November 21, 2005
For the first time, three radio
telescopes distributed around the world will be connected via
dynamically provisioned dedicated optical circuits for an electronic
Very-Long-Baseline Interferometry (e-VLBI) observation. Internet2
announced this scientific and networking achievement at the first major
demonstration of its nationwide Hybrid Optical and Packet
Infrastructure (HOPI) testbed, during the SC.05 conference held in
Seattle. The demonstration marks a critical
milestone in dynamic or "on demand" optical networking that can support
even the most extreme applications used by the global research and
education community today.
Leveraging the HOPI infrastructure together with the NSF-funded
DRAGON testbed, the telescopes located in Westford, Ma., Greenbelt,
Md., and Onsala, Sweden, will be dynamically linked via dedicated
low-latency optical circuits to a central data correlator and
simultaneously transmit multiple gigabits-per-second of data during a
20-minute observation. The team will also attempt to connect to a
fourth telescope in Kashima, Japan, during the demonstration.
Historically, radio astronomy data was recorded on magnetic tape or
disk at each site and shipped to the central processing location for
"VLBI is one of the most powerful techniques available for the high-
resolution imaging of distant radio sources in the universe and for
making accurate measurements of the motion of the earth in space," said
Alan Whitney, principal scientist at the MIT Haystack Observatory in
Westford. "These capabilities also allow scientists to
measure such things as continental drift and to calibrate the orbits of
GPS satellites to enable more accurate position measurements on the
surface on the Earth. Advanced optical networks like HOPI and DRAGON,
will undoubtedly open new doors for radio-astronomy observations and
As a part of Internet2's mission to design and deliver an advanced
network infrastructure to meet the emerging needs of the research and
education community, Internet2 has built the HOPI nationwide testbed to
investigate next-generation network architectures that combine the best
qualities of optical and packet technologies. The testbed is a model
for the future of Internet2's high performance Abilene network which
serves as a platform for both experimental networking applications as
well as stable production IP services.
"The HOPI testbed has far-reaching applications in the scientific,
engineering, and medical arenas which have come to require far more
sophisticated network and resources than those previously available,"
said Rick Summerhill, co-chair of the HOPI design team and Internet2
director of network research, architecture and technologies.
"Internet2's HOPI investigation represents a new paradigm in networking
that goes well beyond traditional production services of today. In
doing so, we hope to catalyze a new era of advanced applications which
at this point have only been imagined."
Not only will the demonstration highlight the capability to
provision on-demand light paths within an administrative domain, but
it also proves for the first time, the ability to provision those
optical circuits across multiple network administrative domains for
global data transmissions. Utilizing DRAGON-developed inter-domain
Generalized Multiprotocol Label Switching (GMPLS) capabilities, which
provides control plane capabilities, automated end-to-end circuit
provisioning, and management of network resources, the optical routes
were seamlessly connected across scientific, HOPI and DRAGON domains.
The paths also crossed UKLight, SURFnet, NorthernLight, Nordunet,
SUnet, JGN2, StarlLight, GIG-EF and BOSnet.
"We believe the control plane technologies DRAGON has developed and
integrated into HOPI pulls together a number of efforts within the
R&E community and the international Internet standards bodies to
show that these dynamic hybrid network architectures are indeed viable
and of great value to the scientific and academic communities," said
Jerry Sobieski, lead coordinator of the HOPI Testbed Support Center and
project manager for the DRAGON Project. "This demonstration opens the
door for both significant advances in radio astronomy and geodesy as
well as establishes a foundation on which the global networking
community can expand the scope and availability of these capabilities."
Researchers from the Suddhananda Engineering and Research Centre in Bhubaneswar, India developed a job scheduling system, which they call Service Level Agreement (SLA) scheduling, that is meant to achieve acceptable methods of resource provisioning similar to that of potential in-house systems. They combined that with an on-demand resource provisioner to ensure utilization optimization of virtual machines.
Experimental scientific HPC applications are continually being moved to the cloud, as covered here in several capacities over the last couple of weeks. Included in that rundown, Co-founder and CEO of CloudSigma Robert Jenkins penned an article for HPC in the Cloud where he discussed the emergence of cloud technologies to supplement research capabilities of big scientific initiatives like CERN and ESA (the European Space Agency)...
When considering moving excess or experimental HPC applications to a cloud environment, there will always be obstacles. Were that not the case, the cost effectiveness of cloud-based HPC would rule the high performance landscape. Jonathan Stewart Ward and Adam Barker of the University of St. Andrews produced an intriguing report on the state of cloud computing, paying a significant amount of attention to the problems facing cloud computing.
Jun 19, 2013 |
Ruan Pethiyagoda, Cameron Boehmer, John S. Dvorak, and Tim Sze, trained at San Francisco’s Hack Reactor, an institute designed for intense fast paced learning of programming, put together a program based on the N-Queens algorithm designed by the University of Cambridge’s Martin Richards, and modified it to run in parallel across multiple machines.
Jun 17, 2013 |
With that in mind, Datapipe hopes to establish themselves as a green-savvy HPC cloud provider with their recently announced Stratosphere platform. Datapipe markets Stratosphere as a green HPC cloud service and in doing so partnering with Verne Global and their Icelandic datacenter, which is known for its propensity in green computing.
Jun 12, 2013 |
Cloud computing is gaining ground in utilization by mid-sized institutions who are looking to expand their experimental high performance computing resources. As such, IBM released what they call Redbooks, in part to assist institutions’ movement of high performance computing applications to the cloud.
Jun 06, 2013 |
The San Diego Supercomputer Center launched a public cloud system for universities in the area designed specifically to run on commodity hardware with high performance solid-state drives. The center, which currently holds 5.5 PB of raw storage, is open to educational and research users in the University of California.
05/10/2013 | Cleversafe, Cray, DDN, NetApp, & Panasas | From Wall Street to Hollywood, drug discovery to homeland security, companies and organizations of all sizes and stripes are coming face to face with the challenges – and opportunities – afforded by Big Data. Before anyone can utilize these extraordinary data repositories, however, they must first harness and manage their data stores, and do so utilizing technologies that underscore affordability, security, and scalability.
04/02/2012 | AMD | Developers today are just beginning to explore the potential of heterogeneous computing, but the potential for this new paradigm is huge. This brief article reviews how the technology might impact a range of application development areas, including client experiences and cloud-based data management. As platforms like OpenCL continue to evolve, the benefits of heterogeneous computing will become even more accessible. Use this quick article to jump-start your own thinking on heterogeneous computing.