MareArts Computer Vision Study.

tensorflow gpu install window error : self_check.py...ImportError: Could not find 'cudnn64_6.dll...

December 25, 2017

hmm......I have taken for about 5 hours for solve this problem....

error is like that:

Traceback (most recent call last):
File "C:\Users\mare\Anaconda3\envs\mare4\lib\site-packages\tensorflow\python\platform\self_check.py", line 87, in preload_check
ctypes.WinDLL(build_info.cudnn_dll_name)
File "C:\Users\mare\Anaconda3\envs\mare4\lib\ctypes\__init__.py", line 348, in __init__
self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] 지정된 모듈을 찾을 수 없습니다
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\mare\Anaconda3\envs\mare4\lib\site-packages\tensorflow\__init__.py", line 24, in <module>
from tensorflow.python import *
File "C:\Users\mare\Anaconda3\envs\mare4\lib\site-packages\tensorflow\python\__init__.py", line 49, in <module>
from tensorflow.python import pywrap_tensorflow
File "C:\Users\mare\Anaconda3\envs\mare4\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 30, in <module>
self_check.preload_check()
File "C:\Users\mare\Anaconda3\envs\mare4\lib\site-packages\tensorflow\python\platform\self_check.py", line 97, in preload_check
% (build_info.cudnn_dll_name, build_info.cudnn_version_number))
ImportError: Could not find 'cudnn64_6.dll'. TensorFlow requires that this DLL be installed in a directory that is named in your %PATH% environment variable. Note that installing cuDNN is a separate step from installing CUDA, and this DLL is often found in a different directory from the CUDA DLLs. You may install the necessary DLL by downloading cuDNN 6 from this URL: https://developer.nvidia.com/cudnn

In conclusion..
just use cudnn 6.0, that is Download cuDNN v6.0 (April 27, 2017), for CUDA 8.0

I have tried many time
cuda 9.1 + cudnn 7.x
cuda 8.0 + cudnn 7.x
...
but I never successed

tensorflow official site recommend
cuda 8.0 + cudnn 6.1
https://www.tensorflow.org/install/install_windows
I just ignore this mention, because you know I thought the document is outdated.

This is simple tutorial for install tensorflow-gpu in window.

1. install anaconda.

conda create -n tensorflow python=3.5

2. install cuda 8.0 and cudnn 6.x

move cudnn header, lib and dll to cuda 8.0 folder
http://docs.nvidia.com/deeplearning/sdk/cudnn-install/index.html#installwindows

3. install tensorflow-gpu

pip install --ignore-installed --upgrade tensorflow-gpu

4. check tensorflow-gpu

>>> import tensorflow as tf
>>> tf.test.is_built_with_cuda()
Ture

django + mysql setting (Mac or Linux)

December 24, 2017

A. mysql install

1. download mysql

https://dev.mysql.com/downloads/mysql/

* site may ask to join, but we don't need to join for download file

* install -> in case of Mac, show default password on popup window.

2. set path

$nano ~/.bash_profile

add this sentence

#mysql

export PATH=/usr/local/mysql/bin:$PATH

3. start mysql & set password

$ sudo /usr/local/mysql/support-files/mysql.server start

create a username with a password

$ mysqladmin -u root&nbsp;password yourpassword

change the password

$ mysqladmin -u root -p'oldpassword' password newpassword

4. create mysql database

$ mysql -u root -p
Enter password:

create database

CREATE DATABASE taskbuster_db;

B. django setting

1. install pymysql

$pip install pymysql

2. django settings.py

import pymysql
pymysql.install_as_MySQLdb()

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',

'NAME': 'django_locker', # DB name

'USER': '', # database user : root

'PASSWORD': '', # database pass

'HOST': '', # localhost

'PORT': '', # database port('' or 3306)    }
}

3. migration

$python manage.py makemigrations

$python manage.py migrate

Anaconda simple command

December 24, 2017

version check

$ conda -V 
conda 3.7.0

update

conda update conda

create virtual env

conda create -n yourenvname python=x.x anaconda

activate

source activate yourenvname

install additional python packages

conda install -n yourenvname [package]

deactivate

source deactivate

remove virtual env

conda remove -n yourenvname --all

show all virtual env list

conda info --envs

conda env list

anaconda uninstall

conda install anaconda-clean   # install the package anaconda clean

anaconda-clean --yes           # clean all anaconda related files and directories

rm -rf ~/anaconda3             # removes the entire anaconda directory

#rm -rf /user/username/anaconda3 or rm -rf /Users/username/anaconda3

rm -rf ~/.anaconda_backup       # anaconda clean creates a back_up of files/dirs, remove it

                            # (conda list; cmd shouldn't respond after the clean up)

minianaconda install

bash Miniconda3-latest-MacOSX-x86_64.sh

https://conda.io/docs/user-guide/install/macos.html#install-macos-silent