OK, after using the service for slightly more than a week, here’s my evaluation:
I got my account created ~day after I subscribed. It seems the machines and support staff are located in Singapore. I was assigned to bronze.zetaexpress.com and was told the machine’s only lightly loaded, so they will count neither my GPU or CPU usage. I still needed to use ze lock and ze release to get a GPU. I wrapped my executable in a shell program that catches ctrl-C so it always calls ze release.
I believe the OS is 64bit RedHat enterprise. The libraries are a bit old. It’s still using libc5 and barely has any development libraries/includes installed. I spent about an hour to copy all the image libs I need and recompiling some due to missing functions in libc5. Also scp & rsync were broken (rsync uses scp), which I notified them about, but rather than fixing, I came up with a clever solution:
ssh bronze.zetaexpress.com “cat > a.7z” < a.7z
After I got everything to compile, my program runs exactly as expected. The wall clock time is the same as I got on Windows Server to 2 figures. Infinite GPU loops can be aborted with ctrl-C, which I can’t figure out how to do on Vista. Overall, the Teslas worked solidly for me and I don’t know what else to say. I didn’t run anything lengthy, so I can’t say anything about stability, but Tesla is designed for high reliability.
If there’s anything else you want to know, feel free to ask.