I'm curious if anyone out there has figured out how to launch an Amazon EC2 instance with just a ramdrive. I am looking at a scenario where I do not need/want any instance storage (all my data is stored as s3 objects). All I want is to launch a micro instance to perform computation.

Perhaps I need to create a tiny AMI - one that can fit in a ramdisk carved out of the instance's 613mb of ram. Creating the AMI is straightforward, but I don't know what commands will load that AMI into ram. And to my eye, nothing in the ec2-run-instances documentation looks relevant.