%0 Journal Article
	%A Kwangho Cha and  Hyeyoung Cho and  Sungho Kim
	%D 2007
	%J International Journal of Computer and Information Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 8, 2007
	%T Performance Analysis of the Subgroup Method for Collective I/O
	%U https://publications.waset.org/pdf/1854
	%V 8
	%X As many scientific applications require large data processing, the importance of parallel I/O has been increasingly recognized. Collective I/O is one of the considerable features of parallel I/O and enables application programmers to easily handle their large data volume. In this paper we measured and analyzed the performance of original collective I/O and the subgroup method, the way of using collective I/O of MPI effectively. From the experimental results, we found that the subgroup method showed good performance with small data size.

	%P 2344 - 2347