Dear developers,
is it possible to have multiple scratch areas, say /s1, /s2, etc in Psi4? It was possible in Psi3 using the keywords nvolume, volume1, volume2, …
I don’t think we have this feature available in psi4. Dr. Crawford @crawdad could correct me if I am wrong.
I am guessing you don’t have a consolidated scratch disk set ? You could always consolidate your scratch disks into a single RAID system on LINUX. It seems to be a standard practice.
Yes, I do have RAID 0 system. But, for some other reasons, I am interested in evenly splitting the scratch files over several (RAID 0) areas.
As @ashutosh said, to my knowledge, psi4 doesn’t have psi3’s capabilities in this regard. It’s a little more work, but you should be able to direct certain scratch files to certain disks (http://psicode.org/psi4manual/master/external.html#scratch-files-and-elementary-restart) which, if you know the big culprits, can help divide the burden among disks (but probably won’t help I/O, if that’s what you were after).
Thanks for the explanation. I am aware (and using) of this feature of Psi4. However, the idea of having scratch files (especially huge ones) evenly distributed over several areas is more appealing to me 
Yeah, we’d probably have to trade out PSIO for HDF5 or BD to get this back. We’d like to do that, but it’s not next on the agenda.