poor Execution Provider support for Arm64 : which way to go ?

[maxmarsc]

Hi, I'm building a C++ inference program for aarch64 based on onnxruntime, I do not target android or iOS, strictly Linux on embedded targets.

My concern is the following :

• since the ACL support is quite broken (see [Build] aarch64 ACL (20.02) build fails with onnxruntime v1.13.1, 1.14.1 and 1.15.0 #16176), and rely on ACL 20.02 which is already 3 years old. And the documentation is outdated (doesn't mention the --use_acl flag of the build.sh script).
• since the ArmNN support is quite outdated : 20.02 is 3yo, relying on boost 1.59 (8yo)

I cannot even benchmark "vanilla" build or "minimal" build against these builds.

I know these EP are marked as "preview" on the website, but these are not preview issue, it feels like these options are left aside or deprecated. Are they reason for that ? Are they benchmarks or other considerations I should know ?

I could go for a "vanilla" build or a "minimal" build but I'd like to avoid it unless I find good reason to do so.

Thanks for the help