I am getting computation error

Boinc should be reporting (on it's startup in the Event Log) CPU OpenCL support from the AMD drivers installed, and is unlikely is report CPU OpenCL support from Intel drivers (AMD CPU).

I've been looking at:

http://boinc.berkeley.edu/trac/wiki/GPUApp

OpenCL Sample Notes

The openclapp sample calls boinc_get_opencl_ids(), which reads an init_data.xml file to determine which GPU to use. Actual project applications must also do this. Please see the ReadMe.txt file for more information.

This same sample is designed to run with AMD, NVIDIA and Intel Ivy Bridge GPUs. It is supplied with 3 minimal init_data.xml files, one for each of these 3 vendors (GPU "types".) Copy the appropriate init_data.xml file into the directory containing the openclapp executable.

This seems to imply you should send a init_data.xml suitable for each vendors device.

http://boinc.berkeley.edu/trac/wiki/OpenclApps

Application requirements

Your application must call

int boinc_get_opencl_ids(int argc, char** argv, int type, cl_device_id* device, cl_platform_id* platform);

This returns the OpenCL platform and device IDs for the GPU that your app should use. Pass the argc and argv your application receives from the BOINC client. The third argument type should specify the vendor of the desired GPU and can be one of the following:

Symbol	value
PROC_TYPE_NVIDIA_GPU	1
PROC_TYPE_AMD_GPU	2
PROC_TYPE_INTEL_GPU	3

With BOINC Clients version 7.0.12 or later, the first 3 arguments will be ignored and all data will be taken from the init_data.xml file in the slot directory. The first 3 arguments allow this to work with older BOINC Clients. If your OpenCL app can use OpenCL-capable GPUs from any vendor, you can pass 0 for the third argument (type); if you pass a type value of 0, the type will be taken from the gpu_type field of the init_data.xml file on newer clients, but will return an error code of CL_INVALID_DEVICE_TYPE on older clients.

This function is in the library boinc/api/libboinc_opencl.a (on Macs: boinc/mac_build/build/Deployment/libboinc_opencl.a). As an alternative to linking the library, you can add the file boinc/api/libboinc_opencl.cpp to your source files when building your project application.

This implies that if your app can run on a GPU from any vendor, and you set the type as 0, as opposed to, 1, 2 or 3, then the type is taken from the what actually in the init_data.xml, is the Wrong init_data.xml being supplied?

http://boinc.berkeley.edu/trac/wiki/ProjectPlan

Part of the Boinc project plan is:

Update boinc_get_opencl_ids() API code

• Special value for type arg to mean "any vendor" (return error on older clients which don't have aid.gpu_type in init_data.xml file.)
• what should it do if type arg does not match aid.gpu_type from init_data.xml file?
• compatibility with <coproc> option in cc_config.xml?

Claggy