Hi. We have a machine with 4 CPU core and 8 GB memory (CLC, CC, NC, Walrus on the same machine). To run more instances, we are trying to play with these parameters:

# MAX_MEM=2048
MAX_MEM="16384"

MAX_CORES="8"

It works for CPU core: the cloud are able to use 8 cores for running instances (while only 4 core are physically available). But it doesnt work for memory. The system considers it can use only 7467 MB. We try to use MAX_MEM="16384" and MAX_MEM=16384 (without quotes). The same result in cc.log:

[Thu Jul 30 13:00:30 2009][005623][EUCAINFO ] node=os111yk mem=7647/7647 disk=57198/57198 cores=8/8

So our question is the following: is it possible for the cloud to use more memory than physically available (like using more CPU cores)? In other words, is it possible to share memory between running instances?

Thanks,
Yuri.