[Openmosix-devel] > 2 Gig Memory Problem

[Shane A. <sabraham@STRATNET.NET>]

Hi all,

Firstly, congratulations to all involved in this project.  I have found =
Openmosix to be an excellent alternative to expensive commercial load =
balancing and scheduling apps.

This is my first post to any OpenMosix lists even though I have been =
deploying OpenMosix clusters for about six months now. =20

The main reason for my posting is the > 2Gig memory issue.  I have seen =
some other posts in this regard but no commitment as to when or whether =
this problem will be addressed.  For the most part the limitation has =
not been an issue but I have recently deployed an 8 node Dual 2.4 Gig =
Xeon Cluster each having 4Gig of memory.  The problem now is that the =
ASIC simulation processes that are being run on the Cluster quite often =
will use all of the available memory on a particular node.  Openmosix =
seems to only migrate a process (simulation process)  if there are =
already two processes running on a node.  I am assuming that this is =
reasonable due to the fact that there are two CPU's and each process =
uses one.  This still poses a problem though due to processes not being =
migrated due to memory constraints on the node. In cases where each =
process uses in excess of 2Gigs on a node I would like to see the =
process migrated to a node that is better equipped memory wise to handle =
it.   Again I am assuming that  Openmosix sees available memory as zero =
on all nodes and therefore ignores memory as a cost difference.

If anyone can give me some information on whether this limitation is =
being addressed or if there is some way that I can solve it myself.

Regards

Shane

 =20