[[FrontPage]]
#contents
https://www.hardkernel.com/shop/odroid-n2-with-4gbyte-ram/
|SoC|Amlogic S922X|
|CPU|Arm Cortex A73 1.8Ghz Quad-core+Cortex A53 1.9GHz Dual-core|
|GPU|Mali G52|
|Memory|DDR4 4GB|
|Storage|32GB eMMC|
[[Arm]][[:Arm Cortex A53]][[:Arm Cortex A73]]
*スペック [#t917ed10]
-CPU: Cortex-A73+A53
-kernel
$ uname -a
Linux odroid 4.9.162-22 #1 SMP PREEMPT Mon Mar 25 12:17:29 -03 2019 aarch64 aarch64 aarch64 GNU/Linux
odroid@odroid:~$ gcc --version
gcc (Ubuntu/Linaro 7.3.0-27ubuntu1~18.04) 7.3.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-OS
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
-cpuinfo
odroid@odroid:~$ cat /proc/cpuinfo
processor : 0
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 1
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 2
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd09
CPU revision : 2
processor : 3
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd09
CPU revision : 2
processor : 4
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd09
CPU revision : 2
processor : 5
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd09
CPU revision : 2
CPU info : 290a4000011c0d000006383448564d50
Serial : 8bc59af9-66d8-4ec0-8caf-001e064229f9
Hardware : Hardkernel ODROID-N2
Revision : 0400
-lscpu
$ lscpu
Architecture: aarch64
Byte Order: Little Endian
CPU(s): 6
On-line CPU(s) list: 0-5
Thread(s) per core: 1
Core(s) per socket: 3
Socket(s): 2
Vendor ID: ARM
Model: 4
Model name: Cortex-A53
Stepping: r0p4
CPU max MHz: 1896.0000
CPU min MHz: 100.0000
BogoMIPS: 48.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32
-auxv
$ xxd -e -g8 /proc/self/auxv
00000000: 0000000000000021 0000007f79aa9000 !..........y....
00000010: 0000000000000010 00000000000000ff ................
00000020: 0000000000000006 0000000000001000 ................
00000030: 0000000000000011 0000000000000064 ........d.......
00000040: 0000000000000003 0000005591afe040 ........@...U...
00000050: 0000000000000004 0000000000000038 ........8.......
00000060: 0000000000000005 0000000000000008 ................
00000070: 0000000000000007 0000007f79a7e000 ...........y....
00000080: 0000000000000008 0000000000000000 ................
00000090: 0000000000000009 0000005591b001a4 ............U...
000000a0: 000000000000000b 00000000000003e8 ................
000000b0: 000000000000000c 00000000000003e8 ................
000000c0: 000000000000000d 00000000000003e8 ................
000000d0: 000000000000000e 00000000000003e8 ................
000000e0: 0000000000000017 0000000000000000 ................
000000f0: 0000000000000019 0000007fc664a3a8 ..........d.....
00000100: 000000000000001f 0000007fc664afeb ..........d.....
00000110: 000000000000000f 0000007fc664a3b8 ..........d.....
00000120: 0000000000000000 0000000000000000 ................
|0000000000000021|0000007f79aa9000|
|0000000000000010|00000000000000ff|
|0000000000000006|0000000000001000|
|0000000000000011|0000000000000064|
|0000000000000003|0000005591afe040|
|0000000000000004|0000000000000038|
|0000000000000005|0000000000000008|
|0000000000000007|0000007f79a7e000|
|0000000000000008|0000000000000000|
|0000000000000009|0000005591b001a4|
|000000000000000b|00000000000003e8|
|000000000000000c|00000000000003e8|
|000000000000000d|00000000000003e8|
|000000000000000e|00000000000003e8|
|0000000000000017|0000000000000000|
|0000000000000019|0000007fc664a3a8|
|000000000000001f|0000007fc664afeb|
|000000000000000f|0000007fc664a3b8|
|0000000000000000|0000000000000000|
-cpufreq 1.9GHz
$ cat /sys/bus/cpu/devices/cpu?/cpufreq/cpuinfo_max_freq
1896000
1896000
1800000
1800000
1800000
1800000
-gcc
$ gcc --version
gcc (Ubuntu/Linaro 7.3.0-27ubuntu1~18.04) 7.3.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-cmake
$ cmake --version
cmake version 3.10.2
CMake suite maintained and supported by Kitware (kitware.com/cmake).
