What is Collective I/O

In many parallel applications, despite the fact that each process may need to access several noncontiguous portions of a file, the requests of different processes are often interleaved and may together span large contiguous portions of the file. Collective I/O procedure is used to improve significantly the I/O performance by merging the requests of different processes and servicing the merged request.

Improved Checkpoint Using the Effective Management of I/O in a Cloud Environment

Bakhta Meroufel (University of Oran1, Algeria) and Ghalem Belalem (University of Es Senia Oran1, Algeria)