This package provides derived dump styles that allow compressed file I/O via compression libraries. This is similar to what is enabled through using the -DLAMMPS_GZIP preprocessor flag and a *.gz suffix on a dump file name when using a non-gz dump style (e.g. custom instead of custom/gz), but it does not open a pipe to an external executable that handles the compression. Instead these styles use library calls to libraries like zlib, and thus have to be compiled using the library header files and linked to the corresponding library. This provides an alternative for compressed file I/O on systems where using a pipe can cause problems, e.g. when using RDMA communication with pinned memory like clusters with Infiniband or Myrinet.

Currently a few selected dump styles are supported for writing via this packaging.