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D2OL and Hyperthreading

X

Xemus

Senior member
D2ol work the same way as SETI with regard to Hyperthreading-run two instances of it, or is there a way to specify dual CPU's?

Thanks.
 
As far as I know, there is no built-in way to run 2 instances of D2OL.. But, just as with some other projects people have found ways of running it in Dual. Unfortunatly I don't know any. It probably won't work by just copying the folder and starting it again 😉
I would like to know the answer, also have a dually running one instance.
 
Well, at the moment, I just installed it to two different directories and have them both running. This seems pretty RAM intense (luckily I have a GB in that machine), but with only one process running, the CPU utilization stays at 50% max.
Same thing happened with SETI and that's how I solved it. Just curious. Anyone else running it on a Hyperthreaded?
 
Originally posted by: Xemus
Well, at the moment, I just installed it to two different directories and have them both running. This seems pretty RAM intense (luckily I have a GB in that machine), but with only one process running, the CPU utilization stays at 50% max.
Same thing happened with SETI and that's how I solved it. Just curious. Anyone else running it on a Hyperthreaded?
Click to expand...

That's how you have to do it.
 
Originally posted by: Xemus
Well, at the moment, I just installed it to two different directories and have them both running. This seems pretty RAM intense (luckily I have a GB in that machine), but with only one process running, the CPU utilization stays at 50% max.
Same thing happened with SETI and that's how I solved it. Just curious. Anyone else running it on a Hyperthreaded?
Click to expand...

i tried running 2 instances but it brought my pc to its friggin knees. the ram usage was so high that it crippled anything else i was doing 😕
 
Originally posted by: Unforgiven
Originally posted by: Xemus
Well, at the moment, I just installed it to two different directories and have them both running. This seems pretty RAM intense (luckily I have a GB in that machine), but with only one process running, the CPU utilization stays at 50% max.
Same thing happened with SETI and that's how I solved it. Just curious. Anyone else running it on a Hyperthreaded?
Click to expand...

i tried running 2 instances but it brought my pc to its friggin knees. the ram usage was so high that it crippled anything else i was doing 😕
Click to expand...

Hmm, just checked the general speed of that machine now, still fast as ever. It has a 2.8c P4 and a GB of PC3200 tho, so that probably helps. How much RAM did you have, unforgiven?
 
512 of dual channel pc3200. it was using 75-100 megs per instance of d2ol when i tried it last week...needless to say i decided it wasnt the way for me to go in finding a project that would be of minimal resource usage.
 
Hmm, Dockwin.exe is using 54 MB and d2ol.exe is using 22 MB. That's 154 MB for two of them. Ouch.
 
Originally posted by: Unforgiven
512 of dual channel pc3200. it was using 75-100 megs per instance of d2ol when i tried it last week...needless to say i decided it wasnt the way for me to go in finding a project that would be of minimal resource usage.
Click to expand...

I know. 🙁 That's what made me quit it. Especially on a bunch of 512MB gaming machines that's killer. Now I run Lifemapper which uses aroung 6MB of memory. 🙂

-Por
 
Originally posted by: Xemus
Well, at the moment, I just installed it to two different directories and have them both running. This seems pretty RAM intense (luckily I have a GB in that machine), but with only one process running, the CPU utilization stays at 50% max.
Same thing happened with SETI and that's how I solved it. Just curious. Anyone else running it on a Hyperthreaded?
Click to expand...

Ah. I was wondering about why I was getting only ~50% utilization. Just fired it up on new P4 2.8 (OC->3.18, 900 FSB). Have 512MB dual channel running at DDR400. Will I need more memory to run dual D2OL's? Well heck, I'll just give it a shot.

Hyperthreading is great, but I'm surprized it behaves so as to not use all the available cycles. I guess you have to run separate threads in order to make full use of them. Multiple threads seems like an no-brainer for a DC project. It seems like the DC folks could get an awful lot more cycles out of these modern machines if they could detect hyperthreading capability and launch separate threads. In the meantime, I guess it's up to us TA folks to DYI.
 
I just bench'ed various configurations. With one client running I got exactly then same level of production with HT enabled as disabled.

I installed a second client (in a separate directory) and tried it alone both with and without HT - same result.

I then fired up both clients with HT. The production level dropped by 34.25% for each of the two clients. That made for an overall production increase of 31.5% over the single client case.

I also found, as did SilverBack, that it didn't affect my use of other apps (haven't tried serious games).

So all of you D2OL'ers with HT machines, give the 2-client model a shot! We need every cycle we can get to hold off the raveging heards.

Just for completeness - P4 2.8 (oc to 900MHz FSB, or 3.15GHz), 512MB dual channel DDR400.
 
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