Dear Roberto, " WARNING: Minimum split_norm parameter: 0.07713. Will not be able to generate orbital with split_norm = 0.07500
See manual for new split options" --> may I ask which Si.psf are you using?. Both Tests\Pseudos\Si.psf and Examples\Vps\Si.psf should work. I could alway get it running, should should see something like below when using TZDP. "Number of atoms, orbitals, and projectors: 2 44 32" the above line was reproduce with the version siesta-trunk-339 with Si example under TZDP. "I could not find in the manual any reference for TZDP basis" --> yes, seems that currently no manual about TZDP. I used to manually set PAO.Basis to use TZDP before if there is no predefined TZDP option. So read manual about PAO.Basis carefully, you can get a idea what is TZDP. siesta version 3 have the option as predefined, that simplified a lot work:-P !---------- to Marcos Veríssimo Alves, Dear Marcos Veríssimo Alves, TZDP is predefined in siesta-3 and siesta-trunk, even TZTP is predefined(thankful to siesta group). Surely siesta-2 has no such option. When you look into the code Src\basis_specs.f, you should see something like below write(6,'(/,2a,/,9(a,/))') . 'size_name: Incorrect basis-size option specified,', . ' active options are:', . ' SZ or MINIMAL', . ' SZP, SZSP, SZ1P, SZP1', $ ' DZ ', $ ' DZP, DZSP, DZP1, DZ1P or STANDARD', $ ' DZDP, DZP2, DZ2P ', $ ' TZ ', $ ' TZP, TZSP, TZP1, TZ1P', $ ' TZDP, TZP2, TZ2P', $ ' TZTP, TZP3, TZ3P' I have used TZDP for quite a while and nothing wrong happened :-P Best Wishes, lukuilin