[Bug 102491] OpenCL app gets CL_OUT_OF_HOST_MEMORY on Cape Verde 7770

https://bugs.freedesktop.org/show_bug.cgi?id=102491

--- Comment #5 from ka.nick@mail.ru --- I managed to make it work somehow, but it's still unusable due to producing artifacts on images processed using opencl on darktable and few other programs I tried. So probably the title should be changed.

However, CL_OUT_OF_HOST_MEMORY error may be removed via envitonment var setting, namely

export GPU_FORCE_64BIT_PTR=1

also

export GPU_USE_SYNC_OBJECTS=1 export GPU_MAX_ALLOC_PERCENT=100 export GPU_SINGLE_ALLOC_PERCENT=100 export GPU_MAX_HEAP_SIZE=100

are recommended but I haven't noticed any difference. What I've noticed, however, is that the driver reports the different amount of available GPU memory each time darktable is started...