Re: [Intel-gfx] Beignet crashes on vanilla 3.17.1 with IVB hardware

[Zhigang Gong <zhigang.gong@linux.intel.com>]

Vasily,

Could you try ImageMagick(convert) again with latest git master
beignet(git-e46764f). It should work now.

Thanks,
Zhigang Gong.

On Fri, Oct 24, 2014 at 04:36:49PM +0300, Vasily Khoruzhick wrote:
> Hi Zhigang,
> 
> On Fri, Oct 24, 2014 at 12:13 PM, Zhigang Gong
> <zhigang.gong@linux.intel.com> wrote:
> > Hi,
> >
> > Luxmark (both 2.0/2.1) works fine on my IVB machine. The back trace
> > you provided below doesn't indicate it's a beignet related problem.
> > It hadn't enter beignet domain and just crashed in luxmark internal.
> 
> I'm testing with Luxmark-1.3.1. Luxmark 2.0 works fine.
> 
> > On Fri, Oct 24, 2014 at 12:04:29PM +0300, Vasily Khoruzhick wrote:
> >> Hi Zhigang,
> >>
> >> Luxmark crashes with following backtrace:
> >>
> >> Program received signal SIGSEGV, Segmentation fault.
> >> 0x00000000004cd8b0 in slg::PathOCLRenderEngine::StopLockLess() ()
> >> (gdb) bt
> >> #0  0x00000000004cd8b0 in slg::PathOCLRenderEngine::StopLockLess() ()
> >> #1  0x0000000000482236 in slg::RenderEngine::Stop() ()
> >> #2  0x000000000047be9b in slg::RenderSession::~RenderSession() ()
> >> #3  0x0000000000468a77 in LuxMarkApp::Stop() ()
> >> #4  0x0000000000468b46 in LuxMarkApp::InitRendering(LuxMarkAppMode,
> >> char const*) ()
> >
> > After a quick analysis, I confirm that the second case is indeed a beignet
> > bug. Beignet lacks of some llvm intrinsics support such as
> > llvm.uadd.with.overflow.i32().
> >
> > Will fix it next week.
> 
> Ok, thank you!
> 
> > Thanks,
> > Zhigang Gong.
> 
> Regards
> Vasily
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