udf-convert-to-cudf

What problem does it solve?

This Skill helps you convert an existing Apache Spark UDF into a GPU-accelerated RapidsUDF so it can run efficiently on NVIDIA GPUs while preserving CPU compatibility.

Core Features & Use Cases

• Create the GPU UDF Wrapper: Add the required cuDF imports, implement the RapidsUDF interface, and rename the class appropriately.
• Implement Columnar Logic: Translate row-based UDF behavior into evaluateColumnar using cuDF ColumnVector operations.
• Validate and Harden: Update comparison tests, verify CPU and GPU results match, and check for GPU memory leaks.
• Use Case: Apply this when you already have a tested Spark UDF and need a production-ready GPU version for accelerated Spark jobs.

Quick Start

Use this skill to convert my tested Spark UDF into a RapidsUDF and update the comparison test for GPU execution.