Trace number 1630885

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 NameAnswerCPU timeWall clock time
iPAWS 2009-03-22SAT 0.246962 0.246775

General information on the benchmark

NameRANDOM/LARGE/3SAT/UNKNOWN/2000/
unif-k3-r4.2-v2000-c8400-S1075551507-050.cnf
MD5SUMe6c4aa9150c7e5a44a3dd14ff53afc9f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.210967
Satisfiable
(Un)Satisfiability was proved
Number of variables2000
Number of clauses8400
Sum of the clauses size25200
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 38400
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data

0.19/0.24	s SATISFIABLE
0.19/0.24	v 1 2 -3 4 -5 6 7 -8 9 10 11 12 -13 14 -15 16 17 18 -19 20 21 -22 23 -24 -25 26 27 28 29 30 -31 -32 33 34 -35 36 -37 38 39 -40 41 -42 -43 -44 45 46 47 -48 49 50 -51 52 53 54 55 -56 57 58 -59 -60 -61 62 -63 -64 65 -66 67 68 -69 -70 71 72 -73 -74 75 76 77 78 -79 -80 -81 -82 -83 84 85 -86 -87 -88 -89 90 91 -92 -93 94 -95 -96 -97 98 -99 -100 101 -102 -103 104 105 106 -107 -108 -109 -110 -111 -112 113 114 115 -116 -117 118 119 -120 121 122 -123 124 125 126 -127 128 -129 -130 131 -132 -133 -134 135 -136 -137 138 139 -140 -141 -142 -143 144 -145 -146 147 -148 149 150 -151 152 -153 154 -155 -156 -157 -158 159 -160 -161 162 -163 164 -165 166 -167 168 -169 170 -171 172 -173 -174 -175 -176 177 178 179 180 181 -182 -183 -184 -185 -186 -187 188 -189 -190 191 192 -193 -194 195 196 -197 198 -199 -200 201 202 -203 204 205 -206 -207 208 -209 -210 211 212 -213 214 -215 216 217 218 -219 -220 221 -222 223 224 -225 -226 -227 228 229 -230 231 -232 233 -234 235 -236 237 238 -239 -240 -241 242 -243 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-1831 -1832 -1833 -1834 -1835 -1836 -1837 1838 1839 1840 1841 1842 -1843 -1844 1845 1846 1847 -1848 -1849 1850 1851 -1852 -1853 1854 1855 -1856 1857 -1858 1859 -1860 -1861 1862 -1863 -1864 1865 1866 -1867 1868 1869 1870 -1871 -1872 1873 -1874 1875 1876 -1877 -1878 -1879 -1880 -1881 -1882 -1883 -1884 1885 1886 1887 -1888 -1889 -1890 -1891 -1892 1893 -1894 -1895 1896 1897 -1898 1899 -1900 -1901 -1902 -1903 -1904 1905 -1906 1907 -1908 1909 -1910 1911 1912 1913 1914 1915 1916 1917 -1918 1919 -1920 -1921 1922 -1923 1924 -1925 1926 1927 1928 1929 1930 1931 -1932 -1933 -1934 -1935 -1936 1937 1938 -1939 -1940 -1941 -1942 -1943 1944 -1945 1946 -1947 1948 -1949 -1950 -1951 -1952 -1953 -1954 -1955 -1956 1957 -1958 1959 1960 1961 -1962 -1963 -1964 1965 1966 -1967 -1968 -1969 -1970 -1971 -1972 -1973 -1974 1975 1976 1977 1978 -1979 1980 1981 1982 -1983 -1984 -1985 1986 -1987 -1988 -1989 1990 1991 1992 -1993 -1994 1995 -1996 -1997 1998 1999 -2000 0
0.19/0.24	c input file instance-1630885-1240047405.cnf, flips 122192

Verifier Data

OK

Watcher Data

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1630885-1240047405/watcher-1630885-1240047405 -o /tmp/evaluation-result-1630885-1240047405/solver-1630885-1240047405 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1630885-1240047405.cnf 1204850452 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.99 3/65 19348
/proc/meminfo: memFree=1060072/2055920 swapFree=4192956/4192956
[pid=19348] ppid=19346 vsize=335916 CPUtime=0
/proc/19348/stat : 19348 (iPAWS) R 19346 19348 19086 0 -1 4194304 486 0 0 0 0 0 0 0 20 0 1 0 32769786 343977984 470 1992294400 134512640 135114423 4294956224 18446744073709551615 134533972 0 0 4096 0 0 0 0 17 1 0 0
/proc/19348/statm: 83979 470 54 146 0 83831 0

[startup+0.0234369 s]
/proc/loadavg: 0.99 0.97 0.99 3/65 19348
/proc/meminfo: memFree=1060072/2055920 swapFree=4192956/4192956
[pid=19348] ppid=19346 vsize=335916 CPUtime=0.01
/proc/19348/stat : 19348 (iPAWS) R 19346 19348 19086 0 -1 4194304 1061 0 0 0 1 0 0 0 20 0 1 0 32769786 343977984 1045 1992294400 134512640 135114423 4294956224 18446744073709551615 134550942 0 0 4096 0 0 0 0 17 1 0 0
/proc/19348/statm: 83979 1045 57 146 0 83831 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 335916

[startup+0.102451 s]
/proc/loadavg: 0.99 0.97 0.99 3/65 19348
/proc/meminfo: memFree=1060072/2055920 swapFree=4192956/4192956
[pid=19348] ppid=19346 vsize=335916 CPUtime=0.09
/proc/19348/stat : 19348 (iPAWS) R 19346 19348 19086 0 -1 4194304 1062 0 0 0 9 0 0 0 20 0 1 0 32769786 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134546146 0 0 4096 0 0 0 0 17 1 0 0
/proc/19348/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

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

[startup+0.201471 s]
/proc/loadavg: 0.99 0.97 0.99 3/65 19348
/proc/meminfo: memFree=1060072/2055920 swapFree=4192956/4192956
[pid=19348] ppid=19346 vsize=335916 CPUtime=0.19
/proc/19348/stat : 19348 (iPAWS) R 19346 19348 19086 0 -1 4194304 1062 0 0 0 19 0 0 0 21 0 1 0 32769786 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134546146 0 0 4096 0 0 0 0 17 1 0 0
/proc/19348/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 0.246775
CPU time (s): 0.246962
CPU user time (s): 0.241963
CPU system time (s): 0.004999
CPU usage (%): 100.076
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.241963
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1070
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= 2
involuntary context switches= 0

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data

Begin job on node82 at 2009-04-18 11:36:45
IDJOB=1630885
IDBENCH=70291
IDSOLVER=588
FILE ID=node82/1630885-1240047405
PBS_JOBID= 9157493
Free space on /tmp= 66204 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/LARGE/3SAT/UNKNOWN/2000/unif-k3-r4.2-v2000-c8400-S1075551507-050.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1630885-1240047405/watcher-1630885-1240047405 -o /tmp/evaluation-result-1630885-1240047405/solver-1630885-1240047405 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1630885-1240047405.cnf 1204850452

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= e6c4aa9150c7e5a44a3dd14ff53afc9f
RANDOM SEED=1204850452

node82.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.259
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		: 3000.259
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1060552 kB
Buffers:         81720 kB
Cached:         819280 kB
SwapCached:          0 kB
Active:         290524 kB
Inactive:       625056 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1060552 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            1068 kB
Writeback:           0 kB
Mapped:          24316 kB
Slab:            65800 kB
Committed_AS:   177212 kB
PageTables:       1388 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66204 MiB
End job on node82 at 2009-04-18 11:36:45