A Practical Evaluation of a Data Consistency Protocol for Efficient Visualization in Grid Applications
Gabriel Antoniu (IRISA / INRIA)Loïc Cudennec (IRISA / INRIA)
Sébastien Monnet (IRISA / University of Rennes 1)
Abstract:
Data visualization is important in the context of grid applications,
especially when successive refinements are iteratively realized based
on intermediate results. We mainly focus on code coupling grid
applications, structured as a set of distributed, autonomous,
weakly-coupled codes. We consider the case where the codes are able to
interact using the abstraction of a shared data space. In previous
work, we have proposed an efficient visualization scheme by
introducing a new operation called relaxed read, as an extension to
the entry consistency model. This operation can efficiently take place
without locking, in parallel with write operations. On the other hand,
the user has to relax the consistency constraints, and accept slightly
older versions of the data, whose ``freshness'' can however still be
controlled. In this paper, we discuss and extensively evaluate the
proposed consistency protocol, whose efficiency is clearly
demonstrated by our experimental results.
Keywords:
Data Grid infrastructures
, Replication and fault-tolerance in Grids
, Grid performance evaluation
