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Team MacNN Slipping in Rosetta
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Fresh-Faced Recruit
Join Date: Jun 2006
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We just got passed by Boinc Synergy and we're no longer in the top 10 either overall or daily.  I fired up the XServe to help, but we'll need more than that to keep up. Are there any Intel Macs out there running Seti that could switch over to Rosetta? Any hope for a PPC optimized Rosetta worker? Altivec optimizations would kick some serious tushy if we could get them.
abc
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Last edited by Abecedaria; Dec 3, 2006 at 11:30 AM.
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Posting Junkie
Join Date: Jan 2006
Location: Colorado
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Your Macs need cheerleaders. I'll be the first to sign up. My iMac will help.
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Senior User
Join Date: Jun 2006
Location: Dublin, CA
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Now that all the SIMAP WUs have been slurped up (I got 264!), I'm focusing on getting to 1,000,000 before year end. I'll add 3000-4000/day more until then
Unfortunately, optimized applications aren't possible for Rosetta. Add to that, Macs (esp. PPC) don't do very well at Rosetta.
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Fresh-Faced Recruit
Join Date: Jun 2006
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Good job folks, we're back in the daily top ten! Now all we need to do is stay there for another 148 days in order to overtake US Distributed. 
still..... need.... more..... POWER!
We need you back, Mikkyo! Oh, and I'll probably be losing my XServe for a little while. 
abc
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Mac Elite
Join Date: May 2001
Location: Vancouver
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put some linkage up for the specific project where horsepower is needed and i'll see what i can throw at it as well
[edit] just tried signing up but neither Safari nor Firefox seems to complete the registration process. oh well...
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Last edited by legacyb4; Dec 7, 2006 at 02:04 AM.
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Fresh-Faced Recruit
Join Date: Jun 2006
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Originally Posted by legacyb4 
put some linkage up for the specific project where horsepower is needed and i'll see what i can throw at it as well
[edit] just tried signing up but neither Safari nor Firefox seems to complete the registration process. oh well...
Rosetta Homepage:
Rosetta@home
Team MacNN sign-up page: Create an account
Sign up, then join Team MacNN. Rosetta is the second most popular "Boinc" client project, Seti being the first, and is a really worthy cause whose results can be used to cure a number of diseases. All the details are on the home page. From the FAQ: "Compelling mission, technology that could basically wipe out disease as we know it!"
Stats pages:
Team MacNN : Rosetta : Stats
stats.free-dc.org
Cheers!
abc
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Fresh-Faced Recruit
Join Date: Mar 2005
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I've put Einstein@home on hold and re-tasked all my systems to spend 30% of their time on Rosetta@Home. Every little bit helps, I guess.
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- Fourth Horseman -
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Senior User
Join Date: Jun 2006
Location: Dublin, CA
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Originally Posted by Fourth Horseman
I've put Einstein@home on hold and re-tasked all my systems to spend 30% of their time on Rosetta@Home. Every little bit helps, I guess.
Good call. Einstein's down anyway....
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Professional Poster
Join Date: Apr 2002
Location: Smallish town in Ohio
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My intel iMac will be off the rest of this month due to winter break. Sorry guys 
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Professional Poster
Join Date: Apr 2002
Location: Smallish town in Ohio
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Fresh-Faced Recruit
Join Date: Jun 2006
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Originally Posted by macintologist
You gotta love those Quad Xeons in the Mac Pros and new XServes, eh?
abc
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Fresh-Faced Recruit
Join Date: Dec 2006
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Originally Posted by macintologist
Originally Posted by Abecedaria
You gotta love those Quad Xeons in the Mac Pros and new XServes, eh?
abc
Apparently on the other end of the performance scale, my 1.8 GHz G5 iMac is running Rosetta at 40% share 24x7 and gets a RAC for Rosetta of about 16 (yes, sixteen).
Computers belonging to lpmcclure
The poor performance of the Rosetta app on PPC has been discussed, for example in this Rosetta thread:
Speed of Rosetta app on PPC Macs
The note in this page for Rosetta Applications (above the table) appears to provide an explanation; it says
"Note: the Mac OS X (PPC) application is not optimized and will not fully utilize the PPC processor."
Apparently it is not considered a good use of resources to improve the PPC Rosetta app.
However, an RAC of 16 seems so poor by comparison that I have to wonder if I'm doing something wrong. If this about what I should expect? If yes, then it's really not efficient for this machine to work on Rosetta.
Rosetta introduced a new credit system which went live on August 23:
The new credit system explained
The team MacNN credit daily rate in Rosetta took a precipitous drop when Rosetta's new credit system went live (check out the (green) daily rate chart around August 23):
Team MacNN : Rosetta : Stats
I think the new credit system must have been especially hard on PPC machines.
Earlier in the year I was running 70% Rosetta and my Rosetta RAC was well over 100 as I recall.
This drop in the daily rate for Team MacNN, probably associated with the new credit system and the non-optimized PPC Rosetta app, could explain why Team MacNN is slipping in Rosetta.
Looking on the bright side, over the long run this should be self-correcting as new Intel-based Macs replace the PPC installed base. :-)
lpm
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Senior User
Join Date: Jun 2006
Location: Dublin, CA
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Originally Posted by lpmcclure
Apparently on the other end of the performance scale, my 1.8 GHz G5 iMac is running Rosetta at 40% share 24x7 and gets a RAC for Rosetta of about 16 (yes, sixteen).
Computers belonging to lpmcclure
You did all the right research. I have a similar machine here, running a LOT more projects, yet has a RAC of 186:
http://setiathome.berkeley.edu/show_...hostid=2353775
Also, it gets about what it claims. So since you get much less than you claim, I suspect a *real* problem. If you don't get an answer here, be sure to post on the crunching forum at SETI.
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Fresh-Faced Recruit
Join Date: Jun 2006
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Originally Posted by zombie67
You did all the right research. I have a similar machine here, running a LOT more projects, yet has a RAC of 186:
Computer summary
Also, it gets about what it claims. So since you get much less than you claim, I suspect a *real* problem. If you don't get an answer here, be sure to post on the crunching forum at SETI.
The superbench Mac client was resulting in unfairly high results. The correction was to normalize the results for the amount of actual work done rather than what a computer could "benchmark". So if you are running a superbench client, you will get much lower credit than what you claim. If you run a normal client, your credits should equal your claim.
As to why Zombie's machine get's a higher RAC than lpmcclure.... 
What the superbench client does show is that a PPC optimized worker for rosetta could have a huge impact for our team. I wish we could convince the Rosetta team to give us one...or at least allow someone to code one for them...
abc
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Fresh-Faced Recruit
Join Date: Jun 2006
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FWIW, I am still running the superbench client on my G4 1.67 Powerbook with my request WU time set at 8 hrs. and noticed that the long duration WU's were getting about half the granted credit per CPU minute as the shorter duration WU's. So I switched to a 2 hr. target WU time.
I don't know if I'm giving the same benefit to humanity in the shorter WUs, but my sense is that my RAC seems to be rising
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