Task 229807
| Name | 06494987_061_2 |
| Workunit | 149530 |
| Created | 28 Feb 2018, 8:37:35 UTC |
| Sent | 28 Feb 2018, 8:37:52 UTC |
| Report deadline | 28 Feb 2018, 16:37:52 UTC |
| Received | 28 Feb 2018, 18:33:33 UTC |
| Server state | Over |
| Outcome | Success |
| Client state | Done |
| Exit status | 0 (0x00000000) |
| Computer ID | 186 |
| Run time | 2 hours 15 min 50 sec |
| CPU time | 2 hours 16 min 21 sec |
| Validate state | Valid |
| Credit | 18.62 |
| Device peak FLOPS | 4.34 GFLOPS |
| Application version | boinc2docker v1.11 (vbox64_mt) x86_64-pc-linux-gnu |
Stderr output
<core_client_version>7.2.42</core_client_version>
<![CDATA[
<stderr_txt>
2018-02-28 17:17:11 (22191): vboxwrapper (7.7.26197): starting
2018-02-28 17:17:11 (22191): Feature: Checkpoint interval offset (168 seconds)
2018-02-28 17:17:11 (22191): Detected: VirtualBox VboxManage Interface (Version: 5.1.30)
2018-02-28 17:17:11 (22191): Detected: Minimum checkpoint interval (600.000000 seconds)
2018-02-28 17:17:11 (22191): Create VM. (boinc_34af31627ad264de, slot#4)
2018-02-28 17:17:11 (22191): Updating drive controller type and model for desired configuration.
2018-02-28 17:17:13 (22191): Setting Memory Size for VM. (3072MB)
2018-02-28 17:17:13 (22191): Setting CPU Count for VM. (1)
2018-02-28 17:17:13 (22191): Setting Chipset Options for VM.
2018-02-28 17:17:13 (22191): Setting Boot Options for VM.
2018-02-28 17:17:14 (22191): Setting Network Configuration for NAT.
2018-02-28 17:17:14 (22191): Enabling VM Network Access.
2018-02-28 17:17:14 (22191): Disabling USB Support for VM.
2018-02-28 17:17:14 (22191): Disabling COM Port Support for VM.
2018-02-28 17:17:14 (22191): Disabling LPT Port Support for VM.
2018-02-28 17:17:14 (22191): Disabling Audio Support for VM.
2018-02-28 17:17:15 (22191): Disabling Clipboard Support for VM.
2018-02-28 17:17:15 (22191): Disabling Drag and Drop Support for VM.
2018-02-28 17:17:15 (22191): Adding storage controller(s) to VM.
2018-02-28 17:17:15 (22191): Adding virtual ISO 9660 disk drive to VM. (vm_isocontext.iso)
2018-02-28 17:17:15 (22191): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB)
2018-02-28 17:17:15 (22191): Enabling shared directory for VM.
2018-02-28 17:17:16 (22191): Starting VM. (boinc_34af31627ad264de, slot#4)
2018-02-28 17:17:17 (22191): Successfully started VM. (PID = '22802')
2018-02-28 17:17:17 (22191): Reporting VM Process ID to BOINC.
2018-02-28 17:17:17 (22191): Guest Log: BIOS: VirtualBox 5.1.30
2018-02-28 17:17:17 (22191): VM state change detected. (old = 'poweroff', new = 'running')
2018-02-28 17:17:17 (22191): Preference change detected
2018-02-28 17:17:17 (22191): Setting CPU throttle for VM. (100%)
2018-02-28 17:17:20 (22191): Setting checkpoint interval to 36000 seconds. (Higher value of (Preference: 36000 seconds) or (Vbox_job.xml: 600 seconds))
2018-02-28 17:17:20 (22191): Guest Log: BIOS: Boot : bseqnr=1, bootseq=0032
2018-02-28 17:17:20 (22191): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=80
2018-02-28 17:17:20 (22191): Guest Log: BIOS: Boot from Hard Disk 0 failed
2018-02-28 17:17:20 (22191): Guest Log: BIOS: Boot : bseqnr=2, bootseq=0003
2018-02-28 17:17:20 (22191): Guest Log: BIOS: Booting from CD-ROM...
