  Future terabit networks are committed to dramatically improving big data
motion between geographically dispersed HPC data centers.The scientific
community takes advantage of the terabit networks such as DOE's ESnet and
accelerates the trend to build a small world of collaboration between
geospatial HPC data centers. It improves information and resource sharing for
joint simulation and analysis between the HPC data centers. In this paper, we
propose to build SCISPACE (Scientific Collaboration Workspace) for
collaborative data centers. It provides a global view of information shared
from multiple geo-distributed HPC data centers under a single workspace.
SCISPACE supports native data-access to gain high-performance when data read or
write is required in native data center namespace. It is accomplished by
integrating a metadata export protocol. To optimize scientific collaborations
across HPC data centers, SCISPACE implements search and discovery service. To
evaluate, we configured two geo-distributed small-scale HPC data centers
connected via high-speed Infiniband network, equipped with LustreFS. We show
the feasibility of SCISPACE using real scientific datasets and applications.
The evaluation results show average 36\% performance boost when the proposed
native-data access is employed in collaborations.
