On 22 Oct 2007, at 19:37, Robert G. Brown wrote:
...
If we wanted to make a small compromise and perhaps manage a very few,
very standard peripheral devices and maybe make it easier to run
different programs, we might right the smallest possible operating
system -- something capable of taking a portable binary that we
want to
run and loading it onto the CPU to run, while providing it with some
more or less fixed entry points into code for e.g. reading or writing
disk, maybe a network device (trickier, because of the asynchronous
problems there), and of course managing memory. Let's name our
creation
"DOS" just for grins.
...
I'm just curious. Who runs their cluster nodes at level 1 or 2 (plus
networking as needed)? Anybody? Show of hands?
Seems to me that your "DOS" could equally be a description of SUNMOS
(http://en.wikipedia.org/wiki/SUNMOS) and its descendants, which
(AFAIK) are still in use at Sandia running significantly large
clusters solving production problems.
Indeed Cray's Unicos/ic (the node os in the XT machines) describes in
a similar way, and may even be the latest Sunmos descendant, if not
it's certainly philosophically close.
So the answer to your question is likely "Quite a lot of people".
(Or, maybe, a few people, but they have a *lot* with a lot of nodes :-))
--
-- Jim
--
James Cownie <[EMAIL PROTECTED]>
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