Actually, at some point in the 2.4 kernel it was possibile to do that, with single image systems, such as openmosix, that handled process discovery, computation

Actually, at some point in the 2.4 kernel it was possibile to do that, with single image systems, such as openmosix, that handled process discovery, computation and much more, but underneath the simple user interface it was complex, kinda insecure and so, was never abandoned and never ported to newer versions.