2018-02-28 17:17:20 (22191): Guest Log: BIOS: KBD: unsupported int 16h function 03
2018-02-28 17:17:20 (22191): Guest Log: BIOS: AX=0305 BX=0000 CX=0000 DX=0000
2018-02-28 17:17:28 (22191): Guest Log: net.ipv4.ip_forward = 1
2018-02-28 17:17:28 (22191): Guest Log: sysctl: cannot stat /proc/sys/net/ipv6/conf/all/forwarding: No such file or directory
2018-02-28 17:17:28 (22191): Guest Log: sysctl: setting key "cannot stat %s": No such file or directory
2018-02-28 17:17:28 (22191): Guest Log: sysctl: "cannot stat %s" is an unknown key
2018-02-28 17:17:28 (22191): Guest Log: sysctl: setting key "cannot stat %s": No such file or directory
2018-02-28 17:17:28 (22191): Guest Log: Segmentation fault
2018-02-28 17:17:28 (22191): Guest Log: vgdrvHeartbeatInit: Setting up heartbeat to trigger every 2000 milliseconds
2018-02-28 17:17:28 (22191): Guest Log: vboxguest: misc device minor 56, IRQ 20, I/O port d020, MMIO at 00000000f0400000 (size 0x400000)
2018-02-28 17:17:28 (22191): Guest Log: automount ...
2018-02-28 17:17:28 (22191): Guest Log: Is the disk unpartitioned?, test for the 'boot2docker format-me' string
2018-02-28 17:17:28 (22191): Guest Log: automount over.
2018-02-28 17:17:29 (22191): Guest Log: [1;32mSetting hostname to [1;35mboot2docker[0;39m [1;32mDone.[0;39m
2018-02-28 17:17:29 (22191): Guest Log: Wed Feb 28 17:17:26 UTC 2018 dhcp -------------------------------
2018-02-28 17:17:34 (22191): Guest Log: udevadm settle - timeout of 5 seconds reached, the event queue contains:
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0700:00 (1054)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00 (1279)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXCPU:00 (1280)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXPWRBN:00 (1281)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 (1282)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input0/event0 (1283)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSLPBN:00 (1284)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 (1285)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSLPBN:00/input/input1/event1 (1286)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00 (1287)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00 (1288)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/ACPI0003:00 (1289)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/ACPI0003:00/power_supply/AC (1290)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:00 (1291)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:00/device:01 (1292)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:00/input/input6 (1293)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:00/input/input6/event5 (1294)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0400:00 (1295)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0400:01 (1296)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0501:00 (1297)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0501:01 (1298)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0501:02 (1299)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0501:03 (1300)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0C02:00 (1301)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0C0A:00 (1302)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP8390:00 (1303)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00 (1304)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/APP0001:00 (1305)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0000:00 (1306)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0100:00 (1307)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0103:00 (1308)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0200:00 (1309)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0303:00 (1310)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0700:00 (1311)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0B00:00 (1312)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:00/PNP0F03:00 (1313)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:02 (1314)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0F:00 (1315)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0F:01 (1316)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0F:02 (1317)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0F:03 (1318)
2018-02-28 17:17:34 (22191): Guest Log: /sys/devices/LNXSYSTM:00/LNXSYBUS:01 (1319)
2018-02-28 17:17:35 (22191): Guest Log: Wed Feb 28 17:17:32 UTC 2018 dhcp -------------------------------
2018-02-28 17:17:35 (22191): Guest Log: VBoxService 5.0.16 r105871 (verbosity: 0) linux.amd64 (Mar 4 2016 17:38:55) release log
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.000118 main Log opened 2018-02-28T17:17:32.612638000Z
2018-02-28 17:17:35 (22191): Guest Log: VBoxService 5.0.16 r105871 (verbosity: 0) linux.amd64 (Mar 4 2016 17:38:55) release log
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.000118 main Log opened 2018-02-28T17:17:32.612638000Z
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.002221 main OS Product: Linux
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.002221 main OS Product: Linux
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.002984 main OS Release: 4.1.19-boot2docker
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003052 main OS Version: #1 SMP Sun Apr 17 19:40:54 UTC 2016
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003103 main Executable: /sbin/VBoxService
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003105 main Process ID: 822
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003105 main Package type: LINUX_64BITS_GENERIC
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.002984 main OS Release: 4.1.19-boot2docker
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003052 main OS Version: #1 SMP Sun Apr 17 19:40:54 UTC 2016
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003103 main Executable: /sbin/VBoxService
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.005995 main 5.0.16 r105871 started. Verbose level = 0
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003105 main Process ID: 822
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.003105 main Package type: LINUX_64BITS_GENERIC
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.005995 main 5.0.16 r105871 started. Verbose level = 0
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.014950 vminfo rtldrNativeLoad: dlopen('libdbus-1.so.3', RTLD_NOW | RTLD_LOCAL) failed: libdbus-1.so.3: cannot open shared object file: No such file or directory
2018-02-28 17:17:35 (22191): Guest Log: 00:00:00.015041 vminfo Error: Unable to connect to system D-Bus (1/3): D-Bus not installed
2018-02-28 17:17:35 (22191): Guest Log: Mounting BOINC shared/...
