| Re: Memory Usage ( No.1 )|
- Date: 2006/11/04 01:32
- Name: T.Ozaki
It seems to be true that OpenMX requires a relatively large memory size,
and this is an unsolved issue.
However, if you are using a linear scaling solver, the memory requirement
seems to be reasonable, since the Green functions have to be stored.
| Re: Memory Usage ( No.2 )|
- Date: 2006/11/04 06:41
- Name: JessK
I would like to add that I have the same problem using O(N) method. My system is tetragonal bulk, 8x8x32 Angstrom, 160 atoms, cutoff 250 Ry. I tried different O(N) methods but all of them crashed before first MD step. I used both EM64T Intel machine (24 CPUs, 4 GB/node memory) and SGI altix (64 CPUs, 64 Gb memory in total). Are there some parameters which can be tuned?
P.S. In fact, with SIESTA I could manage to run this job even using traditional diagonalization method on 12 CPUs.