Hi All,

Could someone please help me figure out what is going on with MW GPU app? It's been broken for over a year, but I've upgraded every component since this problem started and nothing has fixed it.

I'm sure you know, but it's very difficult to diagnose these app failures, but, after the failed task is returned, I see this in the task log:

<core_client_version>7.8.0</core_client_version>
<![CDATA[
<message>
process exited with code 193 (0xc1, -63)
</message>
<stderr_txt>
<search_application> milkyway_separation 1.46 Linux x86_64 double OpenCL </search_application>
Reading preferences ended prematurely
BOINC GPU type suggests using OpenCL vendor 'Advanced Micro Devices, Inc.'
Setting process priority to 0 (13): Permission denied
Error loading Lua script 'astronomy_parameters.txt': [string "number_parameters: 4..."]:1: '<name>' expected near '4'
Switching to Parameter File 'astronomy_parameters.txt'
<number_WUs> 5 </number_WUs>
<number_params_per_WU> 20 </number_params_per_WU>
Using AVX path
Found 2 platforms
Platform 0 information:
Name: Clover
Version: OpenCL 1.1 Mesa 17.1.7
Vendor: Mesa
Extensions: cl_khr_icd
Profile: FULL_PROFILE
Platform 1 information:
Name: Portable Computing Language
Version: OpenCL 2.0 pocl 0.14, LLVM 4.0.0
Vendor: The pocl project
Extensions: cl_khr_icd
Profile: FULL_PROFILE
Didn't find preferred platform
Using device 0 on platform 0
Found 1 CL device
Device 'AMD POLARIS10 (DRM 3.15.0 / 4.12.8-300.fc26.x86_64, LLVM 4.0.0)' (AMD:0x1002) (CL_DEVICE_TYPE_GPU)
Board:
Driver version: 17.1.7
Version: OpenCL 1.1 Mesa 17.1.7
Compute capability: 0.0
Max compute units: 36
Clock frequency: 1288 Mhz
Global mem size: 8588091392
Local mem size: 32768
Max const buf size: 2147483647
Double extension: cl_khr_fp64
SIGSEGV: segmentation violation

Exiting...

</stderr_txt>
]]>

Hi Paul,

It looks like you are running on the open source GPU drivers. This is a known issue that we are still trying to find a solution to. AMD stopped supporting newer Linux kernels with their proprietary drivers. I've personally tried several times over the last year to try to find a solution to this problem, but I haven't had much luck. I can give it another try later this week when I free up one of our development computers to put an AMD graphics card in.

Sorry.

Jake