2018-02-28 17:17:35 (22191): Guest Log: -------------------
2018-02-28 17:17:35 (22191): Guest Log: Wed Feb 28 16:17:34 UTC 2018
2018-02-28 17:17:40 (22191): Guest Log: 00:00:05.016247 vminfo Error: Unable to connect to system D-Bus (2/3): D-Bus not installed
2018-02-28 17:17:40 (22191): Guest Log: Wed Feb 28 16:17:39 UTC 2018
2018-02-28 17:17:40 (22191): Guest Log: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
2018-02-28 17:17:40 (22191): Guest Log: link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2018-02-28 17:17:40 (22191): Guest Log: inet 127.0.0.1/8 scope host lo
2018-02-28 17:17:40 (22191): Guest Log: valid_lft forever preferred_lft forever
2018-02-28 17:17:40 (22191): Guest Log: inet6 ::1/128 scope host
2018-02-28 17:17:40 (22191): Guest Log: valid_lft forever preferred_lft forever
2018-02-28 17:17:40 (22191): Guest Log: 2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default
2018-02-28 17:17:40 (22191): Guest Log: link/ether 7a:d3:e9:8c:1e:54 brd ff:ff:ff:ff:ff:ff
2018-02-28 17:17:40 (22191): Guest Log: 3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
2018-02-28 17:17:40 (22191): Guest Log: link/ether 08:00:27:10:46:fc brd ff:ff:ff:ff:ff:ff
2018-02-28 17:17:40 (22191): Guest Log: inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
2018-02-28 17:17:40 (22191): Guest Log: valid_lft forever preferred_lft forever
2018-02-28 17:17:40 (22191): Guest Log: inet6 fe80::a00:27ff:fe10:46fc/64 scope link
2018-02-28 17:17:40 (22191): Guest Log: valid_lft forever preferred_lft forever
2018-02-28 17:17:40 (22191): Guest Log: -------------------
2018-02-28 17:17:40 (22191): Guest Log: Linking /etc/docker to /var/lib/boot2docker for persistence
2018-02-28 17:17:40 (22191): Guest Log: Waiting for Docker daemon to start...
2018-02-28 17:17:41 (22191): Guest Log: REPOSITORY TAG IMAGE ID CREATED SIZE
2018-02-28 17:17:41 (22191): Guest Log: Running boinc_app...
2018-02-28 17:17:41 (22191): Guest Log: Importing Docker image from BOINC...
2018-02-28 17:17:41 (22191): Guest Log: Filesystem Size Used Available Use% Mounted on
2018-02-28 17:17:41 (22191): Guest Log: tmpfs 2.6G 164.2M 2.5G 6% /
2018-02-28 17:17:41 (22191): Guest Log: tmpfs 1.5G 0 1.5G 0% /dev/shm
2018-02-28 17:17:41 (22191): Guest Log: cgroup 1.5G 0 1.5G 0% /sys/fs/cgroup
2018-02-28 17:17:41 (22191): Guest Log: shared 251.9G 28.3G 223.5G 11% /root/shared
2018-02-28 17:17:41 (22191): Guest Log: tmpfs 2.6G 164.2M 2.5G 6% /var/lib/docker/aufs
2018-02-28 17:17:45 (22191): Guest Log: 00:00:10.018098 vminfo Error: Unable to connect to system D-Bus (3/3): D-Bus not installed
2018-02-28 17:17:48 (22191): Guest Log: doing docker load...
