Re: [SIESTA-L] Intel 8.1 ifort + mkl 7.2.1 compilation problem

2005-05-10 Thread edo
Intel reports a bug with version 8.1 , with version 8.0 produce no problems.

[SIESTA-L] Compile parallel siesta with ifort8 and mpi produce SERIAL version

2005-05-10 Thread Eduardo Romero
Hi, I recently compile siesta 1.3, with MPI support (blacs, scalapack, mpi libraries standard comes from debian 3.1), but when i run the program with mpirun , siesta says it a parallel version and freeze mpirun: [EMAIL PROTECTED]:~/t2/Vps$ /usr/bin/mpirun -np 2 /opt/siesta/bin/siesta < sih

[SIESTA-L] UNSUBSCRIBE

2005-05-10 Thread Francesca Nunzi
Please, unsubscribe me from the mailing list. Francesca

[SIESTA-L] Using SIESTA on an IBM Blade Center

2005-05-10 Thread Sebastien LeRoux
Dear SIESTA users, I am actually in trouble with SIESTA, Indeed this is possible I am using SIESTA in Ab-Initio MD simulations, on an IBM blade Center (15 nodes, 2procs/node, 1Go/node) My jobs are running successfuly, but only using 1procs/node this is mainly due to my system (216 particule

Re: [SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Stephanie Reich
Dear Mousumi, in addition to what María and Aleksei said a comment on your input file. You can use SZ to see whether the phonon calculation works or not. However, don't expect good values for the calculated frequencies with this poor basis. You want to use DZP with a 50-100meV EnergyShift for re

[SIESTA-L] Analysis of electron density

2005-05-10 Thread Woo Youn Kim
Dear All, I want to present a distribution of the valence electron density for CNT. This is my first time to use SIESA. How can I do that? Is there any program for that? Please let me know. With Best Regards Woo Youn Kim

Re: [SIESTA-L] variation of lattice constants

2005-05-10 Thread Andrei Postnikov
On Tue, 10 May 2005, [iso-8859-9] Prof.Dr. Kemal ÇOLAKO^^LU wrote: | Dear Siesta users and developers, | We would like to see the pressure -dependence of elastic constansts on some semiconductors.But for this, firstly we need to calculate the pressure -dependence of lattice constants using Siest

Re: [SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Maria Machon
Dear Mousumi, What you need is a supercell, which you can create with fcbuild or by hand. Each unit cell vector must be repeated an odd number of times, for example 3x3x3. Then tell siesta to displace only the atoms of one unit cell (use MD.FCfirst and MD.FClast). The condition for a good dispersi

[SIESTA-L] variation of lattice constants

2005-05-10 Thread Prof.Dr. Kemal ÇOLAKOĞLU
Dear Siesta users and developers, We would like to see the pressure -dependence of elastic constansts on some semiconductors.But for this, firstly we need to calculate the pressure -dependence of lattice constants using Siesta.How can we enter the pressure to see the effect on energy ? Thanks

Re: [SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Andrei Postnikov
On Tue, 10 May 2005, Mousumi Upadhyay Kahaly wrote: | Dear All, | | I am trying to get phonon dispersion relation for carbon in | diamond structure. | | In order to get the dynamical matrix, I use " MD.TypeOfRun FC " | which prints out one .FC output file. | | The input

Re: [SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Mousumi Upadhyay Kahaly
Dear Maria, Steffi, and all, Thank you very much for your response. I want to calculate the general dispersion relation for my system; not only the phonon modes at Gamma. So, for this, how to use "vibra package"? Secondly, I have seen the output file. The phon

Re: [SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Stephanie Reich
Hi Mousumi, the atoms are moved into positive and negativ directions during the FC run. This double the number of elements in the force constant file (pos and neg are averaged during the vibra run). Just a warning: with the unit cell you can only calculate the phonons at Gamma. If you want dispe

Re: [SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Maria Machon
Dear Mousumi, your calculation is right, just that siesta calculates for positive AND negative displacements (see output file) which are later averaged by vibrator. So you have: 2 atoms x 3 degrees of freedom x 2 signs = 72 Regards, Maria _ María Machón Valbuena Institut für F

[SIESTA-L] Problem in understanding .FC file

2005-05-10 Thread Mousumi Upadhyay Kahaly
Dear All, I am trying to get phonon dispersion relation for carbon in diamond structure. In order to get the dynamical matrix, I use " MD.TypeOfRun FC " which prints out one .FC output file. The input structure has 2 atoms per unit cell and there are 3 degrees of freed

Re: [SIESTA-L] How to Use CG without changing cell ?

2005-05-10 Thread Paulo Cesar Piquini
Dear Chen, try to use MD.VariableCell .false. yours, Paulo Piquini 2005/5/9, Li-Ger Chen <[EMAIL PROTECTED]>: > Dear All : > >I have done some simulation of transition metal dimer . The > conclusion is good when using semicore configuration . But a cruel > problem was rasing : the ce

[SIESTA-L] How to Use CG without changing cell ?

2005-05-10 Thread Li-Ger Chen
Dear All : I have done some simulation of transition metal dimer . The conclusion is good when using semicore configuration . But a cruel problem was rasing : the cell was keeping bigger !! for example , the Nb dimer , initially I set cell be 15*15*15 Ang, that used 108 MB memory ; then when