Commit Graph

9 Commits

Author SHA1 Message Date
giannozz 6eae898b2a More merge of noncolinear stuff
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@3702 c92efa57-630b-4861-b058-cf58834340f0
2007-01-21 20:09:10 +00:00
giannozz f533b052d5 dbl => DP (defined as previously dbl was)
syntax for declarations: real(DP), without "kind="


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@2135 c92efa57-630b-4861-b058-cf58834340f0
2005-08-28 14:09:42 +00:00
sbraccia 1ab31b8fdc Yet another version of the DIIS algorithm (it substitutes the previous one). This version is slower (but not dramatically) than davidson for small systems, faster for large systems (the cross-over is around 300 bands), but there is space for further improvements. A gamma-point version is also implemented (previously missing). An "holes-sniffer" is implemented to prevent holes in the eigenvalues spectrum.
C.S.


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@876 c92efa57-630b-4861-b058-cf58834340f0
2004-05-11 08:11:52 +00:00
giannozz 0b1a5c9fd8 Extensive module cleanup: DP moved from wrong place (parameters) to the
correct place (kinds); module "varie" replaced by "control_flags" (not
yet in pwcom, though) - many many files changed.
64-bit cpus (Opteron, maybe Itanium) should now work if __LINUX64 is defined


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@513 c92efa57-630b-4861-b058-cf58834340f0
2004-01-23 15:08:03 +00:00
sbraccia 2efd90d37f General cleanup. The threshold for diagonalization (ethr) is now fixed to 1.D-5 at the first scf iteration (iter=1). A check is then performed to verify that the resulting density is adeguate (dr2/nelec > ethr). If it is not the diagonalization goes on with a smaller ethr. For iter > 1 ethr is updated with the old recipe. Also added a warning in update_pot that indicates "problems" in the wfc extrapolation. This problem has not yet been fixed.
C.S.


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@495 c92efa57-630b-4861-b058-cf58834340f0
2004-01-20 12:26:22 +00:00
giannozz 644e487002 Iterative diag for Gamma case updated - comments, indent etc.
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@150 c92efa57-630b-4861-b058-cf58834340f0
2003-04-09 13:58:05 +00:00
degironc 63c59eb8b1 08 apr 2003 g_psi, g_psi_mod: new preconditioning (better behaved when
hdiag-e*sdiag is close to zero) used in cegterg. This
             removes most of the warning messages when using Davidson
             diagonalization. Although the overall performance (number of
             h_psi performed) does not seem to change very much in small
             tests, except pathological cases like ni.band.in in example1,
             it should be wise to have a more stable preconditioning.
             cegterg: use always GEMM instead of GEMV in the update.
             electrons: in a relaxation run perform accurately the first
             iteration after ionic move but reset the diagonalization
             threshold according to the actual self-consistence for the
             following ones.


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@147 c92efa57-630b-4861-b058-cf58834340f0
2003-04-08 06:44:33 +00:00
giannozz d852392cab module allocate, calls to mallocate, mfree removed
pointers replaced by allocatable whenever possible


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@56 c92efa57-630b-4861-b058-cf58834340f0
2003-02-07 16:04:36 +00:00
giannozz ac9f2144c0 O-sesame
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@2 c92efa57-630b-4861-b058-cf58834340f0
2003-01-19 21:58:50 +00:00