5916

GPU-to-CPU callbacks

Jeff A. Stuart, Michael Cox, John D. Owens
University of California, Davis
Euro-Par 2010 Workshops: Proceedings of the Third Workshop on UnConventional High Performance Computing (UCHPC 2010), volume 6586 of Lecture Notes in Computer Science, pages 365-372, Springer, 2010

@inproceedings{Stuart:2010:GC,

   author={Jeff A. Stuart and Michael Cox and John D. Owens},

   title={GPU}-to-{CPU} Callbacks},

   series={Lecture Notes in Computer Science},

   volume={6586},

   publisher={Springer},

   booktitle={Euro-Par 2010 Workshops: Proceedings of the Third Workshop on UnConventional High Performance Computing (UCHPC 2010)},

   year={2011},

   pages={365–372},

   url={http://www.idav.ucdavis.edu/publications/print_pub?pub_id=1039},

   doi={10.1007/978-3-642-21878-1_45},

   month={jul},

   lncsurl={http://www.springer.com/computer/communication+networks/book/978-3-642-21877-4},

   acceptance={9/16 (56%)},

   ucdcite={a56}

}

Download Download (PDF)   View View   Source Source   

937

views

We present GPU-to-CPU callbacks, a new mechanism and abstraction for GPUs that offers them more independence in a heterogeneous computing environment. Specifically, we provide a method for GPUs to issue callback requests to the CPU. These requests serve as a tool for ease-of-use, future proofing of code, and new functionality. We classify the types of these requests into three categories: System calls (e.g. network and file I/O), device/host memory transfers, and CPU compute, and provide motivation as to why all are important. We show how to implement such a mechanism in CUDA using pinned system memory and discuss possible GPU-driver features to alleviate the need for polling, thus making callbacks more efficient with CPU usage and power consumption. We implement several examples demonstrating the use of callbacks for file I/O, network I/O, memory allocation, and debugging.
No votes yet.
Please wait...

* * *

* * *

HGPU group © 2010-2017 hgpu.org

All rights belong to the respective authors

Contact us: