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> What about a Docker cluster

Working on it :)

Certain elements are already in place - for example docker already has a remote api, and we introduced a "links" feature to connect containers to each other. We are still fleshing this out, but in the coming weeks you should see a robust end-to-end solution for standing up an entire cluster of docker hosts and interact with them as a cohesive unit.

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That sounds awfully like a grid scheduler (think Sun Grid Engine, and its derivatives), which I greatly welcome: the market (for grid schedulers) is a bit barren at the moment after Sun's buyout.

What's the status on accessing other system resources from containers (e.g. GPUs)? There was some work being done to enable this, but I'm not sure if the eventual solution was "run the container with less security so that it can access the cards", or if there was a more graceful approach

I think native integration with Apache Mesos (more than just the mesosphere docker executor) would solve that problem quite nicely. Docker seems like a perfect fit for Mesos. Perhaps you and the rest of the docker team could look into that?

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