2018-02-28 17:18:00 (22191): Guest Log: Filesystem Size Used Available Use% Mounted on
2018-02-28 17:18:00 (22191): Guest Log: tmpfs 2.6G 721.5M 1.9G 27% /
2018-02-28 17:18:00 (22191): Guest Log: tmpfs 1.5G 0 1.5G 0% /dev/shm
2018-02-28 17:18:00 (22191): Guest Log: cgroup 1.5G 0 1.5G 0% /sys/fs/cgroup
2018-02-28 17:18:00 (22191): Guest Log: shared 251.9G 28.1G 223.7G 11% /root/shared
2018-02-28 17:18:00 (22191): Guest Log: tmpfs 2.6G 721.5M 1.9G 27% /var/lib/docker/aufs
2018-02-28 17:18:00 (22191): Guest Log: total used free shared buff/cache available
2018-02-28 17:18:00 (22191): Guest Log: Mem: 3007 45 2199 721 762 2201
2018-02-28 17:18:00 (22191): Guest Log: Swap: 700 0 700
2018-02-28 17:18:00 (22191): Guest Log: Building apps directory...
2018-02-28 17:18:00 (22191): Guest Log: tar xf /root/shared/appsSource/rappture_grid_tag_1.7.2-6645-2077.tar --directory /root/shared/apps/share64/debian7/rappture/grid
2018-02-28 17:18:03 (22191): Guest Log: tar xf /root/shared/appsSource/rappture_grid_tag_1.7.2-6645-2077_links.tar --directory /root/shared/apps/share64/debian7/rappture/grid
2018-02-28 17:18:04 (22191): Guest Log: mv /root/shared/appsSource/rappture /root/shared/apps/share64/debian7/environ.d
2018-02-28 17:19:09 (22191): Guest Log: Prerun diagnostics...
2018-02-28 17:19:09 (22191): Guest Log: REPOSITORY TAG IMAGE ID CREATED SIZE
2018-02-28 17:19:09 (22191): Guest Log: nanohub_apps_share64_octave 5 a3c939485731 12 weeks ago 547 MB
2018-02-28 17:19:09 (22191): Guest Log: CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2018-02-28 17:19:09 (22191): Guest Log: 557.4M /var/lib/docker
2018-02-28 17:19:09 (22191): Guest Log: total used free shared buff/cache available
2018-02-28 17:19:09 (22191): Guest Log: Mem: 3007 49 2191 721 766 2196
2018-02-28 17:19:09 (22191): Guest Log: Swap: 700 0 700
2018-02-28 17:19:09 (22191): Guest Log: Filesystem Size Used Available Use% Mounted on
2018-02-28 17:19:09 (22191): Guest Log: tmpfs 2.6G 721.5M 1.9G 27% /
2018-02-28 17:19:09 (22191): Guest Log: tmpfs 1.5G 0 1.5G 0% /dev/shm
2018-02-28 17:19:09 (22191): Guest Log: cgroup 1.5G 0 1.5G 0% /sys/fs/cgroup
2018-02-28 17:19:09 (22191): Guest Log: shared 251.9G 29.0G 222.8G 12% /root/shared
2018-02-28 17:19:09 (22191): Guest Log: tmpfs 2.6G 721.5M 1.9G 27% /var/lib/docker/aufs
2018-02-28 17:19:09 (22191): Guest Log: Running...
2018-02-28 17:19:09 (22191): Guest Log: 06494987_061.boinc
2018-02-28 17:19:09 (22191): Guest Log: 06494987_061.sh
2018-02-28 18:56:18 (22191): Status Report: Elapsed Time: '6000.594229'
2018-02-28 18:56:18 (22191): Status Report: CPU Time: '5967.130000'
2018-02-28 19:33:06 (22191): Guest Log: boinc_app exited (0)
2018-02-28 19:33:06 (22191): Guest Log: Saving results...
2018-02-28 19:33:06 (22191): Guest Log: 06494987_061_output.tar.gz
2018-02-28 19:33:06 (22191): VM Completion File Detected.
2018-02-28 19:33:06 (22191): Powering off VM.
2018-02-28 19:33:07 (22191): Successfully stopped VM.
2018-02-28 19:33:07 (22191): Deregistering VM. (boinc_34af31627ad264de, slot#4)
2018-02-28 19:33:07 (22191): Removing network bandwidth throttle group from VM.
2018-02-28 19:33:07 (22191): Removing storage controller(s) from VM.
2018-02-28 19:33:07 (22191): Removing VM from VirtualBox.
2018-02-28 19:33:07 (22191): Removing virtual ISO 9660 disk from VirtualBox.
19:33:12 (22191): called boinc_finish(0)
</stderr_txt>
]]>
©2025 COPYRIGHT 2017-2018 NCN