Overview
Fern is now supported by the Gern repository. Gern adds support for GPUs and contains Fern-style CPU support. Gern is under 🚧 active development 🚧.
The tutorial walks you through different programs in Fern with increasing complexity. The interface to Fern has changed from the paper, though it is equally powerful.
As opposed to thinking about an explicit separation between algorithm and schedule—where the schedule is a meta-program describing how lowering might proceed—the new interface is a "sketch" of the loop nest the user wants the generated program to have. This sketch is then deterministically lowered into imperative code, with the compiler filling in any details that can be automatically inferred.
The tutorial is organized as follows: