I have added a mpich3 pkgbuild to the AUR. For those that do not know, mpich3 is an implementation of the message passing interface (MPI) used in distributed computing projects.
I didn't realize there was already an mpich package on the AUR (my packer search didn't find anything for some reason).
mail aur-general and ask them to remove your package because its a duplicate. its better to not have multiple copies to avoid confusion.
There's no such thing as a stupid question, but there sure are a lot of inquisitive idiots !