OpenCL in 2020 begginer questions

OpenCL
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Hi all,

I’m just starting with OpenCL and I’m confused a little bit with few things:

  1. We have 2020 and OpenCL 2.2. specification. However for Mac I can see on Apple site that max support is 1.2. Also on my Linux clinfo says that nvidia driver supports only 1.2, Intel 1.1, and 1.1 for Mesa. And I have quite new computer with i9-9900K, RTX 2080 TI and updated drivers. I have something wrong with installation or simply OpenCL support is very limited? How portable are specific versions of OpenCL?
  2. I have algorithm that have plenty options and additional behaviors depending on provided parameters (like 30 different parameters). Can OpenCL handle such things?
  3. Is there any IDE currently for OpenCL or I should use for example eclipse for C++?
  4. Should I use OpenCL/opencl.h on mac or I can use also downloaded CL/cl.h
  5. Is there a way to use C++ in kernel code or kernel must be in C only?
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