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Machine Learning
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Somi
by • New Contributor III
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Resolved! How to set sparkTrials? I am receiving this TypeError: cannot pickle '_thread.lock' object

I am trying to distribute hyperparameter tuning using hyperopt on a tensorflow.keras model. I am using sparkTrials in my fmin:spark_trials = SparkTrials(parallelism=4)...best_hyperparam = fmin(fn=CNN_HOF,                  space=space,                ...

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Dooley
Valued Contributor II
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This can happen when you try to serialize a keras model with an unserializable layer. What does your model look like? Also what is in that search space variable? What are you trying to optimize on?

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