Hi Zahra,

Could you give us the input file so that we can identify the error properly?
The error occurs because some of the atoms are very close to each other.

Regards,

Juzar Thingna
Department of Physics,
Center for Computation Science and Engineering,
National University of Singapore.



On Mon, Apr 18, 2011 at 3:22 PM, zahra akbarinejad <[email protected]
> wrote:

> Hi siesta users
>
> When Siesta calculates the DM, in the output file the following warnings
> appears:
> To remove the warnings, I have repeatedly changed the unit cell
> That means I bring up the unit cell to  lattice vectors distance from the
> edge atoms is much
> But each time the following errors will appear
> Can any one help me?
>
> siesta: WARNING: Atoms     5    46 too close: rij =    0.000003 Ang
> siesta: WARNING: Atoms     6    48 too close: rij =    0.000003 Ang
> siesta: WARNING: Atoms     9   114 too close: rij =    0.000008 Ang
> siesta: WARNING: Atoms    10   116 too close: rij =    0.000008 Ang
> siesta: WARNING: Atoms    11   162 too close: rij =    0.000011 Ang
> siesta: WARNING: Atoms    12   164 too close: rij =    0.000011 Ang
> siesta: WARNING: Atoms    13   218 too close: rij =    0.000016 Ang
> siesta: WARNING: Atoms    14   220 too close: rij =    0.000016 Ang
> siesta: WARNING: Atoms    45    46 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms    47    48 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   113   114 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   115   116 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   161   162 too close: rij =    0.000002 Ang
> siesta: WARNING: Atoms   163   164 too close: rij =    0.000002 Ang
> siesta: WARNING: Atoms   217   218 too close: rij =    0.000004 Ang
> siesta: WARNING: Atoms   219   220 too close: rij =    0.000004 Ang
> siesta: WARNING: Atoms   253   294 too close: rij =    0.000003 Ang
> siesta: WARNING: Atoms   254   296 too close: rij =    0.000003 Ang
> siesta: WARNING: Atoms   257   362 too close: rij =    0.000008 Ang
> siesta: WARNING: Atoms   258   364 too close: rij =    0.000008 Ang
> siesta: WARNING: Atoms   259   410 too close: rij =    0.000011 Ang
> siesta: WARNING: Atoms   260   412 too close: rij =    0.000011 Ang
> siesta: WARNING: Atoms   261   466 too close: rij =    0.000016 Ang
> siesta: WARNING: Atoms   262   468 too close: rij =    0.000016 Ang
> siesta: WARNING: Atoms   293   294 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   295   296 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   361   362 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   363   364 too close: rij =    0.000000 Ang
> siesta: WARNING: Atoms   409   410 too close: rij =    0.000002 Ang
> siesta: WARNING: Atoms   411   412 too close: rij =    0.000002 Ang
> siesta: WARNING: Atoms   465   466 too close: rij =    0.000004 Ang
> siesta: WARNING: Atoms   467   468 too close: rij =    0.000004 Ang
> New_DM. Step:     1
> Initializing Density Matrix...
>
> InitMesh: MESH =   384 x   384 x    64 =     9437184
> InitMesh: Mesh cutoff (required, used) =   100.000   107.843 Ry
>
> * Maximum dynamic memory allocated =   920 MB
> Error in Cholesky factorisation in cdiag
> ERROR STOP from Node:    0
> Error in Cholesky factorisation in cdiag
> ERROR STOP from Node:    0
>
> Thanks
>
>

Responder a