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Empirical Analysis of Disaggregated Cloud Memory on Memory Intensive Applications
Yeonwoo Jeong,Gyeonghwan Jung,Kyuli Park,Youngjae Kim,Sungyong Park 대한전자공학회 2023 Journal of semiconductor technology and science Vol.23 No.5
Disaggregated Cloud Memory (DCM) is a hypervisor-based solution that allows client node to extend local memory by leveraging underutilized memory from remote node. These two nodes are generally connected through Remote Direct Memory Access (RDMA)-based high-bandwidth InfiniBand networks. DCM has been a viable alternative to mitigate the performance degradation of memory-intensive applications in memory-constrained environments. There has also been a growing interest in developing memory-intensive applications with managed languages (we call managed applications) such as Java and Python. These managed languages are easy to use but introduce unpredictability in memory usage at runtime. Despite the advantage of memory extension in DCM, the empirical studies that analyze the performance impact and overhead of running managed applications in DCM are lacking. This paper presents the results of a comprehensive study of DCM on both managed and unmanaged applications. The experimental results revealed that the performance degradation of unmanaged applications in DCM is only less than 6% due to fast remote paging and optimized page eviction policy. However, Garbage Collection (GC) severely degrades the performance of managed applications when page fault occurs, while DCM mitigates the performance degradation efficiently.
김일명(Kim, Ilmyeong),박규리(Park, Kyuli) 조선대학교 국제문화연구원 2021 국제문화연구 Vol.14 No.1
The upcoming scientific technology of the Fourth Industrial Revolution after the pandemic of COVID 19 cannot replace the interaction of human mind and body. The research of psychomotricity in Korea, however, has been done in a way separating psychology from motricity, which has made the disorganized and fragmented state of this academic domain. This paper reviews the original and philosophical concept of psychomotricity by looking into its history from a holistic angle and referring to the preceding material from European countries including Germany. This article study the holistic tradition of Europe emphasizing the human social nature, the function and contents of psychomotricity, and Laban s analysis of movement. Next, the noncompetitive and voluntary attributes of Ernst Kiphard s psychomotor theory is discussed. All this review leads to pursuing the convergence of psychomotricity by consolidating all the related academic information and knowledge with providing the examples of application. Lastly, this paper argues that the research range of psychomotricity should be expanded into the area of therapy besides education by inviting all the efforts related to the interaction between mind and body for developing the human welfare.