Status Report for 04/19/07 to 04/25/07

I have updated STFILTER by adding project management function and input and output file downloading feature. For this purpose, new STFILTERProjectBean class has been added like RDAHMM and an object database, Db4o, is used to save and restore STFILTERProjectBean object. I also cleared out most of dependencies on old context manager class. A few minor issues I'm facing are:

1. Lock related errors in using Db4o. Currently, I disabled lock features to prevent such errors. But, I don’t know which is better way for STFILTER portlet.
   
2. Analyze_tseri web service is now saving user’s input and output under a directory in a way a user can download files directly through http protocol. However, at some point, such files should be deleted to save disk spaces. I didn’t decided yet when and which is the best way to do that.

During the next week, I will do more test to find out any bug and improve some cosmetic things.

Status Report for 04/012/07 to 04/18/07

1. STFILTER portlet
I’ve updated STFILTER portlet by adding more time series parameter filters. In addition, time series analysis service (analyzeTseri) and STFILTER portlet has be updated with easy installation procedure so that most user dependent system settings can be done in installation step As for the next step, I will add project management features in STFILTER portlet.
2. Network Weather Service
I’m still searching for how to get list of hosts served as Network Weather Service hosts. There is no open information to list up such hosts. I think we need to ask either TeraGrid help desk or Network Weather Service development team

Status Report for 04/05/07 to 04/11/07

1. STFILTER portlet
I’m still updating both analyze-tseri-exec webservice and STFILTER portlet to work with addition parameters for time series analysis. Although no technical difficulties yet, it takes some time to make them more general as they are sharing same code in many cases. I will finish this update in a few days. After updating, I will modify the project management part of STFILTER portlet.

2. TeraGrid 07 final paper submission
I’ve been updating TeraGrid 07 paper for camera ready, co-worked with Mehmet and Marlon. The final due is April 12th.

3. Network Weather Service
I sent an email to NWS’s developer mailing list (nws-dev@cs.ucsb.edu) to query about any possibility to get network bandwidth service but haven’t get any reply yet. To prepare worst case, I think I need to find other way to get such information.

Status Report for 03/29/07 tto 04/04/07

1. STFILTER portlet
I'm updating analyze_tseri web service to use a bean as an input parameter. Accordingly STFILTER portlet will be updated soon.
As for the next step, I'm planning to upgrade STFILTER portlet as follow:
a. Adding more options on filter parameter.
b. Using property file, instead of web.xml or portlet.xml
c. Modifying project management
d. Fixing some bugs when clicking "edit" mode button.

2. Network Weather Service
After installing nws package from NWS website, I found a NWS command for extracting inter-machine bandwidth and latency measurements as follow:

$ html-hosts -N nws.cs.ucsb.edu sperm.cs.ucsb.edu beluga.cs.ucsb.edu

Bandwidth values are measured in Megabits/second; latency in milliseconds

Source machine			Destination machine
			sperm.cs.ucsb.edu	beluga.cs.ucsb.edu
sperm.cs.ucsb.edu		bw forecast error lt forecast error	- - - - - -	86.10412000 86.10059000 1.759016353 0.429000000 0.370000000 0.091088105
beluga.cs.ucsb.edu		bw forecast error lt forecast error	85.42371000 85.52822000 4.072307805 1.648000000 1.702000000 0.320489947	- - - - - -

However, I haven't found yet if I can use this command more generally, for example, in TeraGrid clusters. It seems like if I know a name server of a cluster, it will be possible to get network bandwidth information. But, I don't know how I can get list of such name server. I will dig into that more.