Search For:

Displaying 1-5 out of 5 total
To Lease or Not to Lease from Storage Clouds
Found in: Computer
By Edward Walker, Walter Brisken, Jonathan Romney
Issue Date:April 2010
pp. 44-50
Storage clouds are online services for leasing disk storage. A new modeling tool, formulated from empirical data spanning many years, lets organizations rationally evaluate the benefit of using storage clouds versus purchasing hard disk drives.
The Real Cost of a CPU Hour
Found in: Computer
By Edward Walker
Issue Date:April 2009
pp. 35-41
IT organizations can now outsource computer hardware by leasing CPU time through cloud computing services. A proposed modeling tool can quantitatively compare the cost of leasing CPU time from these online services to that of purchasing and using a server ...
Orchestrating and Coordinating Scientific/Engineering Workflows using GridShell
Found in: High-Performance Distributed Computing, International Symposium on
By Edward Walker, Tommy Minyard
Issue Date:June 2004
pp. 270-271
GridShell maps grid and distributed computing concepts to the UNIX shell programming environment. This allows scientific and engineering users, already familiar with Tenex C Shell (tcsh) and Bourne Again Shell (bash), to quickly use the services provided b...
A cloud computing curriculum for undergraduate CS majors (abstract only)
Found in: Proceeding of the 44th ACM technical symposium on Computer science education (SIGCSE '13)
By Edward Walker
Issue Date:March 2013
pp. 737-737
We describe our approach in developing a Cloud Computing course for undergraduate CS majors. Teaching Cloud Computing can be a challenge, as there are many concepts that need to be covered within the limited time-frame of a three-credit hour semester cours...
Composing and executing parallel data-flow graphs with shell pipes
Found in: Proceedings of the 4th Workshop on Workflows in Support of Large-Scale Science (WORKS '09)
By Edward Walker, Vinoth Chandar, Weijia Xu
Issue Date:November 2009
pp. 1-10
In this paper we extend the concept of shell pipes to incorporate forks, joins, cycles, and key-value aggregation. These extensions enable the implementation of a class of data-flow computation with strong deterministic properties, and provide a simple yet...