[SIESTA-L] optical:scf=1month:1hour (is this conclusive?)

2012-11-13 Por tôpico Roberto Guerra
Dear all, every time I try to make use of the optical routine of siesta I'm impressed by its crawling. If a single scf cycle takes 1 hour, the optical calculation took 30.9 days! This is the opposite of what happens in plane-wave codes, where the proportion of scf-vs-optical time consumption is

Re: Re: [SIESTA-L] How to fix the eggbox-effect?

2012-11-13 Por tôpico 毛飞
Hi, Emilio Actually, I have defined the variable FilterCutoff in my input file, but I do not know how to choose the value for it. I just know it should be smaller than the value of MeshCutoff (for example, if I choose 400 Ry for MeshCutoff, then how about the FilterCutoff). So, the same

[SIESTA-L] Can not access to mailing list archive?

2012-11-13 Por tôpico 毛飞
Hi, all I find the mailing list archive of Siesta can not to be connected for me. How about you? All best Fei Mao Beijing Normal University, China

Re: [SIESTA-L] How to fix the eggbox-effect?

2012-11-13 Por tôpico Emilio Artacho
Dear Fei You could also use filtering (see e.g. FilterTol) Emilio On 13 Nov 2012, at 11:11, 毛飞 wrote: > Hi, all > > Thank you for your kind reply. I also have learned the script > eggbox_checker.py in the user’s guide, but I do not know how to use it. Can > it be compiled and to be generate

Re: [SPAM] Re: [SIESTA-L] How to fix the eggbox-effect?

2012-11-13 Por tôpico 毛飞
Hi, Homa I think the parameters defined for optimizing graphene nanoribbon are related to your system, such as the dimensions of your simulation cell, and the number of atoms in your system. Something like that influences the optimization results. Regards Fei Mao Beijing Normal Univ

Re: Re: [SIESTA-L] How to fix the eggbox-effect?

2012-11-13 Por tôpico 毛飞
Hi, all Thank you for your kind reply. I also have learned the script eggbox_checker.py in the user’s guide, but I do not know how to use it. Can it be compiled and to be generated as a executable? In the guide, it does not talk too much about how to use this script, I do not know. And when

Re: [SIESTA-L] zincblend CdSe bands

2012-11-13 Por tôpico Francesco Tassone
Il 12/11/2012 21:36, Oleksandr Voznyy ha scritto: Hi Francesco, here is my input file. I have 4.38A lattice constant, so 6.05A is definitely some wrong value (it is probably the Cd-Cd distance but not the lattice constant). Alex. Thanks Alex, I see you are specifying an additional KB projector w

[SIESTA-L] Why Siesta is Free?

2012-11-13 Por tôpico Eduardo Gracia
Hi, Certainly, Siesta is not fully free, I guess in a healthy environment, it is not fair that someone make some profit using tools that belongs to others! but for academic researches, we can have access to this and other codes for free, promoting the generation of new knowledge! and because of

Re: [SIESTA-L] Change size of auxiliary super cell

2012-11-13 Por tôpico Ulrich Biedermann
I think it changes with the orbital cutoff (and the supercell size) - Original Message - From: Ilia Sivkov [mailto:isiv...@mpi-halle.mpg.de] To: siesta-l@uam.es [mailto:siesta-l@uam.es] Sent: Mon, 12 Nov 2012 20:59:54 +0100 Subject: [SIESTA-L] Change size of auxiliary super cell > Hello