  This paper presents the overview of the current trends of Big data against
the computing scenario from different aspects. Some of the important aspect
includes the Exascale, the computing power and the kind of applications which
offer the Big data. This starts with the current computing hardware constraint
against the need of the rising Big data applications. We highlight the issues
and challenges of energy requirement, software complexity, hardware failure,
fault tolerant computing, and communication. As the complexity of computation
is going to rise in the future. The paper also highlights the future direction
of Big computing systems for Bioinformatics, social media, hardware and
software requirements, data intensive computation and then towards GPU era.
