Trace number 45386

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
PB-smodels 1.31OPT164393 1.9707 2.04212

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/
MIPLIB/miplib/normalized-reduced-mps-v2-20-10-pipex.opb
MD5SUMed5b5ce3af44efa2d285a6206b4187fd
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark164393
Best CPU time to get the best result obtained on this benchmark0.118981
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 164393
Optimality of the best value was proved YES
Number of variables48
Total number of constraints25
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)16
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint3
Maximum length of a constraint16
Number of terms in the objective function 48
Biggest coefficient in the objective function 22495
Number of bits for the biggest coefficient in the objective function 15
Sum of the numbers in the objective function 524314
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 22495
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 524314
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

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 Running pbsmodels-v1.31
0.03	o 170647
0.04	o 169857
0.05	o 168391
0.36	o 168047
0.48	o 167942
0.67	o 165458
0.79	o 164419
0.81	o 164393
2.03	s OPTIMUM FOUND
2.03	v x1 x2 x11 x13 x23 x24 x28 x30 x31 x32 x35 x36 x37 x38 x41 x42 -x3 -x4 -x5 -x6 -x7 -x8 -x9 -x10 -x12 -x14 -x15 -x16 -x17 -x18 -x19 -x20
2.03	v -x21 -x22 -x25 -x26 -x27 -x29 -x33 -x34 -x39 -x40 -x43 -x44 -x45 -x46 -x47 -x48

Verifier Data (download as text)

OK	164393

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

runsolver version 3.0.1 (c) roussel@cril.univ-artois.fr

Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
command line: runsolver --timestamp -w ROOT/results/node83/watcher-45386-1149647283 -o ROOT/results/node83/solver-45386-1149647283 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user4/pbsmodels-v1.31/runpbsmodels ROOT/tmp/node83/45386-1149647283/instance-45386-1149647283.opb 207591614 ROOT/tmp/node83/45386-1149647283 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 1.00 1.00 1.00 2/67 2586
/proc/meminfo: memFree=1529440/2055888 swapFree=4085408/4096564
[pid=2586] ppid=2584 vsize=5368 CPUtime=0
/proc/2586/stat : 2586 (runpbsmodels) S 2584 2586 2540 0 -1 4194304 285 0 0 0 0 0 0 0 19 0 1 0 230367676 5496832 233 18446744073709551615 4194304 4889804 548682069184 18446744073709551615 242290846276 0 65536 4100 65538 18446744071563358023 0 0 17 1 0 0
/proc/2586/statm: 1342 233 194 169 0 52 0
[pid=2587] ppid=2586 vsize=8544 CPUtime=0
/proc/2587/stat : 2587 (pbsmodels-v1.31) R 2586 2586 2540 0 -1 4194304 74 0 0 0 0 0 0 0 20 0 1 0 230367676 8749056 56 18446744073709551615 4194304 4206940 548682069024 18446744073709551615 242288227273 0 0 4096 0 0 0 0 17 1 0 0
/proc/2587/statm: 2409 57 42 3 0 55 0

Child status: 0
Real time (s): 2.04212
CPU time (s): 1.9707
CPU user time (s): 1.9557
CPU system time (s): 0.014997
CPU usage (%): 96.5028
Max. virtual memory (cumulated for all children) (Kb): 0
The end

Launcher Data (download as text)

Begin job on node83 on Wed Jun  7 02:28:03 UTC 2006


FILE ID= 45386-1149647283

PBS_JOBID= 323885

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/miplib/normalized-reduced-mps-v2-20-10-pipex.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user4/pbsmodels-v1.31/runpbsmodels ROOT/tmp/node83/45386-1149647283/instance-45386-1149647283.opb 207591614  ROOT/tmp/node83/45386-1149647283
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node83/watcher-45386-1149647283 -o ROOT/results/node83/solver-45386-1149647283 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user4/pbsmodels-v1.31/runpbsmodels ROOT/tmp/node83/45386-1149647283/instance-45386-1149647283.opb 207591614  ROOT/tmp/node83/45386-1149647283

MD5SUM SOLVER= 95562bc622ddb1f976359072aec5ad24 7fcd858753252b26b88f3383e979819a c732bc4c3aeda9195daa74a308a1f78e b7e54d975d35ab28450b6de5c14d303e f7da3270b2cd5190fa0cd9af9b854ca4
MD5SUM BENCH=  ed5b5ce3af44efa2d285a6206b4187fd

RANDOM SEED= 207591614


/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		: 3000.265
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	: 6006.16
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		: 3000.265
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	: 5999.44
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055888 kB
MemFree:       1529712 kB
Buffers:         35432 kB
Cached:         420456 kB
SwapCached:       2364 kB
Active:          86232 kB
Inactive:       378356 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055888 kB
LowFree:       1529712 kB
SwapTotal:     4096564 kB
SwapFree:      4085408 kB
Dirty:             164 kB
Writeback:           0 kB
Mapped:          16888 kB
Slab:            48288 kB
Committed_AS:   482360 kB
PageTables:       1284 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node83 on Wed Jun  7 02:28:05 UTC 2006