Re: [pocl-devel] Debugging auto vectorizer

[Timo B. <tim...@gm...>]

Dear All,

I have on my Kaby Lake laptop hand-vectorized the routine by processing
items in multiple of 8.
The performance of POCL is now within a factor of two of the Intel OpenCL
runtime with auto-vectorization.
So while not perfect this is good enough for us, and when Intel is
available we can
easily automatically switch to a corresponding Intel optimized routine.

Best wishes

Timo

On 8 February 2018 at 23:15, Michal Babej <Fra...@ru...>
wrote:

> Hi,
>
> Nicholas Curtis <nic...@uc...> wrote:
>
> > Does LLVM have to be compiled in Debug mode in order for the output
> > to work?
>
> Not sure if it has to be Debug, but i've noticed that it doesn't work
> with all LLVM builds. It fails on my distro's LLVM, but works on my own
> LLVM build (RelWithDebInfo+Asserts).
>
> -- mb
>
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-- 
Dr. Timo Betcke
Reader in Mathematics
University College London
Department of Mathematics
E-Mail: t.b...@uc...
Tel.: +44 (0) 20-3108-4068
Fax.: +44 (0) 20-7383-5519