Re: misc. openmosix questions.

On Thu, 2006-04-06 at 11:44 -0500, Michael C. Wu wrote:
> Hi Everyone,
> 
> I am new on the list, and just have some questions.  These may be FAQs, but 
> I've tried google'ing and reading the links on openmosix.org.  Either the 
> information is really old, or they are not clear.  If you could help me with 
> this, I'd appreciate it. :)
> 
> 1. Ideally, I'd like to run OpenMOSIX on Linux 2.6.x natively on AMD_64 on 
> Gentoo.  However, what is the status of the code?  Should I be running in 
> i686 mode on X86_64 hardware on 2.4?  If we had to run on 2.4 and i686 mode, 
> is there any significant tradeoff?
> 
Unless you are a kernelhacker or want to run on beta code you should go
for 2.4 .. 2.6 is still in development.

> 2. Has anyone had OpenMOSIX automatically forward processes started by 
> Matlab  7?  Does it work?  Theoretically, since Matlab sees one big oM 
> machine, I only need licenses for users on the main node, right?
> 
As documented extensiveley on the wiki people seem to have a mixed
experience with getting mathlab to migrate,  the -nojvm option solves
the failure to migrate however doesn't help on increasing performance as
mathlab seems to be very system call intensive.

> 3. Our computation requires constant disk I/O, what would be the recommended 
> way to connect to our fileserver in oM?  NFS? OMFS?
> 
 
We removed oMFS from openMosix
In 2.6 today I'd say some iSCSI setup, but as we are not there yet.. 

> 4. I plan on channel-bonding with 2 GigE for each node.  I only see a very 
> short page on this in the how-to.  Is there any trick to this, things to 
> watch out for?
> 
Bonding depends on your switching infrastructure...  on the linux side
it is easy.


> 5. The computers running as slave nodes will also be users' desktops.  Can I 
> safely give them accounts locally to slave nodes?  If they start computation 
> on the slave node, the processes should migrate efficiently right?
> 
I don't really un derstand your question here..


> 6. I want to have checkpointing of processes.  It seems that there is 
> existing infrastructure.  Which package should I use?
> 
chpox on openMosix 2.4

> Thanks,
> Michael
> 
> 
> 
> 
> 
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> 
-- 
Kris Buytaert <mlkb-1zPVpAQ/[email protected]>


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