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D2OL on Dually

mastertech01

mastertech01

Moderator Emeritus Elite Member
Hi, got a dually running now and need help on how to get 2 instances running of D2OL so each processor is running one. Any help here?

Thanks.

PS tried a different folder and it said one instance was already running. I know I have heard of peeps running two on one rig.
 
I am doing it. I installed with the default first. The second I put in program files. This is WIN2K Pro. You may need to make 2 shortcuts to EXE files . You may have a problem with your shortcuts. See where they go. If it`s linux I don`t know. Geoff knows, I used his advice to set mine up. What did you get ?
 
I have a dual AthlonMP 2000 running Win2k. I installed in the default directory and created a second Program Files directory and named it D2OL2. I have 2 full installs done but only one startup link.. working on that .
 
Ok, I just created a shortcut to desktop for the other install so one will be in startup folder and the other I will have to start manually. I now have two instances running. Task Manager shows both Processors running 100 percent. 😀 Thanks
 
I have three installs of D2OL on my dually one is a backup for server problems. This same procedure will work for single proccessor machines the rule is that only one instance per CPU can run at the same time. In other words you could install multiple instances by renaming in different directories. In the event of a server failure you could shut down one instance when it runs low and fire up the other one. If you have the disk space available you will not run out of work. The cache should be flushed if not used for a long time. Do this to avoid redundancy. The two installs are not limited to duallies will work on singles also.
 
ken008 - What a *great* idea! And copy the node file over so you keep a single node with the PC... and if you run one at normal and the other at low, simultaneously, will the 2nd instance only run when the first runs out? 😀

Geoff
 
So far the Dually doesnt crunch that well compared to a single processor. Im running a single Tualatin processor which has done 26 candidates and the dually has only managed 36 with 2 processors and two instances. The stats are only giving me credit for 48 so far also.
 
Yeah.. .the stats don't seem to get updated as often as they used to... the current number are about 45mins old... 🙂

Geoff
 
This is how I ran D2OL on my dually.

Installed D2OL in directory D2OL2 and renamed the exe to D2OL2.exe and put a shortcut in the startup folder.
Then I installed the second one in the default D2OL folder, left the exe name the same and put a shotrcut to it in the startup folder.

It worked like a charm and I didn't have to manually start either of them.
 
Thanks Baldy and Ken008 for your tips... 🙂

Now for the big question... did it run like 2 systems crunching or is there overhead? I have a Gig of ram in the system.. just seems to go slow for a dual setup in that department. OS wise it is blazing fast. One Agent is doing substantially better than the other. Perhaps just a difference in what candidates they are doing? Ram timings off maybe?
 
There was a little difference from 2 single systems but not very much. It was little enough that if you told people it was two single systems they wouldn't have thought it was going slow.

Bring up the task manager and see what program is taking up the cycles that the second instance isn't getting. Both instances should being showing 50% CPU utilization if no other programs are running.
 
Originally posted by: Baldy18

Bring up the task manager and see what program is taking up the cycles that the second instance isn't getting. Both instances should being showing 50% CPU utilization if no other programs are running.
Click to expand...

 
John- the candidates are taking wildly varying times to complete... some take longer to do a single conformer than other take to do the whole candidate. Currently, my 1700 is outcrunching my 1900... and that's with the kids playing games on the 1700 and me only surfing on the 1900 😕

Geoff
 
Baldy they are both using 100 percent utilization of each processor. 🙂

Geoff, I figured that is possibly why the large diff, one agent got better cands to work as it was about an hour difference between times when they came online. Oh well at least its doing a lot better in one box than any single processor machine I have had. 🙂 If it were running the OLD candidates it would probably do near 200 a day.
 
You can compare to my nodes 15388 an 15389. These are 1 gig MP`s @ 1124mhz in a Tyan 2466. Some days they are dead even. It is hard to benchmark D2OL. You would need a control candidate and a way to run it Dspy would monitor it but it would be a pain. To much downtime to do it.
 
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