> -----Original Message-----
> From: Tom Stellard [mailto:[email protected]]
> Subject: Re: [Mesa-dev] EXTERNAL: Re: Radeon
> r600_ring_test/evergreen_resume errors
>
> On Fri, Feb 21, 2014 at 05:53:02PM +0000, Dorrington, Albert wrote:
> > > -----Original Message-----
> > > From: Alex Deucher [mailto:[email protected]] You are seeing a
> > > GPU hang and the driver attempts to reset it which doesn't always
> > > work. Probably a problem in the OpenGL or OpenCL driver in mesa.
> > >
> > > Alex
> >
> > I assume there is some sort of watchdog timer monitoring the GPU, is
> there a way to increase this timer duration?
> > The results I am seeing are somewhat inconsistent, as the same code
> doesn't appear to cause the crash in a repeatable manner.
> >
>
> Can you share the opencl kernel you are trying to compile?
>
> -Tom
I have finally been able to capture the kernel that is being generated, and
when I compiled on the command line I received an assert error
llc: /home/aldorr/opensrc/llvm_test/include/llvm/MC/MCRegisterInfo.h:65:
unsigned int llvm::MCRegisterClass::getRegister(unsigned int) const: Assertion
`i < getNumRegs() && "Register number out of range!"' failed.
I am assuming that the stalling is a result of the program i'm using not
recognizing the fact that the compile was bad, and attempting to push a buffer
full of something other than the program into the video card.
With being able to see the error from the command line build, I understand that
something in the code being compiled is resulting in running out of registers.
But I am not sure what that is.
Here is the kernel code, which I believe is trying to verify that what goes in
comes out the same. (Disclaimer: I didn't write this kernel code) ;-)
__kernel void test_kernel( __global long4 *in, __global long4 *out)
{
__private long4 internal[ 32 ];
int tid = get_global_id( 0 );
for( int i = 0; i < 32; i++ ) {
internal[ i ] = in[ i ];
}
out[ tid ] = internal[tid];
}
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