<div dir="ltr"><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>One should obtain the same numbers - within the errors due to roundoff, though - in serial, OpenMP, MPI execution, and on different machines, and with different compilers and mathematical libraries.</div></div></blockquote><div><br></div><div class="h5">... actually, only at exact convergence, at least when using default wavefunction initialization: small differences come from different randomization of atomic wavefunctions. These however disappear as convergence is made tighter (but sometimes they don't)<br><br></div></div></div><div class="gmail_extra">Paolo<br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>Phone +39-0432-558216, fax +39-0432-558222<br><br></div></div></div></div></div>
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