June 2026 monthly summary for facebookincubator/velox. Delivered GPU Decimal Aggregates (SUM and AVG) as Part 3 of the GPU Decimal implementation, enabling GPU-accelerated decimal sum/average calculations. This feature strengthens Velox's GPU path for decimal arithmetic and improves analytics throughput by offloading decimal aggregations from CPU. Work was delivered via PR 16751 (feat(cudf): GPU Decimal (Part 3) (#16751)), with commit 5ded8d7c00b4a2c5bfe661ebd2c13da0cfaea5f1. Review and merge details included: Reviewed By kKPulla, Pulled By kagamiori, Differential Revision: D108813872. Impact: faster decimal aggregations, reduced CPU workload, and a solid foundation for additional GPU-accelerated aggregates.

May 2026 — IBM/velox: two high-impact features delivered with strong testing and GPU acceleration readiness. Highlights include comprehensive unit tests for CUDF string functions (LIKE, UPPER, LOWER, CONCAT), plus a stabilizing fix for CONCAT; and GPU boolean operators (AND/OR) in Function Mode enabling all-GPU processing for TPC-DS, including short-circuit behavior for literal inputs. These efforts increase correctness, reliability, and performance potential, and establish a solid foundation for full-GPU query execution.

April 2026 monthly summary focusing on key developer accomplishments and business impact for Velox. Primary focus this month was stabilizing zero-size handling in the ToCudfSelection path to prevent test flakiness and improve robustness of cudf integration.

March 2026 monthly summary focused on delivering decimal type support, GPU acceleration readiness, and essential analytics functions in Velox, with Arrow 18 compatibility and groundwork for CUDF/cuDF/NanoArrow integration. Key work includes Arrow Decimal64 support (preserving backward compatibility), groundwork for CUDF Decimal integration, GPU-decimal path preparation, and the addition of DECIMAL CEIL() and CUDF VARCHAR CONCAT, complemented by robustness tests across Arrow versions.

February 2026 Monthly Summary (2026-02): Focused on correctness, build stability, and CI reliability for GPU-accelerated data processing across Velox, Presto, and the IBM Velox fork. Delivered core features and stability improvements, with cross-repo collaboration and targeted test fixes that reduce CI noise and accelerate delivery. Key areas: - Robust CUDF join evaluation with filter validation (Velox) to improve correctness in join operations. - CI stability improvements by temporarily disabling global COUNT(*) test where not yet supported. - Build/toolchain hardening in Presto: CUDA upgrade to 12.9 and Dockerfile/dependency fixes to stabilize native builds. - Linkage and build reliability: adding required Velox libraries to Presto Server linkage to resolve runtime/link-time issues. - S3IO test stability: re-enabling S3ReadTest in Velox IBM fork after stabilization, expanding CI coverage for S3 paths. Business value: - Increased correctness and reliability of GPU-accelerated queries. - Reduced CI failures and faster feedback loops for GPU-related changes. - More predictable builds across CUDA/toolchain updates and cross-project dependencies. - Expanded test coverage improving confidence in production workloads.

Concise monthly summary for 2025-10 focusing on key business value and technical achievements for IBM/velox. Highlights the reliability improvement in the Hadoop dependency download and its impact on build stability and deployment velocity.

August 2025 focused on stabilizing CUDA-enabled builds for IBM/velox and laying groundwork for smoother CUDA upgrades. Delivered CuDF Build and CUDA Compatibility Fixes, improved test reliability, and cleaned up code paths to reduce technical debt. The work enhances deployment stability, CI confidence, and developer velocity for CUDA-enabled workloads.