diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..f087b42
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.tar.gz filter=lfs diff=lfs merge=lfs -text
diff --git a/MPI/lammps/2018/variants b/MPI/lammps/2018/variants
new file mode 100644
index 0000000..b74e7a5
--- /dev/null
+++ b/MPI/lammps/2018/variants
@@ -0,0 +1 @@
+lammps/2018.3	unstable	gcc/7.3.0 openmpi/3.0.1
diff --git a/MPI/lammps/files/lammps-2018.3.tar.gz b/MPI/lammps/files/lammps-2018.3.tar.gz
new file mode 100644
index 0000000..f85294c
--- /dev/null
+++ b/MPI/lammps/files/lammps-2018.3.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2a00bda549f0bc75196ae58c9176198af03c3ce9a79640ecf1a521fc32978002
+size 124306996