LingVM is an Erlang VM that runs directly on Xen

[byaruhaf]

https://medium.com/@kansi/bare-metal-erlang-hello-world-9cea0ea702ea#.x35llacz4

[jo909]

Code running as a VM in the Xen hypervisor is not really the traditional sense of "Bare Metal".

[oomkiller → jo909]

Yep. Fortunately, you can also build a RumpRun Kernel using Erlang as of a few months ago. I haven't tried it yet, but it sounds like it could provide true bare metal.

[jo909 → oomkiller]

Not meant as criticism, but a (maybe fruitless) theoretical discusson:

Even with RumpRun on true bare metal, should that be called "Bare Metal Erlang"? It's not like the erlang code manages the raw memory, contains a driver for the hard disk controller etc.

Clearly there are fewer layers between the erlang code and the bare metal compared to a traditional OS, but still plenty and they do quite a lot of work.

[jacquesm → jo909]

I agree, bare metal != a bare vm or some other abstraction layer, bare metal indicates you talk directly to the hardware.

[rjsw → jo909]

Feel free to write drivers in Erlang for every disk controller and network card that are available.

[jo909 → rjsw]

Well that is probably never going to happen. And that's totally fine with me, there is not mutch to gain from that anyway. Unikernels running on hypervisors is a very cool thing, but I wouldn't call it "bare metal".

[andyl]

Very interesting - might be a great way to setup a sandbox for untrusted code.

On a related note: there is also the nerves project for embedded Erlang/Elixir - http://nerves-project.org/