I recently read the paper on upcoming generalized stream fusion in vector
and DPH
libraries. It seems to be very interesting development. I am now starting to experiment with DPH
(starting with GHC 7.6, and plan to upgrade to 7.8 SIMD version when it comes out). I also see from Repa
library documentation that it can do the parallel array work. Repa
seems to be the mature version compared to DPH
which wasn't deemed ready as of GHC 7.4. Now that DPH
seems to be maturing, I am wondering what are the main pros and cons between Repa
and DPH
packages, as of GHC 7.6. I searched StackOverflow and google, but couldn't find comparisons between Repa
and DPH
. Hence, this question.
From the page about DPH on HaskellWiki:
DPH focuses on irregular data parallelism. For regular data parallel code in Haskell, please consider using the companion library Repa, which builds on the parallel array infrastructure of DPH.
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