GPU2 server performance

[VijayPande]

We've been looking over the server code to see what's going on and I think we have some news. What's happening is that the server is being a bit too generous in terms of when it times out connections, filling up all of the available server threads. For now, we've bumped up the # of threads (not unlike adding more cashiers at the grocery isle, so that a few slow people don't slow down everyone) from 200 to 1500. That should help a lot in the short term. On Monday, we'll make some code modifications to make a more complete fix to this.