References #5512 Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov> (cherry picked from commit c74cf666a983179ffb6e5a13b7da8ba807f4d16d) Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit adds support for atomic operations as well as rdma for systems without rdma support. This support is implemented using an internal send tag. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>