/watcher-39901-1149326617 -o ROOT/results/node92/solver-39901-1149326617 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node92/39901-1149326617/instance-39901-1149326617.opb

MD5SUM SOLVER= 05cada221eb1efaaae980ebc7509e7e8
MD5SUM BENCH=  e59c2905e997a0635cce57f2d16b8705

RANDOM SEED= 86906766


/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		: 3000.214
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	: 6006.19
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		: 3000.214
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	: 5999.42
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055892 kB
MemFree:       1832464 kB
Buffers:          2244 kB
Cached:         166040 kB
SwapCached:       2532 kB
Active:          62808 kB
Inactive:       113812 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055892 kB
LowFree:       1832464 kB
SwapTotal:     4096564 kB
SwapFree:      4084904 kB
Dirty:             292 kB
Writeback:           0 kB
Mapped:          15200 kB
Slab:            33600 kB
Committed_AS:   332876 kB
PageTables:       1256 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node92 on Sat Jun  3 09:23:48 UTC 2006