double or single precision

astrocrab
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Topic 198136

hello!
it's unclear to me, does e@h use DP or SP for gpu crunching?
i'm trying to find most effective gpu for e@h.

Mike Hewson
Mike Hewson
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double or single precision

Quote:
hello!
it's unclear to me, does e@h use DP or SP for gpu crunching?
i'm trying to find most effective gpu for e@h.


To my knowledge they are SP ( 32 bit ) operands. The main merit is in the parallelisation, so the more compute units the better. Bikeman/HB is the real whiz at this stuff ...

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

astrocrab
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so, fury x seems to be the

so, fury x seems to be the crunching leader with it's 8600 gflops of SP?

Mumak
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E@H is SP. There are just few

E@H is SP. There are just few other projects that can utilize DPFP (e.g. Milkyway@Home).

-----

Bernd Machenschalk
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We try to restrict to single

We try to restrict to single precision wherever possible. The Radio Pulsar searches (BRP) are single precision only, the Gravitational Wave searches (of which we occasionally have GPU versions) are mostly single precision, but a few operations still need to be performed in double precision.

BM

BM

Sasa Jovicic
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Bernd, can you be more

Bernd, can you be more precise please? In the next few months I will build my new PC and E@H is my priority project so I need more information about these "few operations" in double precision.

Bikeman (Heinz-Bernd Eggenstein)
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RE: Bernd, can you be more

Quote:
Bernd, can you be more precise please? In the next few months I will build my new PC and E@H is my priority project so I need more information about these "few operations" in double precision.

Sorry, neither Bernd nor anyone else from the development team can be more specific, because as far as apps with double precision are concerned, we are talking about things that are yet to come. I guess it's fair to say that you will want to have a card that is capable of doing double precision, but double precision performance should not be your primary concern in choosing which card to buy.

HB

Filipe
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Is there any plans to use

Is there any plans to use GPU's for the current GW S6 run?

Bikeman (Heinz-Bernd Eggenstein)
Bikeman (Heinz-...
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RE: Is there any plans to

Quote:
Is there any plans to use GPU's for the current GW S6 run?

No, the current S6 GW run will finish on CPUs only.

HB

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