Hi guys!
I have just found a new project: https://www.mlcathome.org/mlcathome/ (to be honest, a user of the Boinc.Italy forum, boboviz, did it... great catch!).
It looks very interesting: it's aim is to study the mechanism underlying neural networks. Unfortunately at this moment is managed only by a single person, but he seems very active.
Work is available only for Linux AMD64, but he is working on a Windows and GPU version (also a Linux-ARM and Linux-PPC64 version).

I saw a single work unit from there on my Windows 8.1 x64 machine here earlier today. Test piece perhaps?

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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

Thanks, to boboviz too, who is always on top of everything.
I have completed one, and running three others on my Ryzen 2700 (Ubuntu 18.04.4).
They are running well, at a little over 1 1/2 hours (and around 700 MB each).