If you are doing rsync and you encountered this error like rsync out of memory, you may want to take a look.a this article (Rsync out of memory? Try this…). Need to add an additional parameter (–no-inc-recursive) to the rsync commands.
According to the article, the the out of memory failure occured when rsync attempts to load all the filenames and info in to RAM at startup.
# rsync -lH -rva --no-inc-recursive --progress gromacs remote_server:/usr/local