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GPU vs. CPU computations Árni Einarsson Jacek Kolodziej.

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Presentation on theme: "GPU vs. CPU computations Árni Einarsson Jacek Kolodziej."— Presentation transcript:

1 GPU vs. CPU computations Árni Einarsson Jacek Kolodziej

2 3x3 image filters Edge detection Computations only

3 3x3 image filters Edge detection Computations only

4 3x3 image filters Edge detection Computations only

5 3x3 image filters More computation than lookups

6 3x3 image filters

7 Edge detection CPU computation time depends on input data, can be up to 100x slower (!) Possible reasons: –CPU jump predictions (?) –Cache management (?) –Dependant on input data in multiplication (?) –… (put your ideas here)

8 Water surface simulation Computations only performance

9 Water surface simulation Computations & visualization (with synchronization)

10 Water surface simulation Computations & visualization (without synchronization)

11 Questions ?

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