Hardware:
AMD A8-7600 with Radeon™ R7 Series
Sapphire R7 240 4GB
ASUS R7 240 4GB
OS: Ubuntu server 17.04 64bit (headless mode).
OpenCL Driver: Padoka
Description:
clinfo works, shows all three GPU platforms.
Sometimes I get segmentation fault using memtestCL.
I get 100% crashes with YACMiner (crypto mining software).
I've traced memtestCL down to this line:
https://github.com/ihaque/memtestCL/blob/607499a54dcac9b846fcc827dc5980d8e5f66cec/memtestCL_cli.cpp#L126
On repeating runs, clGetDeviceIDs sometimes returns 0 for num_cpu and sometimes
1.
If it returns 1, clGetDeviceInfo later crashes when called with device id that
does not exist.
If I hardcode "num_devices=3" at offending line, I can run memtestCL on all
three devices successfully without faults.