Setup for FastAI v1
Preparation - Set up GPU drivers
Follow the instructions in Configure GPU on windows page first.
Install Fastai v1
The steps to install v1 of Fastai is made simpler if you use the ArcGIS Deep Learning Essentials conda meta package. The steps are, from your terminal / Anaconda bash run
conda create env -n agslearn python=3.8 conda activate agslearn conda install -c esri arcgis_learn
ags_learn conda meta-package contains a list of all necessary Fastai and related libs for making Deep Learning and Geospatial deep learning possible on Windows and Linux.
Verify GPU is picked up
From terminal or Notebook, run the following
import torch torch.cuda.is_available()
If you get a
True, you are good to go. Else revisit the config doc page listed above.
Additionally, you can time how long it takes between CPU and GPU to run the same compute operation:
import torch t_cpu = torch.rand(800,800,800) # uses CPU %timeit t_cpu @ t_cpu >>> 4.29 s ± 778 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) import torch t_gpu = torch.rand(800,800,800).cuda() # uses GPU %timeit t_gpu @ t_gpu >>> 56.7 µs ± 13.7 µs per loop (mean ± std. dev. of 7 runs, 1 loop each)