The Scientific Portal (SciPortal)
Project was partially supported by OSC, DoD, and participants family
- Front end, Problem Solving Environment (PSE) in which problems
to be solved are stated, translated into requests for computational
resources (such as software, hardware, information resources and other
types of resources), and an analysis of the results can be performed.
This multi-step view of doing science is encompassed in the
toolkits. Based initially on servlets, but JSPs were introduced
- Middle Tier -- necessary services and operations to provide
information, access to back end resources, persistance, authentication
and authorization, hierarchy of contexts, parsing, file services,
data communcation, etc. Webflow used CORBA to communicate between objects
in the client (applet) and on the server.
- Back End
- Actual HPC. We used ssh for logging to user accounts
without password (./ssh/authorized_keys),
We could have used Globus, but GIS was not yet ready for prime time.
In fact, most code to interact with Globus was written.