Failed to detect a default CUDA architecture或是CMAKE_CUDA_ARCHITECTURES must be non-empty if set

直接告訴CMake nvcc的位置，注意舊的build資料夾要先清掉
-DCMAKE_CUDA_COMPILER=/usr/local/cuda-11.7/bin/nvcc

https://www.cnblogs.com/metaz/p/16919028.html

VS code設定cmake的環境變數

在setting.json加入"cmake.environment": {"CUDA_VER":"11.7"}，說明書:https://github.com/microsoft/vscode-cmake-tools/blob/main/docs/cmake-presets.md#ignored-settings

CMake presets: https://dominikberner.ch/cmake-presets-best-practices/

CMake 系統環境變數設置

https://www.scivision.dev/cmake-environment-variable-scope/

libcuda.so.1 not found

使用find_package(CUDAToolkit)並且在target_link_libraries 加入CUDA::cuda_driver

CMake find_package() 用法

CMake有許多尋找套件的module，例如FindCUDAToolkit，下面連結條列各種find_package()能使用的module

https://cmake.org/cmake/help/latest/manual/cmake-modules.7.html#manual:cmake-modules(7)

服務無法啟動，Kafka Broker doesn’t find cluster id

移除meta.properties.

參考:https://stackoverflow.com/questions/59592518/kafka-broker-doesnt-find-cluster-id-and-creates-new-one-after-docker-restart

資源監視器btop

https://github.com/aristocratos/bpytop#installation

apt找不到key或重複套件，刪掉有問題的apt key

sudo rm /etc/apt/sources.list.d/*cuda*

查看所有可以安裝的版本

apt-cache madison cuda

https://askubuntu.com/questions/447/how-can-i-see-all-versions-of-a-package-that-are-available-in-the-archive

刪除apt key

• 顯示所有key
  apt-key list顯示結果如下

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  /etc/apt/trusted.gpg -------------------- pub rsa4096 2022-05-05 [SCEA] 8298 D919 610D E70B 90CE DAAE EE38 2EF7 8230 7095 uid [ unknown] TensorRT <svc_tensorrt@nvidia.com> /etc/apt/trusted.gpg.d/flexiondotorg_ubuntu_nvtop.gpg ----------------------------------------------------- pub rsa1024 2011-03-16 [SC] 824A 27DD 09DE DA33 BF78 3596 2EA8 F357 93D8 809A uid [ unknown] Launchpad PPA for Martin Wimpress /etc/apt/trusted.gpg.d/graphics-drivers_ubuntu_ppa.gpg ------------------------------------------------------ pub rsa4096 2015-08-12 [SC] 2388 FF3B E10A 76F6 38F8 0723 FCAE 110B 1118 213C uid [ unknown] Launchpad PPA for Graphics Drivers Team

• 刪掉key
  以下面為例，key ID就是最後8碼82307095，sudo apt-key del 82307095就可以刪除

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/etc/apt/trusted.gpg
--------------------
pub   rsa4096 2022-05-05 [SCEA]
      8298 D919 610D E70B 90CE  DAAE EE38 2EF7 8230 7095
uid           [ unknown] TensorRT <svc_tensorrt@nvidia.com>

解決Unmet dependencies問題

• 用dpkg -P package-name來移除有問題的套件，他會顯示不能移除的原因，然後依序移除即可

• 直接用dpkg安裝套件，如果有缺少的相依套件，之後使用apt install就會顯示E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).錯誤，必須要手動解決相依性問提

apt install使用local repo

參考: https://wiki.debian.org/DebianRepository/Setup?action=show&redirect=DebianRepository%2FHowTo%2FTrivialRepository#trivialArchive

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Quick instructions to create a trivial local archive with apt-ftparchive
We use /var/lib/mydebs as the example location

Create the directory

  mkdir -p /var/lib/mydebs
Every time you put new files in the directory, you'll have to scan the directory and update:

  cd /var/lib/mydebs
  apt-ftparchive packages . > Packages
  apt-ftparchive release . > Release
Add this line to /etc/apt/sources.list

  deb [allow-insecure=yes] file:/var/lib/mydebs ./
Now you can install the package normally. If apt-get asks "Install these packages without verification?", answer "Y" to install. That's because this local repository is not signed.

  apt-get update
  apt-get install mydeb

刪除apt gpg key 和repo

https://itslinuxfoss.com/delete-repository-and-gpg-key-ubuntu/#2

查看套件版本

dpkg-query -W tensorrt

用apt 查看可安裝的版本

apt-cache policy <package name>

例如

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$ apt-cache policy gparted
gparted:
  Installed: 0.16.1-1
  Candidate: 0.16.1-1
  Version table:
 *** 0.16.1-1 0
        500 http://ubuntu.inode.at/ubuntu/ saucy/main amd64 Packages
        100 /var/lib/dpkg/status

安裝指定版本
sudo apt-get install <package name>=<version>
例如上面的例子

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$ sudo apt-get install gparted=0.16.1-1
Reading package lists... Done
Building dependency tree       
Reading state information... Done
gparted is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 265 not upgraded.

BigO

• 時間複雜度相加還是相乘
  相加

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  Add the Runtimes: 0 (A + B) 1 for (int a : arrA) { 2 print(a); 3 } 4 5 for (int b : arrB) { 6 print(b) ; 7 }

相乘:

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Multiply the Runtimes: O(A* B) 
1  for  (int  a  :  arrA)  { 
2      for  (int  b  :  arrB)  { 
3          print(a  +  " , "  +  b); 
4      }     
5  } 

• 遞迴的時間複雜度

安裝ncdu檢查是哪一個資料夾滿了
sudo apt install ncdu

參考:
https://cynthiachuang.github.io/Survey-Pedestrian-Attribute-Recognition/

Pedestrian-Attribute-Recognition-Paper-List

https://github.com/2014gaokao/pedestrian-attribute-recognition-with-GCN

https://github.com/valencebond/Rethinking_of_PAR/blob/master/infer.py

https://github.com/cxh0519/VTB

https://github.com/dangweili/pedestrian-attribute-recognition-pytorch

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import http
import requests
def patch_send():
    old_send = http.client.HTTPConnection.send
    def new_send(self, data):
        print(f'{"-"*9} BEGIN REQUEST {"-"*9}')
        print(data.decode('utf-8').strip())
        print(f'{"-"*10} END REQUEST {"-"*10}')
        return old_send(self, data)
    http.client.HTTPConnection.send = new_send
patch_send()
requests.get("http://secariolabs.com")

https://secariolabs.com/logging-raw-http-requests-in-python/

尋找hardware modem

https://www.instructables.com/Install-Modem-USB-Device-in-Raspberry-Pi/

可參考的資料

https://gist.github.com/nstarke/509dab2c91a0bb30e5fa65b922840ce0

看起來像linux的驅動程式

https://github.com/torvalds/linux/blob/42dc814987c1feb6410904e58cfd4c36c4146150/drivers/usb/class/cdc-acm.c#L1773

CDC ACM

https://michael.stapelberg.ch/posts/2021-04-27-linux-usb-virtual-serial-cdc-acm/