Difference between computation migration and process migration?

Answer 1

Process migration is an extreme form of computation migration. In computation migration, an RPC might be sent to a remote processor in order to execute a computation that could be more efficiently executed on the remote node. In process migration, the entire process is transported to the remote node, where the process continues its execution. Since process migration is an extension of computation migration, more issues need to be considered for implementing process migration. In particular, it is always challenging to migrate all of the necessary state to execute the process, and it is sometimes difficult to transport state regarding open files and open devices. Such a high degree of transparency and completeness is not required for computation migration, where it is clear to the programmer that only a certain section of the code is to be executed remotely and the programmer.