Trace number 2682760

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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/CT 0.1 fixedOPT3089 0.089985 0.089289

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/mps-v2-20-10/
MIPLIB/miplib/normalized-mps-v2-20-10-p0033.opb
MD5SUMbdb886a987b9ca760f19a56a745e3c06
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark3089
Best CPU time to get the best result obtained on this benchmark0.038993
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3089
Optimality of the best value was proved YES
Number of variables33
Total number of constraints15
Number of constraints which are clauses1
Number of constraints which are cardinality constraints (but not clauses)3
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint2
Maximum length of a constraint19
Number of terms in the objective function 33
Biggest coefficient in the objective function 517
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 7276
Number of bits of the sum of numbers in the objective function 13
Biggest number in a constraint 1656
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 7276
Number of bits of the biggest sum of numbers13
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 

0.00/0.00	c PB/CT 0.1.1 http://www.residual.se/pbct
0.00/0.00	c Based on OpenSMT/CT 20091015
0.00/0.00	c constraints 11/0 clauses 4/0 units 0
0.00/0.00	c vars 33
0.00/0.00	c objective 33 + 0
0.00/0.01	c 0.007998 3.49609 2 47
0.00/0.01	o 3338
0.00/0.01	c 0.010998 3.62891 24 85
0.00/0.01	o 3302
0.00/0.01	c 0.015997 3.62891 105 213
0.00/0.01	o 3089
0.06/0.08	c 0.073988 3.62891 75 1173
0.06/0.08	s OPTIMUM FOUND
0.06/0.08	v x1 -x2 -x3 -x4 -x5 -x6 x7 x8 -x9 x10 -x11 -x12 -x13 x14 -x15 -x16 -x17 -x18 x19 x20 -x21 x22 -x23 x24 x25 x26 x27 x28 x29 x30 -x31 -x32 -x33

Verifier Data 

OK	3089

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2682760-1277477858/watcher-2682760-1277477858 -o /tmp/evaluation-result-2682760-1277477858/solver-2682760-1277477858 -C 1800 -W 2000 -M 1800 HOME/pbct --model HOME/instance-2682760-1277477858.opb 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23988
/proc/meminfo: memFree=1825572/2059040 swapFree=4139492/4192956
[pid=23988] ppid=23986 vsize=3576 CPUtime=0
/proc/23988/stat : 23988 (pbct) R 23986 23988 23632 0 -1 4202496 606 0 0 0 0 0 0 0 20 0 1 0 123387325 3661824 526 1992294400 134512640 136421960 4291787232 18446744073709551615 135811817 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23988/statm: 894 526 203 467 0 425 0

[startup+0.0692239 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23988
/proc/meminfo: memFree=1825572/2059040 swapFree=4139492/4192956
[pid=23988] ppid=23986 vsize=3712 CPUtime=0.06
/proc/23988/stat : 23988 (pbct) R 23986 23988 23632 0 -1 4202496 665 0 0 0 5 1 0 0 20 0 1 0 123387325 3801088 582 1992294400 134512640 136421960 4291787232 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23988/statm: 928 582 236 467 0 459 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3712

Solver just ended. Dumping a history of the last processes samples

[startup+0.0692239 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23988
/proc/meminfo: memFree=1825572/2059040 swapFree=4139492/4192956
[pid=23988] ppid=23986 vsize=3712 CPUtime=0.06
/proc/23988/stat : 23988 (pbct) R 23986 23988 23632 0 -1 4202496 665 0 0 0 5 1 0 0 20 0 1 0 123387325 3801088 582 1992294400 134512640 136421960 4291787232 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23988/statm: 928 582 236 467 0 459 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3712

Child status: 0
Real time (s): 0.089289
CPU time (s): 0.089985
CPU user time (s): 0.074988
CPU system time (s): 0.014997
CPU usage (%): 100.78
Max. virtual memory (cumulated for all children) (KiB): 3712

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.074988
system time used= 0.014997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 670
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= 1
involuntary context switches= 1

runsolver used 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node013 at 2010-06-25 16:57:38
IDJOB=2682760
IDBENCH=1863
IDSOLVER=1192
FILE ID=node013/2682760-1277477858
PBS_JOBID= 11190523
Free space on /tmp= 62404 MiB

SOLVER NAME= PB/CT 0.1 fixed
BENCH NAME= PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-p0033.opb
COMMAND LINE= HOME/pbct --model BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2682760-1277477858/watcher-2682760-1277477858 -o /tmp/evaluation-result-2682760-1277477858/solver-2682760-1277477858 -C 1800 -W 2000 -M 1800  HOME/pbct --model HOME/instance-2682760-1277477858.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= bdb886a987b9ca760f19a56a745e3c06
RANDOM SEED=1799177200

node013.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/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		: 3000.253
cache size	: 2048 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 6000.50
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		: 3000.253
cache size	: 2048 KB
physical id	: 3
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 6
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5599.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1826092 kB
Buffers:         44916 kB
Cached:          86508 kB
SwapCached:       5972 kB
Active:          69772 kB
Inactive:        75132 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1826092 kB
SwapTotal:     4192956 kB
SwapFree:      4139492 kB
Dirty:            1916 kB
Writeback:           0 kB
AnonPages:       12124 kB
Mapped:          11880 kB
Slab:            65992 kB
PageTables:       4148 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   181964 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    264948 kB
VmallocChunk: 34359471699 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 62400 MiB
End job on node013 at 2010-06-25 16:57:38