Trace number 41538

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
PBS 4.1LOPT34 0.783879 0.789574

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/mps-v2-20-10/
MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
MD5SUM5c5bb330d1cbd0e2ab066594a5d2a4de
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark34
Best CPU time to get the best result obtained on this benchmark0.082986
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 34
Optimality of the best value was proved YES
Number of variables27
Total number of constraints20
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 constraints20
Minimum length of a constraint18
Maximum length of a constraint26
Number of terms in the objective function 27
Biggest coefficient in the objective function 9
Number of bits for the biggest coefficient in the objective function 4
Sum of the numbers in the objective function 124
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 65
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 182
Number of bits of the biggest sum of numbers8
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data (download as text)

0.00	c PBS v4 by Bashar Al-Rawi & Fadi Aloul
0.00	c Solving ROOT/tmp/node65/41538-1149368759/instance-41538-1149368759.opb ......
0.01	c done parsing opb.
0.01	o 71
0.04	o 69
0.04	o 68
0.07	o 61
0.07	o 46
0.42	o 45
0.47	o 41
0.53	o 39
0.72	o 37
0.75	o 35
0.77	o 34
0.78	o 34
0.78	s OPTIMUM FOUND
0.78	c Total Run Time					0.780881
0.78	v -x1 -x10 -x11 -x12 -x13 -x14 x15 -x16 x17 -x18 -x19 -x2 x20 -x21 x22 -x23 -x24 -x25 -x26 x27 x3 -x4 x5 -x6 -x7 -x8 x9

Verifier Data (download as text)

OK	34

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/node65/watcher-41538-1149368759 -o ROOT/results/node65/solver-41538-1149368759 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node65/41538-1149368759/instance-41538-1149368759.opb 855075639 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.79 0.92 0.97 3/64 9199
/proc/meminfo: memFree=1759176/2055920 swapFree=4181844/4192956
[pid=9199] ppid=9197 vsize=1368 CPUtime=0
/proc/9199/stat : 9199 (PBS4L) D 9197 9199 9153 0 -1 4194304 111 0 0 0 0 0 0 0 19 0 1 0 202545190 1400832 95 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 135137645 0 2147483391 4096 0 18446744072099781622 0 0 17 1 0 0
/proc/9199/statm: 350 100 87 232 0 115 0

Child status: 0
Real time (s): 0.789574
CPU time (s): 0.783879
CPU user time (s): 0.769882
CPU system time (s): 0.013997
CPU usage (%): 99.2787
Max. virtual memory (cumulated for all children) (Kb): 0

Launcher Data (download as text)

Begin job on node65 on Sat Jun  3 21:05:59 UTC 2006


FILE ID= 41538-1149368759

PBS_JOBID= 312015

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node65/41538-1149368759/instance-41538-1149368759.opb 855075639
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node65/watcher-41538-1149368759 -o ROOT/results/node65/solver-41538-1149368759 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node65/41538-1149368759/instance-41538-1149368759.opb 855075639

MD5SUM SOLVER= ab46593c31a6a47b9d9920387a00d332
MD5SUM BENCH=  5c5bb330d1cbd0e2ab066594a5d2a4de

RANDOM SEED= 855075639


/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		: 3000.283
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		: 3000.283
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:       1759384 kB
Buffers:         21240 kB
Cached:         211672 kB
SwapCached:       2776 kB
Active:          57276 kB
Inactive:       184344 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1759384 kB
SwapTotal:     4192956 kB
SwapFree:      4181844 kB
Dirty:             292 kB
Writeback:           0 kB
Mapped:          14748 kB
Slab:            40920 kB
Committed_AS:   358096 kB
PageTables:       1480 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node65 on Sat Jun  3 21:05:59 UTC 2006