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-   -   Idle laptop processer time--> For a Good cause (https://www.flyertalk.com/forum/travel-technology/350291-idle-laptop-processer-time-good-cause.html)

Plato90s Jul 2, 2007 7:49 pm


Originally Posted by birdstrike (Post 7990219)
I just upped my 3Ghz system to 3GB RAM. We'll see if that makes a difference.

Probably not.

The big advantage the server CPU's that I'm using has is the large L2/L3 cache compared to desktop models. The data sets being crunched by FAH is small enough to fit in those caches, so the data transform is much faster.

The reason PS3's are even better is because the folding algorithm is probably very amenable to parallel processing, and the GPU's use even more fast cache memory than servers do.

birdstrike Jul 2, 2007 8:03 pm


Originally Posted by Plato90s (Post 7994065)
The big advantage the server CPU's that I'm using has is the large L2/L3 cache compared to desktop models. The data sets being crunched by FAH is small enough to fit in those caches, so the data transform is much faster.

Interesting. I though that your high score vs. relatively few work units was because you were crunching larger datasets than usual.

MoonPet Jul 2, 2007 9:34 pm

I've just joined the team as MoonPet.

I used to be part of the SETI project way way back.

I'm not sure that I fully understand all of the information on the screensaver though. Is it possible that it it going to take three days to finish the work unit? Is there some kind of setting I might have wrong? My laptop is relatively new and I'd like to think that it can work a little faster than that!

birdstrike Jul 2, 2007 9:40 pm

That could be about right. My 3GHz machine will finish it's next WU on Sunday, July 8th.

Plato90s Jul 3, 2007 5:58 am


Originally Posted by birdstrike (Post 7994128)
Interesting. I though that your high score vs. relatively few work units was because you were crunching larger datasets than usual.

The F@H program makes decisions on work units to download based on what it sees. So the SMP client, when it sees server-design CPU's, probably chooses bigger work units. How many steps does the work unit show? Mine always shows 500k steps.

But each "step" being crunched is actually relatively small. The total on-disk size of the work units isn't large.

The memory footprint is actually pretty small, so adding main RAM doesn't change the equation very much.

GadgetFreak Jul 3, 2007 7:12 am


Originally Posted by Plato90s (Post 7995609)
The F@H program makes decisions on work units to download based on what it sees. So the SMP client, when it sees server-design CPU's, probably chooses bigger work units. How many steps does the work unit show? Mine always shows 500k steps.

But each "step" being crunched is actually relatively small. The total on-disk size of the work units isn't large.

The memory footprint is actually pretty small, so adding main RAM doesn't change the equation very much.

Im running the SMP client on Linux and it also pulls 500,000 step work units.

birdstrike Jul 3, 2007 7:52 am

Looks like I need to buy a bigger machine :)

unkfrank Jul 3, 2007 8:00 am

Better late than never
 
Add another user to the team - UnkFrank :) ^

Plato90s Jul 3, 2007 8:21 am


Originally Posted by GadgetFreak (Post 7995904)
Im running the SMP client on Linux and it also pulls 500,000 step work units.

Probably why the work units you pull down are similar to mine. I see you have 1,385 and 1,760 points/work unit. That's about what I get, although there are some ~1,500's mixed in with my processors.

GadgetFreak Jul 3, 2007 9:07 am


Originally Posted by Plato90s (Post 7996257)
Probably why the work units you pull down are similar to mine. I see you have 1,385 and 1,760 points/work unit. That's about what I get, although there are some ~1,500's mixed in with my processors.

Right, and it goes through one WU in about 20 hours or so. My old iMac does a smaller work unit in about a week ;)

Plato90s Jul 3, 2007 9:18 am


Originally Posted by GadgetFreak (Post 7996521)
Right, and it goes through one WU in about 20 hours or so. My old iMac does a smaller work unit in about a week ;)

A 2.3Ghz quad-core server CPU can do a work unit in about 13.5 hours. The older Intel cores, like the dual-core 3.0Ghz, seem to be averaging 20 hours.

The good news is that I got a proxy which works, so I might be back on the team now.

GadgetFreak Jul 3, 2007 3:18 pm

Wirelessly posted (TMobile DASH: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; PPC; 240x320) Opera 8.60 [en])

Mine is a month or so old. it is a dual core 2 extreme or something from Dell. As of yesterday the damn Intel Mac SMP clients werent working so i cant run my new powerbook. One question: What happens if i make 8 accounts on an 8 processor Linux cluster and install the Linux SMP client in all of them?

Plato90s Jul 3, 2007 4:12 pm


Originally Posted by GadgetFreak (Post 7998800)
Wirelessly posted (TMobile DASH: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; PPC; 240x320) Opera 8.60 [en])

Mine is a month or so old. it is a dual core 2 extreme or something from Dell. As of yesterday the damn Intel Mac SMP clients werent working so i cant run my new powerbook. One question: What happens if i make 8 accounts on an 8 processor Linux cluster and install the Linux SMP client in all of them?

As long as each of them run in a separate memory space, it'll be fine.

GadgetFreak Jul 4, 2007 3:19 pm

Well the finally have an Intel Mac SMP client (the console one only) that works. So that is another relatively fast processor I can put online. The bad news is that the FT team has dropped to 151 in the rankings. Lots of people seem to be inactive.

Plato90s Jul 4, 2007 4:03 pm


Originally Posted by GadgetFreak (Post 8004240)
Well the finally have an Intel Mac SMP client (the console one only) that works. So that is another relatively fast processor I can put online. The bad news is that the FT team has dropped to 151 in the rankings. Lots of people seem to be inactive.

Actually, the number of active users has been on an uptick.

http://folding.extremeoverclocking.c...php?s=&t=39124

The problem is that there are other teams who are relatively new to Folding@Home but have access to serious horsepower or a larger user base.

BTW - seeing something new. The 1-million step work unit.


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