HPCC is a world-wide famous academic conference with high reputation(ranked as C class by CCF). One year after HPCC 2014, REINS is back to participate in HPCC 2015 with two important research. The first one is WHOBBS: An Object-based Distributed Hybrid Storage Providing Block Storage for Virtual Machines(presented by Lingxuan Shen), and the other one is RaHeC: A Mechanism of Resource Management for Heterogeneous Clouds(presented by Wenyun Dai). Both of them focused on the area of cloud computing, a main research area of REINS in recent years.
WHOBBS—Because of its high IO performance, Solid State Drivers (SSDs) are playing an important role in cloud storage services. However, its ten times price of Hard Disk Drivers (HDDs) makes it unaffordable for most companies to replace all traditional HDD storage with high performance SSD storage. Hybrid storage becomes a trade-off solution between relatively high performance and acceptable cost. In this paper, we propose an object-based hybrid storage system called WHOBBS to provide high-performance block storage for virtual machines in IaaS. WHOBBS introduces logical storage pools to manage different types of storage devices and splits VM disk images into the objects residing in different storage pools. WHOBBS will optimize the IO performance of the system by dynamic object migration, according to the periodically analyzed access patterns of all objects and the determined global object placement strategy. We evaluate WHOBBS under several benchmarks and demonstrate its efficiency and effectiveness.
RaHeC-Heterogeneous cloud provides a feasible and attrac- tive kind of infrastructure to the cloud applications which want to obtain high performance, availability or profit. Meanwhile, the cloud providers consider heterogeneous cloud as an ideal form to manage their computing resource since it can improve the utilization of their computing resources and extend the computing power of an individual provider. In this paper, we analyze the structure of heterogeneous cloud, and propose a framework of multi-objective constrained resource management, including dynamic profit-driven provisioning, availability-aware placement and power-saved consolidation. The result of our experiments has demonstrated the feasibility and effectiveness of the proposed framework.
Besides the presentation, REINSians gathering was another exciting event. Former REINSians, Qing Zheng(Ph.D candidate of CMU), Wenyun Dai(Ph.D candidate of Pace University) and Yuxi Shen(Master student of Cornell University at NY) had a dinner party with Haopeng Chen and Lingxuan Shen.
The above picture was shot at the HPCC 2015, which took place at New York, USA, 2015.08.24-2015.08.26