Re: scheduler for SF

Andreas--

I need the exact same thing.  I started on some code for this a few
weeks ago, but nothing that works yet.  The idea of my implementation
would be to have two types of SF components:  SFPoolManager and
SFPoolMember.  The members would report to the pool manager
information about that host such as hostname, available ip addresses,
architecture, OS, etc...  Now, as far as the actual scheduling
algorithm, the simplest solution would be to embed some meta data in
your sf scripts like number and type (OS, arch, etc..) of hosts
needed.  Now, the scheduler doesn't have to be very smart.  It just
checks to see if the correct types of hosts are currently available in
the pool.  If so, it passes references for those hosts to the script.
If not, it just waits until more resources are available.

Anyways, that was very stream-of-consciousness.  This example is
complicated by the fact that our pool is heterogeneous and our scripts
use many hosts at once.  If you had simpler requirements, you might
not need any meta data in the scripts.  Currently, I have other
priorities so I don't know when I'll get back to this, so it's
currently just an idea.  Thoughts?

--Phillip


On 1/18/07, Andreas Unterkircher <[email protected]> wrote:
> Hello,
>
> we're looking for a scheduler to deploy components on different hosts.
> For a start our requirements are very simple: we have a pool of machines
> where we can deploy components, the scheduler should decide on which
> machine to deploy new components based on very simple criteria (how many
> components are already running on a certain machine ? no cpu, memory
> usage etc. has to be taken into account). Is there already something in
> SF that we could use for a start to experiment with ?
>
> Thanks,
> Andreas
>
>
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