The OGCE is portal software, not a specific portal. Sun Kim's group has used the GFAC service to manage EC2 images and also to manage applications within an EC2 image itself. This can be done with off-the-shelf versions of the software. Suresh will be giving a talk about the details of how to do this at TG10 next week as part of the tutorial on Cloud Technologies, Data Intensive Science and the TeraGrid (Monday, 8-noon). We are in the 10-30-12:00 section.
We also have a TeraGrid tutorial on OGCE tools, including XBaya mentioned by Sun Kim today, Monday 1:00-5:00.
Marlon