I want to port a trained model to somewhere else but I would like to do it using
pth file rather than
pkl. However, in order to perform predictions using
pth there I have to specify a
dataloader in order to create the leaner using
learn = cnn_learner(dls, resnet34, metrics=[accuracy]).
Is there any way to generate a dummy
dataloader to pass it to
cnn_learner in order to perform
¿Why not use a random image with fake labels? Then you can create a test
dataloader for tour data. This post may help you.
@Joan you should do a learn.export and change the file extension to use the test_dl @vferrer pointed to
Ok! I am struggling a little bit on this. I am unsure if I understood this properly.
If I call
learn.export I will have a
pkl file. You are telling me to change the extension from
pth after saving the model?
Another question is that I’m trying to run the whole prediction in CPU. I am working with single images.
In this sense I tried all the tricks I found to send the model to make the predictions on CPU but I still have jobs when run
nvidia-smi. My code so far looks like this (using
dblock = DataBlock(blocks=(ImageBlock, CategoryBlock),
dls = dblock.dataloaders(df, bs=16, num_workers=8)
dls = dls.cpu()
defaults.use_cuda = False
learn = cnn_learner(dls, resnet34, metrics=accuracy)
img = PILImage.create(os.path.join(test_path, filename))
x, = first(dls.test_dl([img]).to('cpu'))
learn = learn.load('model')
pred,pred_idx,probs = learn.predict(img)
As you may see, I am strongly trying to send the data to cpu but I cannot find the error…
I suggest you to read the 2nd chapter as the fastbook.
basically all you have to do is
learn.export() #do this and you will get export.pkl, copy it to your server
In your server
learn_inf = load_learner(path/'export.pkl')
Thanks for the feedback!
Actually I was aware of this but at some point got lost because I was trying to deploy on
myBinder and getting also
CAM output working.
Anyway, it works nicely with the fastbook pipeline.
How can we retrain this learner model , actually I saved my learner on some other data and now I want to train it on similar dataset but with lesser classes ?
Can anyone guide me on how can I use the previously trained learner model on new dataset, to train on the new dataset,as the databunch is binded to learner.