I've been studying TVM for quite a few weeks, still not crystal-clear about the relationship between these items: ***relay, tir, topi, te.*** I'll try to summarize my understanding and please correct me in my description below. Thanks in advance.
1. ***Relay*** Relay is the replacement for NNVM, which is a graph optimization toolset. It works on tensor expressions (***te***, question: is relay te same as tir te?). Input *te* is either extracted from imported trained neural network or manually constructed using relay.\<op>, those are so-called Relay IR, a high-level IR. There are certain *attr* are defined or extracted for each relay operator. These attributes are used to later match or find *best* implementations in ***topi*** using so-called FTVMStrategy. 2. ***tir*** Tir is low-level IR before "translating" to target-specific backends. E.g. if x86 is target, then tir is first mapped to llvm IR, then x86 codegen is called to generate target binary. 3. ***topi*** A bridge between Relay IR and tir. A repository of operator implementations, describing what to compute and how to compute (schedule). The FTVMSTrategy mechanism allows relay operator to be mapped to highest scored implementation. --- [Visit Topic](https://discuss.tvm.ai/t/tvm-terms-relay-topi-tir-te/6474/1) to respond. You are receiving this because you enabled mailing list mode. To unsubscribe from these emails, [click here](https://discuss.tvm.ai/email/unsubscribe/59c601308ca3aa3dc28ca46b88348fc08dd9c346702acfbf23e3bc8d0605cd6e).
