Calling Standard C code with OpenMP from OpenCL C code¶
Standard C code called from OpenCL C code can contain OpenMP pragmas. When using this feature the OpenCL C kernel containing the call to an OpenMP enabled C function must be submitted as a task (not an NDRangeKernel) and it must be submitted to an in-order OpenCL command queue (i.e. not defined with the CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE flag). In this scenario, OpenCL will dispatch the kernel to one compute unit of the DSP accelerator and the OpenMP runtime will manage distribution of tasks across the compute units. Please see vecadd_openmp example or vecadd_openmp_t example.