Trace number 41324

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 4.1LUNSAT 20.8398 20.8512

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-e226.opb
MD5SUMba85c504e75c36f184b41f40c4eddd0f
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 benchmark3.79042
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables8460
Total number of constraints216
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 constraints216
Minimum length of a constraint30
Maximum length of a constraint3210
Number of terms in the objective function 5160
Biggest coefficient in the objective function 17864
Number of bits for the biggest coefficient in the objective function 15
Sum of the numbers in the objective function 528383
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 262145
Number of bits of the biggest number in a constraint 19
Biggest sum of numbers in a constraint 528383
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 PBS v4 by Bashar Al-Rawi & Fadi Aloul
0.00	c Solving ROOT/tmp/node82/41324-1149325185/instance-41324-1149325185.opb ......
20.84	c done parsing opb.
20.84	s UNSATISFIABLE
20.84	c Total Run Time					19.799

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/node82/watcher-41324-1149325185 -o ROOT/results/node82/solver-41324-1149325185 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node82/41324-1149325185/instance-41324-1149325185.opb 136820984 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 1.11 1.05 1.01 2/68 30581
/proc/meminfo: memFree=1678136/2055892 swapFree=4087504/4096564
[pid=30581] ppid=30579 vsize=2196 CPUtime=0
/proc/30581/stat : 30581 (PBS4L) R 30579 30581 30535 0 -1 4194304 133 0 0 0 0 0 0 0 18 0 1 0 189707809 2248704 118 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 134599096 0 0 4096 0 0 0 0 17 1 0 0
/proc/30581/statm: 549 119 90 232 0 314 0

[startup+10.0022 s]
/proc/loadavg: 1.10 1.05 1.01 2/68 30581
/proc/meminfo: memFree=1672888/2055892 swapFree=4087504/4096564
[pid=30581] ppid=30579 vsize=7248 CPUtime=9.99
/proc/30581/stat : 30581 (PBS4L) R 30579 30581 30535 0 -1 4194304 1633 0 0 0 998 1 0 0 25 0 1 0 189707809 7421952 1411 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 134551629 0 0 4096 0 0 0 0 17 1 0 0
/proc/30581/statm: 1812 1411 105 232 0 1577 0
Current children cumulated CPU time (s) 9.99
Current children cumulated vsize (Kb) 7248

[startup+20.0081 s]
/proc/loadavg: 1.08 1.04 1.01 2/68 30581
/proc/meminfo: memFree=1672888/2055892 swapFree=4087504/4096564
[pid=30581] ppid=30579 vsize=7224 CPUtime=19.99
/proc/30581/stat : 30581 (PBS4L) R 30579 30581 30535 0 -1 4194304 1688 0 0 0 1998 1 0 0 25 0 1 0 189707809 7397376 1404 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 134551587 0 0 4096 0 0 0 0 17 1 0 0
/proc/30581/statm: 1806 1404 105 232 0 1571 0
Current children cumulated CPU time (s) 19.99
Current children cumulated vsize (Kb) 7224

Child status: 0
Real time (s): 20.8512
CPU time (s): 20.8398
CPU user time (s): 20.8208
CPU system time (s): 0.018997
CPU usage (%): 99.9456
Max. virtual memory (cumulated for all children) (Kb): 7248

Launcher Data (download as text)

Begin job on node82 on Sat Jun  3 08:59:45 UTC 2006


FILE ID= 41324-1149325185

PBS_JOBID= 309568

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-e226.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node82/41324-1149325185/instance-41324-1149325185.opb 136820984
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node82/watcher-41324-1149325185 -o ROOT/results/node82/solver-41324-1149325185 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node82/41324-1149325185/instance-41324-1149325185.opb 136820984

MD5SUM SOLVER= ab46593c31a6a47b9d9920387a00d332
MD5SUM BENCH=  ba85c504e75c36f184b41f40c4eddd0f

RANDOM SEED= 136820984


/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	: 6006.17
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	: 5999.43
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055892 kB
MemFree:       1678408 kB
Buffers:         11272 kB
Cached:         301644 kB
SwapCached:       2740 kB
Active:          65800 kB
Inactive:       255788 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055892 kB
LowFree:       1678408 kB
SwapTotal:     4096564 kB
SwapFree:      4087504 kB
Dirty:             164 kB
Writeback:           0 kB
Mapped:          14632 kB
Slab:            42276 kB
Committed_AS:   365480 kB
PageTables:       1472 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node82 on Sat Jun  3 09:00:06 UTC 2006