Status Report for 11/1/06 to 11/7/06

During the last week, I was working on Big Red portal by customizing for Supercomputing 06 and updating key portlets such as MEME job submission portlet and MOAB job queue portlets. Major works on portlets are as follows

1. MEME job submission portlet
a. File downloading: Basically, in portlets, file downloading feature is not working well since html header cannot be set by portlets but, instead, portlet container usually control html header such as "Content type" or "Content-Disposition". Thus, using servlet than portlet is more ideal in this situation. Good news here is that servlet and portlet can share data by using session. Thus, I created a servlet for file downloading which can get proxy information for authorization by using shared session.
b. Output retrieval: Outputs executed by a job managers can be retrieved later by using job handler which is an URL string starting with "http" or "https". Under the hood of this function, GASS server is in charge to save data and hand it over to the client upon request.

2. MOAB job queue viewer

a. Job query belongs to the user: Since each machine in Teragrid has different user map file on user certificate, username(id) can be different system by system even in using the same certificate. Simply, we can submit a GRAM job before starting query to get back a correct username by executing “whoami” command. Later, I’m planning to maintain information service to map usernames on different machines file by using RDF and Jena from HP labs.