Set SF as the default vscat type for all comm size
Since VECSCATTERSF now supports GPU and all optimizations in the old vecscat, while VECSCATTERSEQ does not support GPU.
Thanks to: Jed Brown jed@jedbrown.org
Edited by Junchao Zhang
Since VECSCATTERSF now supports GPU and all optimizations in the old vecscat, while VECSCATTERSEQ does not support GPU.
Thanks to: Jed Brown jed@jedbrown.org