First I want to stay out that I am usually not the guy who moans about less credit granting projects. And -whatever I state out below- will not diminish my commitment in the leiden classical project.
In my opinion the Leiden project is very mean with the granting credits. For example I picked up a result of two computers; the A6 is mine but I also have an quite equal FX-8150 as the other volunteer in this example has.
A FX-8120 with a floating point speed of 2618.62 million operations per second (megaflops) and
8314.87 million integer operations per sec (mips) needed 8337.61 seconds and claimed 51.97 credits
My A6-3420M with 1455.91 megaflops and 3913.09 mips needed 10355.21 seconds and claimed 32.17 credits.
Outcome: For each of them 32.17 credits were granted. Questions:
1) Why wasn’t the FX-8120 much faster than my mobile A6 ? I think both of us didn’t play a hardware intensive 3D-game in parallel but only do some office work or watching a video in the background while crunching
2) Why is it always the same that the less claimed credit is granted – some other projects are going to grand the higher one or even grand a ‘goody’ in top the higher one
3) And in general the claimed / granted credit is quite less. If I compare this with other projects who use ‘single-cpu work units’ (and without GPU of cause) e.g. POEM I get 70 credits for 8763.54 seconds CPU runtime / crunching time. By the way POEM is not one the ‘credit boosters’ like primegrid, collatz conjuctur, milkyway or similar.
4) How is the ‘claimed credit’ calculated – seems not to have something to do with the capability of the CPU and the predicted GFLOPs of the work unit but more like a random number between 30 and 70, isn’t it?
Another point of critics is the very short time period you have to calculate (crunch) a work unit. I show sympathy for the students / projects and their wish for fast results, but I think 4 days is quite short if you don’t have a machine in 24/7 operation mode. If you only let your PC crunch 1-2 hours a day (in the evening after work) you can’t effort a day off without risking a delay and zero credit at the end. What do you guys out there and the project admin’s think about longer grace period of e.g. a whole week?
Overall I think Leiden could have much more participants with other rules in this topic(s).
Wish you all a good progress in all your projects and a nice crunching time,