we have the following problem. We have 30 identical nodes in a queue. All nodes have 64GB RAM. After some
time all nodes are showing different free memory (between 48GB up to 61GB) WITHOUT running any jobs.
The system processes are the same, no zombies, ...

BAD node:
node22:~ # cat /proc/meminfo 
MemTotal:       66066804 kB
MemFree:        49673020 kB
Buffers:        12298540 kB
Cached:          1467596 kB
SwapCached:            0 kB

GOOD node:
node08:~ # cat /proc/meminfo 
MemTotal:       66066804 kB
MemFree:        63056704 kB
Buffers:          814328 kB
Cached:           668740 kB
SwapCached:         6528 kB
Any idea to avoid this problem ? (Jobs looking for >50GB will not start)

Bye, Peer