coreml resample opration do not support gpu

hello! I have converted a single grid_sample opration in pytorch to mlpackage using your coremltools, and open it with xcode for benchmarking. there is only one op which is called resample. and I run it with my mac m1 pro .but I found that it is only run on cpu, so the latency is not in my demand. can you support the resample with gpu, or can i implement it with metal by myself?