...PowerChallenge

Supported by the National Science Foundation under Grant No. DMR-9520554, and by the Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. Computer time was provided by the NSF at the NCSA in Illinois and by NERSC at LBNL.

...Pfrommer

Department of Physics, University of California at Berkeley, CA.

...Simon

NERSC Division, Lawrence Berkeley National Laboratory, Berkeley, CA.

...operations

By exploiting the locality of the projectors in realspace, the scaling of this term can be reduced to 31#31. We have not implemented this optimization yet, since maintaining orthonormality between the wave functions also scales like 32#32, thus reducing the benefits.

...eigenvectors

The number of eigenvalues is lower than what would be really required. This is to allow us to fit the problem into the memory of four T3E nodes

Bernd Pfrommer
Tue Jul 22 17:09:54 PDT 1997