Using text backend raises sampler stats error

[junpenglao]

Yep, text backend does not support sampler stats. You can try pickle the trace

Get nan or inf from model.logp (model.test point) is an attestation of incorrectly configured model?

Haven’t tried this, but it should work (give it a shot with very few samples first!): import cPickle as pickle # if python2 import pickle # if python3 ... trace = pm.sample(5e4, njobs=4, step=[pm.Metropolis(vars=[Y, Yp]), pm.NUTS()], tune=1000) with open('trace.pkl', 'wb') as buff: pickle.dump(trace, buff) You can then recover the trace with with open('trace.pkl', 'rb') as buff: trace = pickle.load(buff) This is great for local development on your computer. A few “gotchas” that p…