-clinfo
$ clinfo
Number of platforms 0
--(´・ω・｀)しょんぼり
--[[ここ>https://forum.odroid.com/viewtopic.php?t=34020]]に詳細が書いてあった。
$ sudo mkdir -p /etc/OpenCL/vendors
$ sudo touch /etc/OpenCL/vendors/mali.icd
$ sudo vim /etc/OpenCL/vendors/mali.icd
$ sudo cat /etc/OpenCL/vendors/mali.icd
libOpenCL.so
$ cd /usr/lib/aarch64-linux-gnu/
$ sudo ln -s libMali.so libOpenCL.so
$ clinfo
Number of platforms 1
Platform Name ARM Platform
Platform Vendor ARM
Platform Version OpenCL 2.0 git.c8adbf9.122c9daed32dbba4b3056f41a2f23c58
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store
cl_khr_3d_image_writes cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp16 cl_khr_icd cl_khr_egl_image cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_subgroups cl_khr_create_command_queue cl_arm_core_id
cl_arm_printf cl_arm_thread_limit_hint cl_arm_non_uniform_work_group_size cl_arm_import_memory cl_arm_shared_virtual_memory
Platform Extensions function suffix ARM
Platform Name ARM Platform
Number of devices 1
Device Name Mali-G52
Device Vendor ARM
Device Vendor ID 0x72120000
Device Version OpenCL 2.0 git.c8adbf9.122c9daed32dbba4b3056f41a2f23c58
Driver Version 2.0
Device OpenCL C Version OpenCL C 2.0 git.c8adbf9.122c9daed32dbba4b3056f41a2f23c58
Device Type GPU
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 2
Max clock frequency 750MHz
Device Partition (core)
Max number of sub-devices 0
Supported partition types None
Max work item dimensions 3
Max work item sizes 384x384x384
Max work group size 384
Preferred work group size multiple 8
Preferred / native vector sizes
char 16 / 4
short 8 / 2
int 4 / 1
long 2 / 1
half 8 / 2 (cl_khr_fp16)
float 4 / 1
double 0 / 0 (n/a)
Half-precision Floating-point support (cl_khr_fp16)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support (n/a)
Address bits 64, Little-Endian
Global memory size 3887435776 (3.62GiB)
Error Correction support No
Max memory allocation 971858944 (926.8MiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing No
Fine-grained system sharing No
Atomics No
Shared Virtual Memory (SVM) capabilities (ARM)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing No
Fine-grained system sharing No
Atomics No
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 0 bytes
Global 0 bytes
Local 0 bytes
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 0
Global Memory cache type Read/Write
Global Memory cache size 131072 (128KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 65536 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 32 bytes
Pitch alignment for 2D image buffers 64 pixels
Max 2D image size 65536x65536 pixels
Max 3D image size 65536x65536x65536 pixels
Max number of read image args 128
Max number of write image args 64
Max number of read/write image args 64
Max number of pipe args 16
Max active pipe reservations 1
Max pipe packet size 1024
Local memory type Global
Local memory size 32768 (32KiB)
Max number of constant args 8
Max constant buffer size 65536 (64KiB)
Max size of kernel argument 1024
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 2097152 (2MiB)
Max size 16777216 (16MiB)
Max queues on device 1
Max events on device 1024
Prefer user sync for interop No
Profiling timer resolution 1000ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Extensions cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store
cl_khr_3d_image_writes cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp16 cl_khr_icd cl_khr_egl_image cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_subgroups cl_khr_create_command_queue cl_arm_core_id
cl_arm_printf cl_arm_thread_limit_hint cl_arm_non_uniform_work_group_size cl_arm_import_memory cl_arm_shared_virtual_memory
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) ARM Platform
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [ARM]
clCreateContext(NULL, ...) [default] Success [ARM]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name ARM Platform
Device Name Mali-G52
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name ARM Platform
Device Name Mali-G52
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
Platform Name ARM Platform
Device Name Mali-G52
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1
-UART Debug console
--[[accessory:development:usb_uart_kit [ODROID Wiki]>https://wiki.odroid.com/accessory/development/usb_uart_kit]]¬e{ref-debug-uart:[[accessory:development:usb_uart_kit [ODROID Wiki]>https://wiki.odroid.com/accessory/development/usb_uart_kit]]};
--3.3V 115200 8N1
*購入品 [#l87e6e9c]
-32GB eMMC
-ODROID-N2 4GB
*初期設定 [#yc2ab60a]
-1回目の電源投入時はシステム設定のためにすぐに電源が切れる。規定の動作。
-電源再投入は、ボタンが無いので、電源プラグを抜いて再度差し込む
**パッケージ諸々のアップデート [#y6d166b9]
-Ubuntuなので、apt-getでアップデート可能
$ sudo apt update
$ sudo apt upgrade
-同梱のマニュアルによると、初回時にシステムを最新にするために以下のコマンドを実行するように書かれている
$ sudo apt update
$ sudo apt full-upgrade
$ sudo reboot
**諸々初期設定 [#vcdf87a8]
-必要なのはgit、ccache、vim など
$ time sudo apt install libgtk-3-dev openjdk-8-jre-headless git ccache clinfo vim
$ ssh-keygen -t ecdsa
$ ssh-keygen -f hoge
$ cat hoge.pub >> .ssh/authorized_keys
$ sudo timedatectl set-timezone Asia/Tokyo
$ git config --global user.name "Foo Bar"
$ git config --global user.email foo@bar.com
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
