https://mvapich.cse.ohio-state.edu/userguide/gdr/
MVAPICH2-GDR 2.3.7
MVAPICH is a high performance Message Passing Interface (MPI) implementation targeting high performance internconnects including Infiniband (IB), RoCE,...
gdr
https://scm.nowlab.cse.ohio-state.edu/svn/mpi/mvapich2/trunk/src/mpi/
mpi - Revision 8629: /mvapich2/trunk/src/mpi
mpirevisiontrunksrc