openmosix-2.6

Hi Felipe, Gianluca, et al,

   Regarding 2.6.   

One of the problems with 2.6 is that communications between remote and home nodes isn't done very well.  There are race conditions and no synchronicity between nodes, so it's very easy for a process to crash.

The solution to this that Tab and I came up with is to use a kernel deamon.  The daemon, kcomd, handles the communications instead of the processes themselves doing it.   The processes create packets and inform kcomd they have a packet waiting, and kcomd takes it and sends it appropriately.  It receives packets and gives them to the processes safely.   It also written to be SMP and preempt safe.  I'm currently working on it and the foundation is mostly there.

I will send a patch next week to the list so people can look at it.  I need help looking for bugs and bad design decisions on my part.   I'll start modifying the rest of the code to use it after that.   

I highly doubt that this is the only big problem with om-2.6,  but it is a major one so this should give a push to getting a working om-2.6 out the door by year's end.

Matt


>>> Gianluca <[email protected]> 07/07/06 9:26 AM >>>
Dear Felipe,
I think that OpenMosix (and Mosix in general) is a good solution for
your processing.
But, If you are in trouble with OpenMosix and SATA... you can try with
Mosix and SATA (http://www.mosix.org).
In fact, the OpenMosix is the opensource fork of Mosix project.
But, there is an official Mosix patch for 2.4.32 kernel.
I don't know when OpenMosix 2.6 will be released... but my hopes to see
openmosix 2.6 released this year are very little!! :-(
It seems that there is a very slow developing of OpenMosix 2.6 ... and
no more support for 2.4 kernels :-( :-(
I don't know why.

Ciao,
Gianluca

Felipe ha scritto:
> Hi Gianluca and Jürgen
>
> My conclusion is:
>
> My PCs are dell optiplex GX620 and these have the controller ICH7
> chipset  for sata disk and the libata for it controller have not support
> for kernel 2.4.26.
>
> What do you think? and how can resolve this problem?
>
> It is my first experience with cluster hpc. The aim of this cluster is
> procesing statistic data 
>
> is the om the correct software for these aim?
>
> according to my investigate YES is correct, but i want to know your
> opinion
>
> do you know when the om for 2.6 is stable?
>
>
> thanks in advance
>
>   


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Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
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