OpenCL GPU compiler fails on valid code

[Lubomir_A_]

This code fails to compile when using Intel SDK for OpenCL Applications 2014 with an Intel HD 4000 GPU:

kernel void f1(global double* W)
{
    const double t = 1.;
    min(W[0], t);
}

It complains about the call to min being ambiguous. Changing it to fmin fixes the compilation. The same code compiles fine when targeting the CPU device (Core i7-3820QM), or an NVIDIA GPU.

[Robert_I_Intel]

GPU device does not support cl_khr_fp64 currently, so switching to fmin will only help you so much. You should probably switch to floats instead of doubles on the GPU device.