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As OOC data do not fit into main memory, only a part of them
can be processed at a time. Therefore, there is need to exchange
data between memory and disk. lip
supports an IO buffer mapping data structure that
stores information about memory contents so
there is no need to read data again.
The detailed description of this
behavior is described below.
Additionally the IO latency is minimized by
means of derived data
types
that allow reading non-contiguous data
from disk via only one MPI-IO routine. This is usually implemented
using the data sieving technique
Created by Katarzyna Zając