Question about using APUs

Discussion created by jprice on Oct 5, 2011
Latest reply on Oct 5, 2011 by jprice
Using both GPU and CPU components

I'm using a system that gives the following platform information:

Name      : AMD Accelerated Parallel Processing
Vendor    : Advanced Micro Devices, Inc.
Version   : OpenCL 1.1 AMD-APP-SDK-v2.5 (684.213)
Device #1 : BeaverCreek (Advanced Micro Devices, Inc.) [CL_DEVICE_TYPE GPU]
Device #2 : AMD A8-3850 APU with Radeon(tm) HD Graphics (AuthenticAMD) [CL_DEVICE_TYPE_CPU]

I'm able to use either of these two devices individually without a problem. However, if I try and use both together it fails (kernel doesn't execute at all on GPU, no error).

Is there something I need to do to be able to fully utilise the APU, or am I misunderstanding something about how these systems work?