nmpkg.dll is a NMPKG
belonging to DevPartner Studio Shared Packages for Visual Studio .NET
from Compuware Corporation
Non-system processes like nmpkg.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.