BPI-M2 ZERO : Tensorflow Lite 2.1 - 빌드

출처

• Installing the Latest Python 3.7 on Ubuntu 16.04 | 18.04 | Website for Students
• 리눅스 CPU 정보 확인하기
• permissions - How to change zram size? - Ask Ubuntu
• ./tensorflow/lite/tools/make/download_dependencies.sh: line 59: 1: Usage: download_and_extract URL DIR · Issue #36199 · tensorflow/tensorflow

리눅스 정보 확인

HW 정보 확인

$ sudo apt-get install lshw
$ sudo lshw
bananapim2zero            
    description: Computer
    width: 32 bits
  *-core
       description: Motherboard
       physical id: 0
     *-memory
          description: System memory
          physical id: 0
          size: 495MiB
     *-cpu:0
          physical id: 1
          bus info: cpu@0
          size: 1008MHz
          capacity: 1008MHz
          capabilities: cpufreq
     *-cpu:1
          physical id: 2
          bus info: cpu@1
          size: 1008MHz
          capacity: 1008MHz
          capabilities: cpufreq
     *-cpu:2
          physical id: 3
          bus info: cpu@2
          size: 1008MHz
          capacity: 1008MHz
          capabilities: cpufreq
     *-cpu:3
          physical id: 4
          bus info: cpu@3
          size: 1008MHz
          capacity: 1008MHz
          capabilities: swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt cpufreq
  *-usbhost:0
       product: SW USB2.0 'Open' Host Controller (OHCI) Driver
       vendor: Linux 3.4.113-sun8i ohci_hcd
       physical id: 1
       bus info: usb@2
       logical name: usb2
       version: 3.04
       capabilities: usb-1.10
       configuration: driver=hub slots=1 speed=12Mbit/s
  *-usbhost:1
       product: SW USB2.0 'Enhanced' Host Controller (EHCI) Driver
       vendor: Linux 3.4.113-sun8i ehci_hcd
       physical id: 2
       bus info: usb@1
       logical name: usb1
       version: 3.04
       capabilities: usb-2.00
       configuration: driver=hub slots=1 speed=480Mbit/s
     *-usb
          description: USB hub
          product: USB 2.0 Hub
          vendor: Terminus Technology Inc.
          physical id: 1
          bus info: usb@1:1
          version: 1.11
          capabilities: usb-2.00
          configuration: driver=hub maxpower=100mA slots=4 speed=480Mbit/s
        *-usb:0
             description: Keyboard
             product: Smart Control
             vendor: HL 0000 00 00 00 01
             physical id: 1
             bus info: usb@1:1.1
             version: 1.00
             capabilities: usb-1.10
             configuration: driver=usbhid maxpower=200mA speed=12Mbit/s
        *-usb:1
             description: Generic USB device
             product: USB 2.0 10/100M Ethernet Adaptor
             vendor: Kontron (Industrial Computer Source / ICS Advent)
             physical id: 2
             bus info: usb@1:1.2
             version: 1.01
             capabilities: usb-1.10
             configuration: driver=qf9700 maxpower=120mA speed=12Mbit/s
  *-network:0
       description: Wireless interface
       physical id: 3
       logical name: wlan0
       serial: cc:b8:a8:aa:b7:b4
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=wl driverversion=0 multicast=yes wireless=IEEE 802.11
  *-network:1
       description: Ethernet interface
       physical id: 4
       logical name: eth0
       serial: 7a:24:59:9a:a1:b8
       size: 10Mbit/s
       capacity: 100Mbit/s
       capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sunxi_geth driverversion=SUNXI Gbgit driver V1.1 duplex=half link=no multicast=yes port=MII speed=10Mbit/s
  *-network:2
       description: Ethernet interface
       physical id: 5
       logical name: enx00e04c534458
       serial: 00:e0:4c:53:44:58
       size: 100Mbit/s
       capacity: 100Mbit/s
       capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=qf9700 driverversion=22-Aug-2005 duplex=full firmware=QF9700 USB Ethernet ip=192.168.0.3 link=yes multicast=yes port=MII speed=100Mbit/s

instruction set architecture (ISA)

