Globally scheduled real-time multiprocessor systems with GPUs
Real-Time Systems
Gdev: first-class GPU resource management in the operating system
USENIX ATC'12 Proceedings of the 2012 USENIX conference on Annual Technical Conference
VGRIS: virtualized GPU resource isolation and scheduling in cloud gaming
Proceedings of the 22nd international symposium on High-performance parallel and distributed computing
Towards adaptive GPU resource management for embedded real-time systems
ACM SIGBED Review
Zero-copy I/O processing for low-latency GPU computing
Proceedings of the ACM/IEEE 4th International Conference on Cyber-Physical Systems
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Recent windowing systems allow graphics applications to directly access the graphics processing unit (GPU) for fast rendering. However, application tasks that render frames on the GPU contend heavily with the windowing server that also accesses the GPU to blit the rendered frames to the screen. This resource-sharing nature of direct rendering introduces core challenges of priority inversion and temporal isolation in multi-tasking environments. In this paper, we identify and address resource-sharing problems raised in GPU-accelerated windowing systems. Specifically, we propose two protocols that enable application tasks to efficiently share the GPU resource in the X Window System. The Priority Inheritance with X server (PIX) protocol eliminates priority inversion caused in accessing the GPU, and the Reserve Inheritance with X server (RIX) protocol addresses the same problem for resource-reservation systems. Our design and implementation of these protocols highlight the fact that neither the X server nor user applications need modifications to use our solutions. Our evaluation demonstrates that multiple GPU-accelerated graphics applications running concurrently in the X Window System can be correctly prioritized and isolated by the PIX and the RIX protocols.