Inside Java Newscast #58 // nipafx

Project Babylon is a new OpenJDK initiative aimed at enabling Java code to run on GPUs and other accelerators. Its core mechanism, called code reflection, extends Java's existing reflection to provide a detailed code model—accessible at compile and run time—that libraries can use to analyze, translate, and execute Java logic in non-JVM environments. The Heterogeneous Accelerator Toolkit (HAT) is a prototype built on code reflection that offloads Java computation to GPUs via OpenCL or CUDA, using Project Panama's Foreign Function and Memory API for off-heap data management. Early benchmarks show a 10x speedup over parallel Java code for facial recognition tasks. Code reflection is planned for eventual inclusion in OpenJDK, while HAT is intended as an external library with GPU vendors implementing backend-specific translations.