Read-only operations via Rapids

h2oai / h2o-3

H2O is an Open Source, Distributed, Fast & Scalable Machine Learning Platform: Deep Learning, Gradient Boosting (GBM) & XGBoost, Random Forest, Generalized Linear Modeling (GLM with Elastic Net), K-Means, PCA, Generalized Additive Models (GAM), RuleFit, Support Vector Machine (SVM), Stacked Ensembles, Automatic Machine Learning (AutoML), etc.

Apache License 2.0

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Via PUBDEV-1280

If Rapids supported a notion of "view-only" operations, then such operations could be bundled with the general set of Rapids capabilities, as opposed to having a separate API call.

This particular ticket is akin to running a combined row-and-column slice on a frame, without jamming the new sliced frame into the DKV. If the Rapids !foo operation could be skipped, and Exec could just shove the result of the slice into the serializer, then it would open up other possibilities.

Essentially, a slice-by-predicate-expression that does not "save" the result.

h2oai / h2o-3

Read-only operations via Rapids #14260