Remove TORQUE from related work
RelatedWorkd: BOINC

*   reword last sentence
RelatedWork: GPUDirect

*   Add new glossary terms:

    -   infiniband

    -   rdma

*   paragraph changes:

    -   redefine what GPUDirect is

    -   add inifiband glossary item

    -   add reference to rdma

*   Update reference:

    -   better key
RelatedWord: MPI

*   remove ``language-independent''