//-------------------------------------
    - gpt-2의 tensorflow 버전은 v1.x 이하
tensorflow v1.x의 최신 버전은 v1.15


    - tensorflow의 필요 python 버전
https://www.tensorflow.org/install/source#tested_build_configurations
tensorflow-1.15.0  : python  v2.7, v3.3-3.7
tensorflow-2.9.0 : python  v3.7-3.10


//-------------------------------------
    - 소스 다운로드
> git clone https://github.com/openai/gpt-2.git
> cd gpt-2


//-------------------------------------
    - 가상환경 만들기
> conda create --name gpt2 python=3.7
> conda activate gpt2


//-------------------------------------
    - pip가 없다면 설치
https://pip.pypa.io/en/stable/installation/
> py -m ensurepip --upgrade
https://bootstrap.pypa.io/get-pip.py 파일 다운로드
> py get-pip.py
> pip --version

> python -m pip install --upgrade pip


    - 설치된 패키지 버전 확인
> pip list
> pip show 패키지이름

//-------------------------------------

    - PyTorch 설치

https://pytorch.org/get-started/locally/

 

//-------------------------------------
    - 텐서플로 설치
> pip install tensorflow==1.15
> pip3 install tensorflow-gpu==1.15.0


 - protobuf 패키지는 v3.20 이하로 설치


    - 필요 패키지 설치
> pip install -r requirements.txt


//-------------------------------------
    - 모델 다운로드 (pre trained model download)
GPT-2 model 리스트 : 117M, 124M, 355M, 774M, 1558M

> python download_model.py 117M
> python download_model.py 124M
> python download_model.py 355M
> python download_model.py 774M
> python download_model.py 1558M


//-------------------------------------
    - 실행


> python src\generate_unconditional_samples.py

    - 랜덤글 생성

 


> python src\interactive_conditional_samples.py

    - 입력한 글에 이어서 글 생성


//-------------------------------------
    - 에러
dlerror: cudart64_110.dll not found
tensorflow/stream_executor/platform/default/dso_loader.cc:64] Could not load dynamic library 'cudart64_110.dll'; dlerror: cudart64_110.dll not found


    - 해결 방법
CUDA Toolkit 설치
https://developer.nvidia.com/cuda-toolkit

이전 버전 다운로드
https://developer.nvidia.com/cuda-toolkit-archive
    - 설치파일을 다운로드후, 압축을 풀어서, dll 파일만 CUDA폴더(C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v11.7\bin) 로 복사


https://developer.nvidia.com/rdp/cudnn-archive
    cudnn64_7.dll

 


//-----------------------------------------------------------------------------

//

실행시간 측정 (초)

    - generate_unconditional_samples.py

CPU = Ryzen 5950X ,   GPU = RTX 2060

    모델
  길이 124M 355M 774M
CPU 1024 66 165 320
GPU 17 30 53
GPU 가 빠른 정도(배) 5.1 7.1 7.2
         
  준비시간 5 8 10
GPU 512 11 20 33
256 8 15 23

 

//-----------------------------------------------------------------------------
* gpt-2 , interactive_conditional_samples.py 의 모델별 실행 결과

    - 입력된 문장(gpt-3예제에 쓰인 문장)
Suggest three names for an animal that is a superhero.
Animal: Cat
Names: Captain Sharpclaw, Agent Fluffball, The Incredible Feline
Animal: Dog
Names: Ruff the Protector, Wonder Canine, Sir Barks-a-Lot
Animal: Duck
Names:


//-------------------------------------
i --model_name="117M"

 Hawkeye, Falcon
Wild: Cat
---
Real life: Toothbrush
Game Marketing Approach


//-------------------------------------
i --model_name="124M"

 Beast Maximoff, Aquaman , Tiger Shark
Names: Folly the Beast, Warrior Marvel, and Other Animals
Similarly excellent work online.


//-------------------------------------
i --model_name="355M"

 Pharaoh's Snot Mug, Birdman
Animal: Dolphin
Names: Kudwani, Jack Hammerheart, A* resurrected
Animal: Unicorn
Names: Casino Koala, Heretic
Animal: Wolf
Names: Dirk

//-------------------------------------
i --model_name="774M"

_______, Doxy Bloggie, Bunch of Dudes, Giant Voyageurs
Animal: Chicken
Names: Spetumor
Animal: Creepy Clown
Names: Orange Capri, Chima Mac%
Animal: Robot


//-------------------------------------
i --model_name="1558M"
 Mr. Karate
Animal: Frog
Names: Burning Dagger, Scion of Flame, Creature of Fairy Rain


//-----------------------------------------------------------------------------
//-------------------------------------
// 참고


https://github.com/openai/gpt-2/blob/master/DEVELOPERS.md

 


gpt-2 옵션 temperature  top_k top_p nsamples 에 대한 설명

https://towardsdatascience.com/how-to-sample-from-language-models-682bceb97277

 

 

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