SMDPL snapshot 42:   aexpn = 0.6643   z =   0.51

The SMDPL simulation is written in GADGET 1 format with an additional high word  field to compute the total number of particles when it is more than 2 billions (see the small read routine in the folder).

The files can be downloaded via wget, look up 
https://www.cosmosim.org/cms/files/simulation-data/

Note the total size of the files to be downloaded:  1.7 Tb.

Details about the cosmology can be found in the table
https://www.cosmosim.org/cms/simulations/simulations-overview/

If you use the simulation for a publication please cite

Klypin A., Yepes G., Gottl{\"o}ber S., Prada F., He{\ss} S., 2016, MNRAS, 457, 4340 

and add the following
Credits:

The SMDPL simulation has been performed at LRZ Munich within the project pr87yi. The CosmoSim database (www.cosmosim.org) providing the file access is a service by the Leibniz-Institute for Astrophysics Potsdam (AIP).