Seungjo Bae

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Wireless sensor networks are rapidly emerging as an important area in ubiquitous computing industry. They are very tiny devices with limited energy, memory, transmission range, and computation power. So, wireless sensor networks are vulnerable to security attack such as sinkhole attack, wormhole attack, and simple power exhaustion attack. However, wireless(More)
Vector prefix and reduction are collective communication primitives in which all processors must cooperate. We present two parallel algorithms, the direct algorithm and the split algorithm, for vector prefix and reduction computation on coarse-grained, distributed-memory parallel machines. Our algorithms are relatively architecture independent and can be(More)
System virtualization come into the spotlight again with the emerging virtual machine (VM) technologies (e.g., Parallels, VMware and Xen). With these market trends toward virtual environments, many research groups are developing evaluation tools to check the performance of virtual systems and their overheads. However, the performance characterization in(More)
We present experimental results for parallelizing two breadth-rst search-based applications on the CM-5 by using two diierent message-passing paradigms, one based on send/receive and the other based on active messages. The parallelization of these applications requires ne-grained communication. Our results show that the active messages-based implementation(More)
The main objective of this work is to implement the Multivari approach along with Design of Experiment (DOE) framework to effectively benchmark the hypervisors over heterogeneous workloads. Multivari approach determines the interaction effect very easily for many factors at a time by keeping panel parameter constant. This experiment has given a very(More)
A new dynamic LOD system is recently proposed to represent fairly large artificial terrains using hierarchical triangular patches[5]. Its mesh structure is unique from other conventional methods because it is designed to reduce the total number of draw primitive calls in a frame rather than the number of primitives. Another distinctive feature is its(More)
We present experimental results for parallelizing two breadth-rst search-based applications on the CM-5 by using two diierent message-passing paradigms, one based on send/receive and the other based on active messages. The parallelization of these applications requires ne-grained communication. Our results show that the active messages-based implementation(More)
We present experimental results for parallelizing two breadth-rst search-based applications on Thinking Machine's CM-5 by using two diierent message-passing paradigms, one based on send/receive and the other based on active messages. The parallelization of these applications requires ne-grained communication. Our results show that the active messages-based(More)
We present experimental results for parallelizing two breadth-rst search-based applications on the CM-5 by using two diierent message-passing paradigms, one based on send/receive and the other based on active messages. The parallelization of these applications requires ne-grained communication. Our results show that the active messages-based implementation(More)
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