credit on my new phone
7 Apr 2015 17:22:03 UTC
Topic 198039
(moderation:
I recently got a new Samsung Galaxy Note 4 and installed Boinc on it. However, instead of running Seti Beta (like my old one continues to do), I'm running Einstein on it.
Anyway, I'm used to seeing my computers that run Einstein have some value for claimed credit on their tasks, and then a higher value for granted credit. The new phone is consistently getting a lower value for granted credit than for claimed. Why?
David
Miserable old git
Patiently waiting for the asteroid with my name on it.
credit on my new phone
)
Two different methods of assessing what might be a 'fair' way of awarding credit for work done.
The 'claimed' credit column - mostly hidden on current BOINC projects, just Einstein and CPDN are left, I think - uses BOINC's outdated "benchmark speed multiplied by CPU time taken" method.
The 'Granted' column is a fixed value that the Einstein project admins have assessed to be fair for the amount of work done in completing the task, whatever the hardware used.
For ordinary CPUs, the benchmark (Whetstone) probably understates the power of modern CPUs running optimised applications. You might expect the claim to be (moderately) lower than the grant.
For GPUs, the CPU benchmark vastly underestimates the speed of all bar entry-level GPUs. And the CPU time is much less than the total run time. Expect all 'claimed credit' numbers to be minuscule compared to the granted credit.
For Android phones: the benchmark does measure the optimal speed of the phone, rather than just the most basic, unoptimised, CPU functions. If the application sent to your phone doesn't use all the available optimisations (best ask Claggy or H-B about that), it will take longer than expected to complete the task and this will be reflected in the higher 'claimed credit' figures.
RE: If the application
)
This device is getting our best, NEON-optimized application version and it's actually doing very well: well under 20k sec per task, for an ARM Android device this is pretty much as fast as it gets atm.
All BRP4 work units are made the same, whether they go out to an ARM Linux, Intel GPU or ARM Android host, and all will be rewarded with 62.5 credits.
As described above, the client-internal benchmarking results will influence the "claimed credit", but this can safely be ignored.
HB
Okay, thanks, guys.
)
Okay, thanks, guys.
David
Miserable old git
Patiently waiting for the asteroid with my name on it.