[bradcray]

Historically, Chapel had an effort to support mixed instruction sets within a single logical program, but this effort fell by the wayside due to the amount of effort required to maintain it, combined with the fact that it was virtually unused (most HPC programmers are using homogeneous nodes, or at least ones with compatible ISAs).

Chapel can still be used in multi-architecture distributed computing today, but by running a Chapel program per ISA and having them communicate through more traditional means (e.g., ZMQ).

[Abishek_Muthian]

Thank you for the heads-up.