Error open cl

[Newwsr]

I have this error.

GPU 2, OPENCL ERROR -4 (0) -CANNOT CREATE DAG ON GPU
GPU 0, OPENCL ERROR -4 (0) -CANNOT CREATE DAG ON GPU

What can it be ?
asrock pro btc 81
3 x 470 4gb nitro

[toptek]

if it's windows try this first

Code:

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100

Linux

Code:

export GPU_FORCE_64BIT_PTR=0
export GPU_MAX_HEAP_SIZE=100
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
export GPU_SINGLE_ALLOC_PERCENT=100