Sure thing Pekka https://github.com/pocl/pocl/issues/487
On Thu, Jul 6, 2017 at 1:16 PM Pekka Jääskeläinen <[email protected]>
wrote:
> Hi Chris,
>
> Can you please open Github issues of these?
>
> Please attach there the following additional info:
> - LLVM version
> - is it Intel E5-2620 specific -- does it work with some other target with
> the same LLVM and pocl versions
>
> Thanks,
> Pekka
>
> On 07/06/2017 02:26 PM, Chris Cummins wrote:
> > Hi,
> >
> > I have been batch testing OpenCL programs and have encountered a number
> of
> > cases where pocl performs unusually.
> >
> > The first is when compiling a kernel with undefined symbols. In this
> case,
> > the compiler should error, however, with pocl, the compilation completes
> > successfully, but the program then crashes due to a symbol lookup error
> when
> > trying to run the kernel. I have produced a standalone script here:
> >
> > http://paste.ubuntu.com/25031508/ (additional examples in the footer of
> this
> > email)
> >
> > Secondly, there are cases where the program silently crashes during
> kernel
> > execution with an error message. Example:
> >
> > http://paste.ubuntu.com/25031556/ (additional examples in the footer of
> this
> > email)
> >
> > In the above case, the kernel performs a mod zero operation which in the
> > spec is undefined, though the kernel completes on NVIDIA/Intel OpenCL
> > implementations.
> >
> > Cheers,
> > Chris
> >
> > Additional examples of undefined symbol errors:
> >
> > http://paste.ubuntu.com/25031509/
> > http://paste.ubuntu.com/25031510/
> > http://paste.ubuntu.com/25031511/
> > http://paste.ubuntu.com/25031512/
> > http://paste.ubuntu.com/25031513/
> > http://paste.ubuntu.com/25031514/
> > http://paste.ubuntu.com/25031515/
> > http://paste.ubuntu.com/25031516/
> > http://paste.ubuntu.com/25031517/
> > http://paste.ubuntu.com/25031518/
> > http://paste.ubuntu.com/25031519/
> > http://paste.ubuntu.com/25031520/
> > http://paste.ubuntu.com/25031521/
> > http://paste.ubuntu.com/25031522/
> > http://paste.ubuntu.com/25031523/
> > http://paste.ubuntu.com/25031524/
> > http://paste.ubuntu.com/25031525/
> > http://paste.ubuntu.com/25031526/
> > http://paste.ubuntu.com/25031527/
> > http://paste.ubuntu.com/25031528/
> > http://paste.ubuntu.com/25031529/
> > http://paste.ubuntu.com/25031530/
> > http://paste.ubuntu.com/25031531/
> > http://paste.ubuntu.com/25031532/
> > http://paste.ubuntu.com/25031533/
> > http://paste.ubuntu.com/25031535/
> > http://paste.ubuntu.com/25031536/
> > http://paste.ubuntu.com/25031538/
> > http://paste.ubuntu.com/25031539/
> >
> > Additional examples of runtime crashes:
> >
> > http://paste.ubuntu.com/25031555/
> > http://paste.ubuntu.com/25031557/
> > http://paste.ubuntu.com/25031558/
> > http://paste.ubuntu.com/25031559/
> > http://paste.ubuntu.com/25031561/
> > http://paste.ubuntu.com/25031562/
> > http://paste.ubuntu.com/25031563/
> > http://paste.ubuntu.com/25031564/
> > http://paste.ubuntu.com/25031565/
> > http://paste.ubuntu.com/25031566/
> > http://paste.ubuntu.com/25031567/
> > http://paste.ubuntu.com/25031568/
> > http://paste.ubuntu.com/25031569/
> > http://paste.ubuntu.com/25031570/
> > http://paste.ubuntu.com/25031571/
> > http://paste.ubuntu.com/25031572/
> > http://paste.ubuntu.com/25031573/
> > http://paste.ubuntu.com/25031574/
> > http://paste.ubuntu.com/25031575/
> > http://paste.ubuntu.com/25031576/
> > http://paste.ubuntu.com/25031577/
> >
> >
> >
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> >
> >
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> >
>
> --
> Pekka
>
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