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Data races hamper parallel programming and threaten the reliability of future software. This paper proposes the data race prevention scheme View-Oriented Data race Prevention (VODAP), which can prevent data races in the View-Oriented Parallel Programming (VOPP) model. VOPP is a novel shared-memory data-centric parallel programming model, which uses views to bundle mutual exclusion with data access...
This paper proposes a data race prevention scheme, which can prevent data races in the View-Oriented Parallel Programming (VOPP) model. VOPP is a novel shared-memory data-centric parallel programming model, which uses views to bundle mutual exclusion with data access. We have implemented the data race prevention scheme with a memory protection mechanism. Experimental results show that the extra overhead...
Parallel computing has been in the spotlight with the advent of multi-core computers. The popular multithreading model does not scale very well when there are hundreds or thousands of cores, since it can only help exploit coarse-grained parallelism. There exist a lot of fine-grained parallelism to be exploited in I/O tasks and memory accesses during execution of a thread. Our counter-Amdahl's law...
Considerable power is consumed by unused computers. Studies show many of these computers have their power management features disabled in order to maintain their network presence and network connections. Past research proposes to use a low power proxy to 'stand in' for a computer, allowing it to go to sleep and thus save power while still maintaining its network presence. This paper describes a method...
In the last few years, GPUs(Graphics Processing Units) have made rapid development. Their ever-increasing computing power and decreasing cost have attracted attention from both industry and academia. In addition to graphics applications, researchers are interested in using them for general purpose computing. Recently, NVIDIA released a new computing architecture, CUDA (compute united device architecture),...
End devices connected to the Internet consume a considerable amount of electricity. Studies show many of these computers have their power management features disabled in order to maintain their network presence and network connections. Past research proposes to use a low power proxy to 'stand in' for a computer, allowing it to go to sleep and thus save power while still maintaining its network presence...
Delivering live streaming content over the Internet requires low delay and smooth packet transmission rate. TCP introduces rate oscillations and requires more buffering and bandwidth to sustain uninterrupted playback. In this paper we propose a new framework which facilitates streaming flows. Our solution provides a smoother rate control than TCP and improves streaming performance based on cross layer...
This paper describes the use of remote memory for virtual memory swapping in a cluster computer. Our design uses a lightweight kernel-to-kernel communications channel for fast, efficient data transfer. Performance tests are made to compare our system to normal hard disk swapping. The tests show significantly improved performance when data access is random.
The best-effort service model of the Internet is unsuitable for streaming applications which require a smooth and flexible packet transmission rate. TCP is unable to provide such a sending rate due to its strict adherence to congestion control. We study the effect of the transport protocolpsilas send buffer size on the performance of streaming media and propose a dynamic send buffer tuning approach...
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