climateprediction.net home page
Task 21995625

Task 21995625

Name hadam4h_a0kx_209311_5_891_012049840_0
Workunit 12049840
Created 18 Jan 2021, 13:30:35 UTC
Sent 10 Feb 2021, 20:08:00 UTC
Report deadline 24 Jan 2022, 1:28:00 UTC
Received 18 Feb 2021, 19:53:26 UTC
Server state Over
Outcome Computation error
Client state Compute error
Exit status 193 (0x000000C1) EXIT_SIGNAL
Computer ID 1484825
Run time 5 hours 42 min 18 sec
CPU time 5 hours 30 min 12 sec
Validate state Invalid
Credit 0.00
Device peak FLOPS 3.89 GFLOPS
Application version UK Met Office HadAM4 at N216 resolution v8.52
i686-pc-linux-gnu
Peak working set size 1,356.84 MB
Peak swap size 1,378.35 MB
Peak disk usage 12.91 MB
Stderr
<core_client_version>7.16.6</core_client_version>
<![CDATA[
<message>
process exited with code 193 (0xc1, -63)</message>
<stderr_txt>
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
21:53:52 (7902): called boinc_finish(193)
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
21:53:53 (7902): called boinc_finish(193)
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f90b60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf7a81552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7b05d2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7b060ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7b0403b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f90b60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f90b49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7b10693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7b10892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7b17314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7b4b475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf7a68ee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f96b60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf7a87552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7b0bd2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7b0c0ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7b0a03b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f96b60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f96b49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7b16693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7b16892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7b1d314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7b51475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf7a6eee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f30b60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf7a21552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7aa5d2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7aa60ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7aa403b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f30b60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f30b49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7ab0693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7ab0892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7ab7314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7aeb475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf7a08ee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
21:39:34 (1870): called boinc_finish(193)
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f14b60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf7a05552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7a89d2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7a8a0ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7a8803b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f14b60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f14b49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7a94693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7a94892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7a9b314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7acf475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf79ecee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f6eb60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf7a5f552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7ae3d2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7ae40ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7ae203b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f6eb60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f6eb49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7aee693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7aee892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7af5314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7b29475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf7a46ee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (22 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f17b60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf7a08552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7a8cd2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7a8d0ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7a8b03b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f17b60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f17b49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7a97693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7a97892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7a9e314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7ad2475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804fca4]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503d7]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf79efee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7eeeb60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf79df552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7a63d2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7a640ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7a6203b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7eeeb60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7eeeb49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7a6e693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7a6e892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7a75314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7aa9475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf79c6ee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Suspended CPDN Monitor - Suspend request from BOINC...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
Signal 15 received: Software termination signal from kill 
Signal 15 received: Abnormal termination triggered by abort call
Signal 15 received, exiting...
SIGSEGV: segmentation violation
Stack trace (21 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f0db60]
/lib/i386-linux-gnu/libc.so.6(getenv+0xa2)[0xf79fe552]
/lib/i386-linux-gnu/libc.so.6(+0xbbd2d)[0xf7a82d2d]
/lib/i386-linux-gnu/libc.so.6(+0xbc0ee)[0xf7a830ee]
/lib/i386-linux-gnu/libc.so.6(localtime_r+0x1b)[0xf7a8103b]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d01b2]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d0900]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80d09f1]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f0db60]
linux-gate.so.1(__kernel_vsyscall+0x9)[0xf7f0db49]
/lib/i386-linux-gnu/libc.so.6(+0xc6693)[0xf7a8d693]
/lib/i386-linux-gnu/libc.so.6(clock_nanosleep+0x52)[0xf7a8d892]
/lib/i386-linux-gnu/libc.so.6(nanosleep+0x24)[0xf7a94314]
/lib/i386-linux-gnu/libc.so.6(usleep+0x45)[0xf7ac8475]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80e78a5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x80503e8]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051b13]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf79e5ee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...
Signal 3 received, exiting...
SIGSEGV: segmentation violation
19:53:08 (1836): called boinc_finish(193)
Stack trace (7 frames):
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu(boinc_catch_signal+0x67)[0x80d4cf7]
linux-gate.so.1(__kernel_sigreturn+0x0)[0xf7f1eb60]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804d0fe]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8050d88]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x8051d8b]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf79f6ee5]
../../projects/climateprediction.net/hadam4_8.52_i686-pc-linux-gnu[0x804cd21]

Exiting...

</stderr_txt>
]]>
No trickles!


©2024 cpdn.org