I recently started experimenting with the Axiom GPU solver from the excellent Matt Puchala at https://www.mattpuchala.com/axiom.
The smoke simulation is very quick and done on the GPU. Even with an older GPU like an NVidia GTX 1070 it runs very fast, in fact much faster than the sparse pyro in Houdini.
The rendering was done with VRAY but that took surprisingly long, possibly because I’m still quite new with it. I’ll be working on ways to improve the shading and speeding it up.