可以理解底层都是用的hip么？另外，这个onnxruntime版本怎么自定义编译，比如我要编arm版本在dcu上，还有新增自定义算子怎么编译呢？

底层都是基于hip, 如果要编译 rocm将 tools/ci_build/build.py use_rocm打开, 编译 migraphx版本需将 use_migraphx打开，确保安装 dtk软件包，新增自定义算子和其他后端一样，到对应文件添加注册

@hepj OrtMIGraphXProviderOptions migraphx_options; migraphx_options.device_id = 0; sessionOptions.AppendExecutionProvider_MIGraphX(migraphx_options); 直接使用migraphx版本出现下面的问题，我在整个机器目录下都没搜到libmigraphx_c.so.3这个库 terminate called after throwing an instance of 'Ort::Exception' what(): /mnt/das15_rc5/onnxruntime/onnxruntime/core/session/provider_bridge_ort.cc:1131 onnxruntime::Provider& onnxruntime::ProviderLibrary::Get() [ONNXRuntimeError] : 1 : FAIL : Failed to load library libonnxruntime_providers_migraphx.so with error: libmigraphx_c.so.3: cannot open shared object file: No such file or directory