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Would it be possible to accelerate Guetzli on a GPU?
by 21 10y ago
Would it be possible to accelerate Guetzli on a GPU?
- pitaj 10y agoIt appears that FFT can be GPU accelerated. Nvidia has cuFFT which claims to be 10x faster.
- dbaupp 10y agoI'd expect this to behave quite differently to cuFFT: the transforms are likely to be small (either length 8 1D FFTs, or 8x8 2D FFTs) and thus synchronisation overhead is likely to dominate if one was to try to parallelise within a transform (other than via SIMD). However, this small size does mean that the transforms can be written out to have "perfect" data transfer and branching behaviour, so that they parallelise well at JPEG's natural parallelisation granularity (the 8x8 pixel blocks).
- vladdanilov 10y agoIt's block-based so definitely yes.