Add support for hipstdpar #1
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This PR adds support for offload to AMD GPUs using the
par_unseqexecution policy in C++ standard parallelism algorithms. To trigger the GPU offload of all parallel algorithms, the--hipstdparcompilation flag must be provided. For GPU targets other than the current default ofgfx906, the--offload-arch=<arch_string>option must also be provided at compile time.When using ROCm 6.1.0, the compilation commands may look like the following if compiling for an AMD Instinct MI200 series GPU, for instance:
Please let me know if you have any questions.