[[ODROID-N2]]

#contents

|SoC|Amlogic S922X|
|CPU|Arm Cortex A73 2.2Ghz Quad-core+Cortex A53 1.9GHz Dual-core|
|GPU|Mali G52|
|Memory|DDR4 4GB|
|Storage|64GB eMMC|

[[Arm]][[:Arm Cortex A53]][[:Arm Cortex A73]]

*スペック [#ca748874]
-CPU: Cortex-A73+A53
-kernel
 $ uname -a
 Linux odroid 4.9.230-89 #1 SMP PREEMPT Tue Jul 14 13:08:17 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
-OS
 $ lsb_release  -a
 No LSB modules are available.
 Distributor ID: Ubuntu
 Description:    Ubuntu 20.04 LTS
 Release:        20.04
 Codename:       focal
-cpuinfo
 $ 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        : 290c400001121a00000239314e315350
 Serial          : f48f513c-8aa4-4b9a-be39-001e064250c9
 Hardware        : Hardkernel ODROID-N2Plus
 Revision        : 0400
-lscpu
 $ lscpu
 Architecture:        aarch64
 CPU op-mode(s):      32-bit, 64-bit
 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:         2208.0000
 CPU min MHz:         500.0000
 BogoMIPS:            48.00
 Flags:               fp asimd evtstrm aes pmull sha1 sha2 crc32
-auxv
 $ LD_SHOW_AUXV=1 ls
 AT_SYSINFO_EHDR:      0x7fabbae000
 AT_HWCAP:             ff
 AT_PAGESZ:            4096
 AT_CLKTCK:            100
 AT_PHDR:              0x5565867040
 AT_PHENT:             56
 AT_PHNUM:             9
 AT_BASE:              0x7fabb7e000
 AT_FLAGS:             0x0
 AT_ENTRY:             0x556586c940
 AT_UID:               1000
 AT_EUID:              1000
 AT_GID:               1000
 AT_EGID:              1000
 AT_SECURE:            0
 AT_RANDOM:            0x7fef8276e8
 AT_EXECFN:            /bin/ls
 AT_PLATFORM:          aarch64
-cpufreq 1.9GHz
 $ cat /sys/bus/cpu/devices/cpu?/cpufreq/cpuinfo_max_freq
 1908000
 1908000
 2208000
 2208000
 2208000
 2208000
-gcc
 $ gcc --version
 gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0
 Copyright (C) 2019 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 3.16.3
 
 CMake suite maintained and supported by Kitware (kitware.com/cmake).
-ccache 初期状態では未インストール
 $ ccache --version
 ccache version 3.7.7
 
 Copyright (C) 2002-2007 Andrew Tridgell
 Copyright (C) 2009-2020 Joel Rosdahl
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
 Foundation; either version 3 of the License, or (at your option) any later
 version.
-clinfo
 -恒例の[ここ>https://forum.odroid.com/viewtopic.php?t=34020]を参考に
--恒例の[[ここ>https://forum.odroid.com/viewtopic.php?t=34020]]を参考に
 $ sudo apt install mali-fbdev
 $ sudo mkdir -p /etc/OpenCL/vendors/
 $ 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                             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
     Supported affinity domains                    (n/a)
   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                              3887648768 (3.621GiB)
   Error Correction support                        No
   Max memory allocation                           971912192 (926.9MiB)
   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                                (n/a)
   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
   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

*購入品 [#r3e0ec19]
-64GB eMMC
-ODROID-N2+ 4GB
--公式のeMMCに入ってきたのはN2(not N2+)用のイメージだったので、公式から配布されているOSイメージのうち、http://de.eu.odroid.in/ と http://odroid.in/ から配布されている、N2向け20.04のイメージをダウンロードする。
*セットアップ [#ucec071e]
-初期セットアップ
 $ sudo apt update 
 $ sudo apt full-upgrade
-パッケージインストール
 $ time sudo apt install git clinfo tmux ccache libgtk-3-dev openjdk-11-jre-headless vim mali-fbdev

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