Apache Spark Workload Acceleration with GPUs: A Predictive Approach

In the realm of big data analytics, optimizing processing speed and reducing infrastructure costs remain pivotal concerns. Apache Spark, a leading platform for scale-out analytics, is increasingly exploring GPU acceleration as a means to enhance performance, according to a recent report by NVIDIA.

The Promise and Challenge of GPU Acceleration

While traditionally reliant on CPUs, Apache Spark's shift towards GPU acceleration promises significant speed improvements for data processing tasks. However, transitioning workloads from CPUs to GPUs is not straightforward. Certain operations, such as those involving large data movement or user-defined functions, may not benefit from GPU acceleration. Conversely, tasks involving high-cardinality data, like joins and aggregates, are more likely to see performance gains.

Spark RAPIDS Qualification Tool

To address the complexity of workload migration, NVIDIA introduced the Spark RAPIDS Qualification Tool. This tool analyzes CPU-based Spark applications to identify suitable candidates for GPU migration. By leveraging a machine learning model trained on industry benchmarks, the tool predicts potential performance improvements on GPUs. It functions as a command-line interface available through a pip package and supports various environments, including AWS EMR and Google Dataproc.

Functionality and Output

The tool utilizes Spark event logs from CPU-based applications to assess the feasibility of GPU migration. These logs provide insights into application execution, aiding in the identification of optimal workloads for GPU acceleration. The output includes a list of qualified workloads, recommended Spark configurations, and suggested GPU cluster shapes for cloud service environments.

Customizing Predictions

While pre-trained models cater to general scenarios, the tool also supports the creation of custom qualification models. Users can train models using their own data, enhancing prediction accuracy for unique workloads and environments. This capability is particularly beneficial when existing models do not align with specific performance profiles.

Getting Started

Organizations can leverage the RAPIDS Accelerator for Apache Spark to facilitate GPU migration without altering existing code. Additionally, Project Aether offers tools to automate the qualification and optimization of Spark workloads for GPU acceleration. For more information, refer to the Spark RAPIDS user guide.