Forum > GPU crunching

What is good settings for my ATI R5770?

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KarVi:
Has anybody done some testing into what "-unroll -ffa_block -ffa_block_fetch -sbs" settings works most efficiently for a Radeon 5770?

Defaults seems to be "-unroll 4 -ffa_block 2048 -ffa_block_fetch 1024 -sbs 128", when you use the installer, but must also be based upon less powerfull cards and their abilitys.

Mike:
-unroll 10 -ffa_block 6144 -ffa_block_fetch 1536 should work fine.

Sbs switch not needed atm.

KarVi:
Thanks.

Also got basically the same settings fra Claggy, but had problem getting it to run.

Just got short bursts of 30% usage on GPU, and slow progress in crunching.

But one more restart of boinc seems to have cured it, now crunching with 75-99% GPU usage, and it seems to be faster than with standard settings.

I hope it lasts, time will tell :)

Claggy:

--- Quote from: KarVi on 04 Apr 2012, 05:10:56 pm ---Thanks.

Also got basically the same settings fra Claggy, but had problem getting it to run.

Just got short bursts of 30% usage on GPU, and slow progress in crunching.

But one more restart of boinc seems to have cured it, now crunching with 75-99% GPU usage, and it seems to be faster than with standard settings.

I hope it lasts, time will tell :)

--- End quote ---
That will be the GPU usage Bug a fair amount of us are suffering from, suspending GPU usage, waiting for the app to exit (watch task manager), then resuming often gets high GPU usage again,

Claggy

Mike:
Donīt forget GPU usage also differs on high blanking.

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