CSMV: A highly scalable multi-versioned software transactional memory for GPUs

This paper introduces CSMV (Client Server Multiversioned), a multi-versioned Software TM (STM) for GPUs that adopts an innovative client-server design. By decoupling the execution of transactions from their commit process, CSMV provides two main benefits: (i) it enables the use of fast on chip memory to access the global metadata used to synchronize transaction (ii) it allows for implementing highly efficient collaborative commit procedures, tailored to take full advantage of the architectural characteristics of GPUs. Via an extensive experimental study, we show that CSMV achieves up to 3 orders of magnitude speed-ups with respect to state of the art STMs for GPUs and that it can accelerate by up to 20x irregular applications running on state of the art STMs for CPUs. & COPY; 2023 Elsevier Inc. All rights reserved.

Automated summary

This paper introduces CSMV, a multi-versioned Software TM for GPUs with an innovative client-server design. CSMV provides the benefits of utilizing fast on chip memory and implementing efficient collaborative commit procedures, leading to significant speed-ups compared to state of the art STMs for GPUs and CPUs.