Follow up on my previous PR on supporting the new target system with `target_host` folded into the target object. I have submitted a new PR on review https://github.com/apache/tvm/pull/7534 this week to **fully support all functions** previously using target and target_host as argument with backward compatibility. This PR's scope is to cover everything before we finally deprecate `target_host`. New tutorial code and test code are also updated in the PR for recommended practice. Please review the code the let me know any advice on the PR, thanks!
Currently, I did not remove all usage of `target_host` as a variable mainly because of two reasons: 1. For heterogeneous targets, there could be multiple targets maintained in a dict, which makes a single `target_host` more convenient in related context. If we decide to move on in the deprecation, we might need to consider refactor the code for heterogenoues target. 2. It takes more time to replace all the occurance, and part of the code would be refactored, e.g., the structure of `SearchTaskNode` and the signature of `target_host` related functions, once we decide to deprecate `target_host`. I want to leave the work later if we decide on deprecation and be more consistent in design at that time. In the meantime, for next step, as @comaniac pointed out in his comment https://github.com/apache/tvm/pull/7534#pullrequestreview-606863269 we have different options in target_host deprecation (also see @junrushao1994 https://github.com/apache/tvm/pull/7462#issuecomment-781770687). * D0. Simply remove the `target_host` argument if that API is seldomly used. * D1. Keep the `target_host` argument, but log out a warning saying this is not effective anymore and will be deprecated. We can move on deprecation in the next release cycle. I think both ways could work. Would like to see how does everyone think and which way could be better. --- [Visit Topic](https://discuss.tvm.apache.org/t/rfc-tvm-target-specification/6844/57) to respond. You are receiving this because you enabled mailing list mode. To unsubscribe from these emails, [click here](https://discuss.tvm.apache.org/email/unsubscribe/02f4ef70e76bfa84be92bbe62a2553fdaf482cf36497513e54bb1c116af370dd).
