2 Replies Latest reply on Jun 28, 2016 9:15 AM by dipak

    OpenCL compiler crash


      The kernel in this code snippet (just the kernel matters--the Python bits around it just make it runnable) crashes many of the most recent CPU CL compilers with the following error message:


      Unhandled signal in divisionErrorHandler()
      [1]    22355 abort      python amd-crash.py


      The associated backtrace looks like this:

      #0  0x00007fffdf4af4ff in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #1  0x00007fffdf4b3687 in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #2  0x00007fffdf4b4544 in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #3  0x00007fffdce2c5a0 in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl12cl64.so
      #4  0x00007fffdf4b0195 in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #5  0x00007fffdf4b0c42 in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #6  0x00007fffdf4910ff in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #7  0x00007fffdf4a1504 in ?? () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so
      #8  0x00007fffdf481b70 in clBuildProgram () from /usr/lib/x86_64-linux-gnu/amdgpu-pro/libamdocl64.so


      In other words, this happens somewhere deep in clBuildProgram.


      Versions affected include the recent beta (16.15.2-277429 from AMD Radeon™ Software AMD GPU-PRO Beta Driver – Linux® for Vulkan™ Release Notes) and the 15.12 driver. 15.5 is the last version that works. I am running this on an Intel Broadwell chip, but it's reproducible on many other CPUs, including AMD ones.


      Unrelatedly, I would appreciate being whitelisted for the OpenCL community.