Hi,
I have Win10 PC which has been running fine at 100% for more than a year, but has suddenly started halting tasks stating "waiting for memory".

There is nothing else running on the PC, nothing changed, and the settings do not appear to be limiting.
- Task manager shows it is using just 15GB of 32GB.
- The PC is 32 thread, but currently only using ~32% CPU.
- Computing preferences on this machine allow 95% of memory to be used when in use, and 98% when not in use.
- Page file size usage is set at 85%.
- Disk limitations are fine - there is lots of free space.
- I fiddled with the page file size under Windows and set it manually as it's 5GB (system set) was mostly used, so set 5GB to minimum and 10GB to maximum - but did not help (also thought that was SDD based not RAM anyway).

Tasks running are 10xLHC CMS simulation 50.00 under vbox + 1xRosetta + 2xPrimegrid on GPU's.
Paused tasks waiting for memory are 15x mixed Rosetta/WorldCommunityGrid.

What could be causing this inadequate usage of the provided resources?

Thanks for any suggestions, Far

You're returning only errors on LHC. I found your system there, 109 erroneous CMS tasks. Best go ask on their forums what's up with that. It's possible their memory requirements changed and that you cannot run 10, 16 or 32 tasks at the same time with only 32GB of memory.

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Thanks Jord, will do