Previous threads on page faults don't seem to address this particular issue:

I'm gettng lots of page faults on minirosetta 1.80 work units (deltas of a few thousand, totals of millions). But Task Manager tells me that only about one third of physical memory is in use. Why would there be *any* page faults with unused memory?

This is an i7 920 with 12GB RAM running Windows 7 x64 RC.

These work units are memory hogs - one currently has a peak working set of 353 MB and there are currently 8 of them running on this hyperthreaded quad processor - but that's still only a fraction of the available memory. BOINC preferences are set to use 90% of memory. What don't I understand about paging?

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/Dave
www.damouth.com

Not sure...

but HyperThreading w/ Rosetta isn't recommended as far as I've read in this forum.

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With 12GB of memory, I shouldn't think the HT would be a problem. I believe what you are seeing are "soft" page faults. Quite a lenthy discussion in this thread:
https://boinc.bakerlab.org/rosetta/forum_thread.php?id=2057

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Rosetta Moderator: Mod.Sense

Previous threads on page faults don't seem to address this particular issue:

I'm gettng lots of page faults on minirosetta 1.80 work units (deltas of a few thousand, totals of millions). But Task Manager tells me that only about one third of physical memory is in use. Why would there be *any* page faults with unused memory?

This is an i7 920 with 12GB RAM running Windows 7 x64 RC.

These work units are memory hogs - one currently has a peak working set of 353 MB and there are currently 8 of them running on this hyperthreaded quad processor - but that's still only a fraction of the available memory. BOINC preferences are set to use 90% of memory. What don't I understand about paging?

The developers need to check whether workunits compiled to run under 32-bit versions of Windows can run under x64 using memory beyond the 4 GB that 32-bit addresses can specify directly. If not, all your minirosetta workunits need to fit into the lowest 4 GB of memory, using the rest of the memory only for soft paging, until you get a minirosetta version compiled to run fully in 64-bit mode.