Memory on Scyld systems

[Art Edwards]

I have a question about memory on AMD-based clusters. I am now running
a homogeneous Scyld cluster with 768MB on each node. I have modified the 
config file with a mem= command and have had no problems. Now I am augmenting 
the cluster with new nodes that have 1.5 GB of memory on each node (single 
processor nodes). Is there a way to use a different config file for the new 
nodes? 
Also, I have heard that there have been problems with 1.5 GB memory for some systems. Is this a consistent problem?

Art Edwards

P. S. I'm running Scyld 27Bz-7