$ uname -i
armv7l

swap 사이즈 설정

현재 swap 사이즈 확인

$ free -h
              total        used        free      shared  buff/cache   available
Mem:           495M        129M        136M         19M        228M        324M
Swap:          247M          0B        247M
$ sudo swapon -s
Filename                                Type            Size    Used    Priority
/dev/zram0                              partition       63376   0       5
/dev/zram1                              partition       63376   0       5
/dev/zram2                              partition       63376   0       5
/dev/zram3                              partition       63376   0       5
$ sudo swapoff /dev/zram0
$ sudo swapoff /dev/zram1
$ sudo swapoff /dev/zram2
$ sudo swapoff /dev/zram3
$ sudo zramctl --reset /dev/zram0
$ sudo zramctl --reset /dev/zram1
$ sudo zramctl --reset /dev/zram2
$ sudo zramctl --reset /dev/zram3
$ sudo zramctl --find --size 512M
/dev/zram0
$ sudo zramctl --find --size 512M
/dev/zram1
$ sudo zramctl --find --size 512M
/dev/zram2
$ sudo zramctl --find --size 512M
/dev/zram3
$ sudo mkswap /dev/zram0
Setting up swapspace version 1, size = 512 MiB (536866816 bytes)
no label, UUID=db53f0c1-5ca4-41cb-acae-ba8c61e17827
$ sudo mkswap /dev/zram1
Setting up swapspace version 1, size = 512 MiB (536866816 bytes)
no label, UUID=f2b75b1c-77e6-485d-adfa-df2f3a7abc01
$ sudo mkswap /dev/zram2
Setting up swapspace version 1, size = 512 MiB (536866816 bytes)
no label, UUID=9612064a-508e-4c7f-8f7f-07d1a5cbe79d
$ sudo mkswap /dev/zram3
Setting up swapspace version 1, size = 512 MiB (536866816 bytes)
no label, UUID=cc344046-c130-4f79-9d33-fc0882cf3f6a
$ sudo swapon /dev/zram0
$ sudo swapon /dev/zram1
$ sudo swapon /dev/zram2
$ sudo swapon /dev/zram3
$ free -h
              total        used        free      shared  buff/cache   available
Mem:           495M        134M        132M         19M        228M        319M
Swap:          2.0G          0B        2.0G
$ sudo swapon -s
Filename                                Type            Size    Used    Priority
/dev/zram0                              partition       524284  0       -1
/dev/zram1                              partition       524284  0       -2
/dev/zram2                              partition       524284  0       -3
/dev/zram3                              partition       524284  0       -4

Bazel 설치

출처 : トマト農家のロボット創り　Robot creation by tomato farmer: Build Bazel(0.29.0) on Raspberry Pi 4

JDK 설치

$ sudo apt install openjdk-8-jdk

Bazel 다운로드 및 설치

$ mkdir bazel
$ cd bazel
$ wget https://github.com/bazelbuild/bazel/releases/download/0.29.1/bazel-0.29.1-dist.zip
$ unzip bazel-0.29.1-dist.zip
$ sudo env EXTRA_BAZEL_ARGS="--host_javabase=@local_jdk//:jdk" VERBOSE=yes BAZEL_JAVAC_OPTS="-J-Xms384m -J-Xmx1024m" bash ./compile.sh
$ sudo cp output/bazel /usr/local/bin/bazel

Tensorflow Lite 빌드

Tensorflow 소스 다운로드

$ wget https://github.com/tensorflow/tensorflow/archive/v2.1.0.tar.gz
$ tar -zxvf v2.1.0.tar.gz 
$ cd tensorflow-2.1.0/

Tensorflow Lite 빌드

$ tensorflow/lite/tools/make/download_dependencies.sh
tensorflow/lite/tools/make/download_dependencies.sh: line 59: 1: Usage: download_and_extract URL DIR
pi@bananapim2zero:~/tensorflow-2.1.0$ 
$ sed -i "/^EIGEN_URL=/c\EIGEN_URL=\"\$(grep -o 'https://storage.googleapis.com/mirror.tensorflow.org/gitlab.com/libeigen/eigen/.*tar.gz' \"\${BZL_FILE_PATH}\")\"" tensorflow/lite/tools/make/download_dependencies.sh
$ tensorflow/lite/tools/make/download_dependencies.sh

컴파일 옵션 변경

BPI-M2 ZERO 리소스 부족으로 컴파일 오류가 발생하므로 컴파일 옵션 변경

$ vi tensorflow/lite/tools/make/build_lib.sh

-j 옵션값을 4에서 2로 변경

make -j 2 BUILD_WITH_NNAPI=false -C "${TENSORFLOW_DIR}" -f tensorflow/lite/tools/make/Makefile

Tensorflow Lite 빌드

$ sudo tensorflow/lite/tools/make/build_lib.sh 
+ set -e
+++ dirname tensorflow/lite/tools/make/build_lib.sh
++ cd tensorflow/lite/tools/make
++ pwd
+ SCRIPT_DIR=/home/pi/tensorflow-2.1.0/tensorflow/lite/tools/make
+ TENSORFLOW_DIR=/home/pi/tensorflow-2.1.0/tensorflow/lite/tools/make/../../../..
+ make -j 4 BUILD_WITH_NNAPI=false -C /home/pi/tensorflow-2.1.0/tensorflow/lite/tools/make/../../../.. -f tensorflow/lite/tools/make/Makefile
make: Entering directory '/home/pi/tensorflow-2.1.0'

Python 패키지 빌드, 설치

$ sudo apt install swig
$ tensorflow/lite/tools/pip_package/build_pip_package.sh
$ pip3 install /tmp/tflite_pip/python3/dist/tflite_runtime-2.1.0-cp37-cp37m-linux_armv7l.whl
Defaulting to user installation because normal site-packages is not writeable
Processing /tmp/tflite_pip/python3/dist/tflite_runtime-2.1.0-cp37-cp37m-linux_armv7l.whl
Requirement already satisfied: numpy>=1.12.1 in /home/pi/.local/lib/python3.7/site-packages (from tflite-runtime==2.1.0) (1.18.2)
Installing collected packages: tflite-runtime
Successfully installed tflite-runtime-2.1.0