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Suspected OpenCL compiler bug

Question asked by markr on Sep 17, 2015
Latest reply on Sep 22, 2015 by dipak

I have come across what I am convinced has to be a bug in the OpenCL compiler. I guess this needs to be posted on the OpenCL forum. The bug only occurs in specific circumstances, namely:

64 bit system

Relatively complex kernel, using sub-functions, loops  #prama unroll’s etc.

Device:  Hawaii (290X) (OK on Tahiti – I do not have any other boards readily available to try it on)

Using the ‘-cl-opt-disable’ option also makes the kernel operate correctly


I am using the latest AMD Driver: 15.200.1062.1004  (03/08/2015)


I have simplified the kernel as much as I can while still exhibiting the issue. I have created a simple self-contained console program that demonstrates the problem. A visual studio solution for VS2013 is in the attached zip file along with further details (see the Read.Me).