LHC@home

lhc is putting quite a strain on my memory usage now.
dual core cpu, so always 2 WUs active ...
lets say we start working on 2 rosetta WUs.
mem usage up to 80 real/240virt per WU
then lhc kicks in, finishes 2 WUs, start 2 new ones, gets a new bunch.
now some of the new ones have an ealier deadline than the current ones, so it preempts the current ones and starts working on another 2...
right now i have 2 rosetta and 6!!! lhc WUs active/preempted.
total mem usage 340 real/760 virt

aint boinc a bit hard to preempt WUs that need like 20mins more running time in favor to start a 6 hour run, JUST cause this other WU needs to be returned 6 hours earlier(but still 7 days in the future)

---

1GB should be plenty on a Windows XP system..

I have 1GB .. with all drivers loaded, antivirus/antispyware, firewall, creative audigy2 driverset & utilities, adobe acrobat speed launch, java update software, hdd monitoring, diskkeeper pro, directupdate (dynamic dns updater), remote desktop, boinc & sixtrac, and windows services, 478MB is in memory and 460 allocated to virtual memory -> virtual page file is 0kb in size (nothing is paging to disk).

Point is with systems > 512MB RAM, windows 2K/XP/2K3 handles virtual memory differently and keeps more in memory for faster access. It will still allocate virtual memory address space but will seldom used it until a certain threshold is exceeded.

If anyone running Win98 installed more than 512MB in their systems .. strange memory-related things would happen- though yours are all NT/2K/XP systems so you're good.

---

Again, like with anything else it depends what one is running. I could well see that a 4 CPU box running Rosseta, one might want more. Rosseta also plans on adding other tests to their WUs, where a thread similar to this was started on their boards.

I can tell you that 512 MB RAM on my winXP Pro box here is beginning to feel tight (though I wasn't swapping like now 2.5 years ago when I built this box), and I would look at 1 GB next. But 2 GBs is only a matter of time. I can also tell you that this one class I'm taking where we've got to setup multiple computers (with Windows Server 2003) in Virtual PC and run it off the hoast winXP system, they have 1 GB and are as slow as hell. Ugh, the labs take forever on those things with 3 OSes running (2 virtual PCs and one host OS). :( :thumbsdown: :(

Without looking at what a person is running, it's kinda hard to advise "that's plenty and anything more is overkill". For all one knows one could have multiple Rosseta WUs running at a time (the Rosseta process takes 140 MB to itself on my comp, according to Task Manager) and does stuff with Photoshop, Auto CAD, or Life Wave on the side...

---

I have 1G in my Dual Xeon and it has 14 in memory BOINC processes including 2-3 Rosetta@Home and 4 or so LHC@Home, and it says it has 276K free and 400K cache ... so, I don't see a huge problem ... but that is just me ...

---