[Mesa-dev] [Bug 103586] OpenCL/Clover: AMD Turks: corrupt output buffer (depending on dimension order?)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103586

--- Comment #6 from Dave Gilbert <freedesktop at treblig.org> ---
(In reply to Jan Vesely from comment #5)
> (In reply to Dave Gilbert from comment #4)
> > Created attachment 135313 [details]
> > foo.link-0.ll
> > 
> > That's all 3 of the debug files it produced.
> > (I wasn't sure which were the llvm and which the isa dumps; I guess the asm
> > is the isa? and the ll's are both llvm dumps?)
> 
> yes. the first .ll is from compilation step, the other one is from linking
> step.
> 
> .ll dump looks correct.
> .asm also looks correct.
> 
> you can try producing multiple asm dumps for working and non-working runs.
> But I don't think that the llvm is the culprit here.
> 
> Can you try waiting for the kernel execution to complete explicitly before
> mapping the buffer?
> Ideally call clFinish() on line 63.

Since I'm on the C++ binding (probably a mistake) I used:
  queue.finish();

and it seems to be working.

(This also corresponds possibly to what I'm seeing on a more complex kernel;
with a more complex kernel I'm seeing on a whole pile of data on the last few Z
slices as being bogus suggesting it's not finished).

Dave

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