hi pjmlp! love reading your comments :) > So AS/400 applications are not native, given that they use an intermediate representation with a kernel level JIT? T

hi pjmlp! love reading your comments :) > So AS/400 applications are not native, given that they use an intermediate representation with a kernel level JIT? Thanks for making me read up on AS/400 (or System i as IBM now calls[0] it.) I found this article: [TIMI – Protecting Investments and Integrity in IBM i](http://ibmsystemsmag.com/blogs/you-and-i/archive/timi-protecting-investments-and-integrity-in-ibm-i/ http://ibmsystemsmag.com/blogs/you-and-i/archive/timi-protec...) – it says, “Each program that is compiled on IBM i gets turned into a set of TIMI instructions. Essentially, it gets compiled down to a set of intermediate code. For decades, that’s been a pretty common step for a compiler to take – get to an intermediate representation of the program before creating the machine-level instructions. One big difference, though, is that the compiler on IBM i does not go any further. It leaves the intermediate code connected to the program object, and then the lower levels of IBM i act on the intermediate code to translate it into the instructions used by the Power hypervisor and Power processor beneath the OS. IBM i does this only when necessary, not every time the program executes. Typically, the translation takes place once when the program is moved from one release of the operating system to a later one, and never again while it runs on that later release.” > Java is AOT compiled to native code on installation on Android 5 and 6. Then by your reasoning and terminology I think you'd also call IBM's tech AOT compiled, not JIT'd given that it happens once per OS release or app move, not each time the app is executed. And I would say that the applications that get delivered this way on AS/400 and Android 5 and 6 are delivered as non-native (intermediate code as the article says). And then get translated AOT to native which is stored somewhere else and the non-native code is kept around. Neat, I didn't know that about Android 7 and Dalvik. Is it the same for Art? > There are AOT compilers available for Java and C#, just as there are interpreters for C and C++. This I did know. :) Always welcome your insights, thanks! [0] https://en.wikipedia.org/wiki/IBM_System_i https://en.wikipedia.org/wiki/IBM_System_i