What do to when encountering TVM Errors

When running TVM, you may encounter an error message like:

---------------------------------------------------------------
An error occurred during the execution of TVM.
For more information, please see: https://tvm.apache.org/docs/errors.html
---------------------------------------------------------------

Congratulations! You found this page. Below are some hints on how to interpret these error messages and what you can do when they occur.

Where do these errors come from?

This error is caused by an internal invariant being violated during TVM’s execution. On a technical level, the message is generated by the ICHECK macro, found in include/tvm/runtime/logging.h. The ICHECK macro is used in many places in the TVM code to assert some condition is true during execution; any time the assertion fails, TVM will exit with the error message shown above.

For more details about how errors are handled and generated by TVM, please see error-handling-guide.

What should I do when I encounter such an error?

First of all, don’t panic. Well, you can panic, but it won’t help.

The best course of action is to search the Apache TVM Discuss Forum for the error you are encountering, to see if this has been a problem that others have encountered, and what the solution might be. If this error is the result of a bug that has been fixed in a more recent version of TVM, you may need to update to a newer version.

If you do not find an existing Discuss Forum thread about your issue, you are welcome to start a new thread on the forum with details on the problem. Please include in your posting the following key pieces of information:

  • The version of TVM you are using (e.g., the git commit hash of your source tree).

  • Which hardware and operating system version you are running TVM on.

  • Which hardware device and OS you are targeting for your TVM compilation.

  • Details on the model, inputs, or other information about the workload, which can be used to reproduce your problem.

Without these details it is very difficult for the TVM developers to do very much to help you.