Welcome to club, it is a boring fact in WCG overall.

Happens same thing with me with mine QX9770 Extreme since last year in all projects and actually especially in CEP (too bad !). When I ran overclocked the difference increase.

Only WU's from NRW project appear be more equalized in Claimed vs Granted for me, but many times it not happens too.

My differences appear have a little bit less magnitude than yours but it is so huge to not notice.

My guess is that mclaver runs 8 tasks in this i7 and what you see is the effect of hyperthreading on claimed points, at least under Windows. A little before the i7 have been officially delivered I have run some tests in my old P4 HT to see what really happens when using it as a 2-core processor, i.e. when running two WUs together. I was more interested with effects on the global daily throughput than with points but I learned a lot too in this area.

To make it short, with HCC WUs which are more or less all the same size
- one WU alone was taking about 10 hours of runtime (and wallclock time too) and was claiming, say, 70 credits (as in most other machines)
- two simultaneous WUs were taking about 15 hours of runtime each (and wallclock too) and were claiming 100 credits.

For the throughput this is fine since in 30 hours I can process 3 WUs in single mode and 4 in pseudo dual-core mode. But regarding credits and runtime it is rather unfair because this machine is now getting 2 days of runtime per day instead of one, although it is doing only 25 % more work. Fortunately, for credits the unfairness is lowered because in most cases these WUs are paired with "normal ones" and they are generally getting the "normal" credits (70 in this example) or only a little more.

If HT has the same effect in the i7 as in the P4 HT** that explains that you are consistently getting much less credits than you are claiming, but globally more than if you were running only 4 WUs at a time (my P4 has seen its RAC jump considerably).

Cheers. Jean.

** From tests posted by Movieman it seems that Windows is not better with runtime in the i7 than in the P4. Since runtime is actually called CPU time a given task should use more or less the same "CPU time" to be processed, whether it takes 10 hours of wallclock or 15.

Hello mclaver,
I have to wait to see how hyperthreading on the i7 works out, but it is possible that it will claim credit at the full rate for each thread, even though a hyperthreading thread will only run at 60%-65% of full speed.

Lawrence

So I need to be paired up with another machine hyperthreading and I can get lots of extra credit!!!!!

Since the Rice seems pretty consistent, all of my work units show cpu time of about 10 hours. The claim credit is between 215 and 233, the granted credit is between 154 and 176. How does this compare to your example of 70 per work unit for rice?