So, I've only been running things (I think, despite what it says about my start time) since the new credit system went into effect, so I think that's not part of the issue.

However, the first machine I put this on was a windows XP laptop. The units I was running were generally around 10k seconds time, claiming 40-45 credits per unit, and being granted 10-15% more credits than that per unit.

The next machine was a MacBook Pro, with a CPU only a hair slower than the XP box (2.16GHz vs 2.33GHz of the same make and model CPU). It gets around 15-20 credits claimed per unit (of ~10k second units), and is granted 10-15% less credits per unit.

I was wondering if there was a heavy windows bias, just based on that, but now I know there definitely is. The reason is that I installed ubuntu on the XP box, and it's now getting 25-30 credits per unit (but still being granted less than that).

So it would appear that the windows client is faster than the linux client, which is faster than the mac client.

So I was just wondering if anyone in the know would like to comment on that. (All of this is done with the generic client on each machine, if anyone's wondering.)

Thanks.

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the T2600 is a Core Duo (Yonah) CPU whereas the T7600 is a Core2 Duo (Conroe). Conroe is quite a bit more efficient (although they're both good CPUs):

http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2808&p=6

There are differences between the different OS's but I don't think they're particularly profound. Maybe it was under more load or getting more cache-swapping when running the graphics-intensive OSX? XP is possibly better optimised as the compilers have been around longer...

HTH
Danny

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Hello AmusingFool,
A few weeks ago I installed Ubuntu as a dual-boot, next to my Windows XP. Boinc on Linux was (at first) crunching much less credits than XP. After checking out some other threads (eg https://boinc.bakerlab.org/rosetta/forum_thread.php?id=3593) I realized my AMD 3000+ didn't run its normal 1.8 G Hz but slowed down to 1 G Hz because the low priority R@h appication didn't urge Linux to go faster.
Now My single core machine crunches more credit running Ubuntu than XP (in the same period of time).

Well, this is of course one point of view, this might be different on a multi-core machine.

Have a nice day,
Path7.

Hello AmusingFool,
A few weeks ago I installed Ubuntu as a dual-boot, next to my Windows XP. Boinc on Linux was (at first) crunching much less credits than XP. After checking out some other threads (eg https://boinc.bakerlab.org/rosetta/forum_thread.php?id=3593) I realized my AMD 3000+ didn't run its normal 1.8 G Hz but slowed down to 1 G Hz because the low priority R@h appication didn't urge Linux to go faster.
Now My single core machine crunches more credit running Ubuntu than XP (in the same period of time).

Well, this is of course one point of view, this might be different on a multi-core machine.

Have a nice day,
Path7.

Make sure "Cool n Quiet" is disabled in BIOS and try the Linux again.

Thanks for the pointers. I found out that the CPU was running at far less than top speed (less than half, actually)... After some poking around, I discovered how to fix that. I also poked around with renice-ing boinc. It didn't do much until I renice'd the actual rosetta applications themselves (since they default to a nice level of 19, does anyone who knows python know how to change that?). I still need to see if renice'ing will do anything on the macs.

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How much does that cool'n'quiet take out of your cpu speed?
I have a 64 2800+ runing win xp sp 2.

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How much does that cool'n'quiet take out of your cpu speed?
I have a 64 2800+ runing win xp sp 2.

it reduces the clock speed dependant upon the CPU load, but depends upon the OS as to whether low priority tasks are considered as load...

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How much does that cool'n'quiet take out of your cpu speed?
I have a 64 2800+ runing win xp sp 2.

It typically drops the CPU to 1GHz on my puters.

How much does that cool'n'quiet take out of your cpu speed?
I have a 64 2800+ runing win xp sp 2.

It typically drops the CPU to 1GHz on my puters.

Just in case anyone cares, renice'ing the rosetta programs in linux seems to've made a very large difference in credit. However, it seems not to've made any difference at all under OSX (intel or PPC). Kind of weird.

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Here's an interesting thing. While I disabled the Cool n Quiet feature after putting in my new motherboard, processor and new memory, I decided to activate it and see what it did when I ran Rosetta. Now I have XP sp3, a new AMD X2 7850, and DDR2 memory that I only run at 800mhz because dual channel isn't supported at 1066mhz. After setting it all up, the Cool N Quiet will let the processor run at full speed when Rosetta is running, which is 2800 mhz, and only idles it back when I put Rossetta on snooze, to about 1400mhz. I tested it by changing the power scheme to home/office, which seems to disable Cool N Quiet without having to go all the way back into the Bios, and when I put Rosetta on snooze, the processor speed stays the same, even if the processor isn't under load anymore. I think I will leave it on, for the strange occasions that Rosetta stops and I'm not around, or my kids messes with something, at least it will save me a little electricity.
I will also monitor my credit to see if it takes a hit, but it seems that CnQ will let Boinc run Rosetta full blast for my computer.

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