accelerate

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As described in my thesis, single-pass look-back scans have some performance advantages when dealing with big datasets versus the current implementation in Accelerate. This issue is designed to track the...

Jasonoro

**Description** This PR contains the Accelerate side of my thesis work. It integrates the [POSable](https://hackage.haskell.org/package/posable) library, which generically transforms Haskell 98 data types in the recursive tagged union layout. This...

Riscky

[BUG] typo in Semigroup instance of Exp (Maybe a)

1

https://github.com/AccelerateHS/accelerate/blob/5971c5d8e4dbba28d2017e7ce422cf46a20197cb/src/Data/Array/Accelerate/Data/Maybe.hs#L138 Should that be `cond (isNothing mb) ma` instead?

rajeshpoddar

Object file loading on Windows

5

The CPU backend is currently broken on windows because it lacks an object file loader ([here](https://github.com/AccelerateHS/accelerate-llvm/blob/master/accelerate-llvm-native/Data/Array/Accelerate/LLVM/Native/Link/COFF.hs)). This is the same as what GHCi does, but a bit simpler because we...

tmcdonell

Unary Stencil

6

**Description** Adds the option to have a unary dimension in a stencil. **Motivation and context** Cleans up the interface a bit, and using such a unary dimension should also make...

dpvanbalen

**Description** Allow indexing into the existing `Vec` primitive to enable branchless, constant time, memory reads with runtime offsets. Especially useful for having a local chunk of memory during an `Exp`...

HugoPeters1024

Add errors and assertions to Acc computations

6

**Description** This pull requests adds throwing functions, similar to `error` from the Prelude, and assertions to our Acc language. I added three functions to throw an error: - `aerror ::...

ivogabe

Support GHCJS compilation

7

**Is your feature request related to a problem? Please describe.** GHCJS cannot compile `accelerate`. **Describe the solution you'd like** GHCJS to successfully compile `accelerate`. **Describe alternatives you've considered** Don't use...

justinlovinger

Speed up test suite

10

The standard accelerate test suite, used by all the backends, can be quite slow. Several of the tests are significantly slower than the others, for example segmented folds and scans,...

tmcdonell

`inconsistent valuation @ shared 'Acc'` when trying to lift non-`Acc` function to `Acc`

6

**Description** I am working on a machine learning/mathematical optimization library with `accelerate` for array computation. An optimization algorithm typically takes an objective function, like `A.Acc (A.Vector Bool) -> A.Acc (A.Scalar...

justinlovinger