Re: [QE-users] Using symmetry in input structure description

2020-12-06 Thread Lorenzo Paulatto
So generally the usage of input files generated by Material Cloud and BURAI GUI should be avoided, because they do not give the correct atom number and Bravais lattice and leed to longer computation times (not significant in my case, critical for more complex calculations). The reason is s

Re: [QE-users] Using symmetry in input structure description

2020-12-06 Thread Husak Michal
Thank you for the answer ... To be 100% sure I had tested on diamond the computational time (all parameters set identical). 1) Material cloud generated file based on ibrav = 0 definition (BURAI generates the same) scf time 22.11 sec 2) The same file but diamond was described by space group

Re: [QE-users] Using symmetry in input structure description

2020-12-05 Thread Lorenzo Paulatto
Hello Michal, the pw.x code always uses symmetry to reduce the number of k-points, never to reduce the number of atoms. Whatever it does, it profusely writes to output (especially if you set verbosity='high'. regards -- Lorenzo Paulatto On Sat, 5 Dec 2020, 11:13 Husak Michal, wrote: > Hi > >

[QE-users] Using symmetry in input structure description

2020-12-05 Thread Husak Michal
Hi I have a question to QE developers. The Material Cloud as well as BURAI gui generate QE files without information about the cell centering (Bravais lattic). As the result QE calculates with 2-4x more atoms than neccesary in the corresponding primitive non-centered unit cell ... Does it realy