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Hi I’m david

What talk is about

Thanks?

Three kinds of material

An motivated by key observation: change painful

Don’t just take my word for it …

Compare to other dist systems …

Key difference: can’t just install new code

Idea: so use mobile code …

For example, …

This was the vision …

There are many ways to go about it

ANTS is pretty aggressive, far beyond commercial world

Interesting change over the past few years: acceptance of the role of computation

Now onto ants

Export control, not

For example … arbitrating resource requests, protection

To realize all we need to build is a scalable, robust, efficient, secure and extensible distributed system … there were complications on the way

Need something to run programs on … active nodes … incrementally deployable / back compat

Nodes provide api. Our is lightweight – soft-state is a key decision

Nodes provide protection by running programs safely, limit packet rewriting for security and debugging

Nodes do the resource management

We need to