Trace number 1630887

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 0.767882 0.768746

General information on the benchmark

NameRANDOM/LARGE/3SAT/UNKNOWN/2000/
unif-k3-r4.2-v2000-c8400-S779309989-069.cnf
MD5SUMf790d28bf27d167da954318ad1a18e9d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.690894
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

0.69/0.76	s SATISFIABLE
0.69/0.76	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 -244 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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
0.69/0.76	c input file instance-1630887-1240047406.cnf, flips 385585

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-1630887-1240047406/watcher-1630887-1240047406 -o /tmp/evaluation-result-1630887-1240047406/solver-1630887-1240047406 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1630887-1240047406.cnf 29739264 

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: 1.00 1.00 1.00 3/64 21211
/proc/meminfo: memFree=1076528/2055920 swapFree=4192956/4192956
[pid=21211] ppid=21209 vsize=335916 CPUtime=0
/proc/21211/stat : 21211 (iPAWS) R 21209 21211 20991 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 32773357 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134533181 0 0 4096 0 0 0 0 17 1 0 0
/proc/21211/statm: 83979 469 54 146 0 83831 0

[startup+0.0635201 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 21211
/proc/meminfo: memFree=1076528/2055920 swapFree=4192956/4192956
[pid=21211] ppid=21209 vsize=335916 CPUtime=0.05
/proc/21211/stat : 21211 (iPAWS) R 21209 21211 20991 0 -1 4194304 1062 0 0 0 5 0 0 0 18 0 1 0 32773357 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134546603 0 0 4096 0 0 0 0 17 1 0 0
/proc/21211/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 335916

[startup+0.101523 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 21211
/proc/meminfo: memFree=1076528/2055920 swapFree=4192956/4192956
[pid=21211] ppid=21209 vsize=335916 CPUtime=0.09
/proc/21211/stat : 21211 (iPAWS) R 21209 21211 20991 0 -1 4194304 1062 0 0 0 9 0 0 0 18 0 1 0 32773357 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134546146 0 0 4096 0 0 0 0 17 1 0 0
/proc/21211/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301551 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 21211
/proc/meminfo: memFree=1076528/2055920 swapFree=4192956/4192956
[pid=21211] ppid=21209 vsize=335916 CPUtime=0.29
/proc/21211/stat : 21211 (iPAWS) R 21209 21211 20991 0 -1 4194304 1062 0 0 0 29 0 0 0 19 0 1 0 32773357 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134550070 0 0 4096 0 0 0 0 17 1 0 0
/proc/21211/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

[startup+0.70161 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 21211
/proc/meminfo: memFree=1076528/2055920 swapFree=4192956/4192956
[pid=21211] ppid=21209 vsize=335916 CPUtime=0.69
/proc/21211/stat : 21211 (iPAWS) R 21209 21211 20991 0 -1 4194304 1062 0 0 0 69 0 0 0 22 0 1 0 32773357 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134517390 0 0 4096 0 0 0 0 17 1 0 0
/proc/21211/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 335916

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

Child status: 0
Real time (s): 0.768746
CPU time (s): 0.767882
CPU user time (s): 0.764883
CPU system time (s): 0.002999
CPU usage (%): 99.8876
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.764883
system time used= 0.002999
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= 2

runsolver used 0.001999 second user time and 0.007998 second system time

The end

Launcher Data

Begin job on node30 at 2009-04-18 11:36:46
IDJOB=1630887
IDBENCH=70293
IDSOLVER=588
FILE ID=node30/1630887-1240047406
PBS_JOBID= 9157486
Free space on /tmp= 66276 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/LARGE/3SAT/UNKNOWN/2000/unif-k3-r4.2-v2000-c8400-S779309989-069.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1630887-1240047406/watcher-1630887-1240047406 -o /tmp/evaluation-result-1630887-1240047406/solver-1630887-1240047406 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1630887-1240047406.cnf 29739264

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

MD5SUM BENCH= f790d28bf27d167da954318ad1a18e9d
RANDOM SEED=29739264

node30.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		: 3000.265
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	: 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		: 3000.265
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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1076944 kB
Buffers:         85176 kB
Cached:         796784 kB
SwapCached:          0 kB
Active:         327208 kB
Inactive:       569244 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1076944 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             908 kB
Writeback:           0 kB
Mapped:          24228 kB
Slab:            68548 kB
Committed_AS:   165592 kB
PageTables:       1356 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66276 MiB
End job on node30 at 2009-04-18 11:36:47