I tried <div><br></div><div> !&PBE_HOLE_T_C_LR<br> ! CUTOFF_RADIUS 6.0<br> ! SCALE_X 0.25<br> !&END PBE_HOLE_T_C_LR</div><div><br></div><div>in &XF_FUNCTIONAL and</div><div><br></div><div> &HF<br> FRACTION 0.25<br> &SCREENING<br> EPS_SCHWARZ 1.0E-6 !DEFAULT 1.0E-10, TYPICAL -6 - -9, FOR STABLE HFX<br> !SCREEN_ON_INITIAL_P T !FOR A GOOD INITIAL GUESS FROM A .WFN<br> &END SCREENING<br> &INTERACTION_POTENTIAL<br> POTENTIAL_TYPE TRUNCATED !TRUNCATED 1/r (Coulomb) POTENTIAL FOR SPEED UP<br> CUTOFF_RADIUS 6.0 !SHOULD BE < HALF THE CELL<br> T_C_G_DATA /home/lsd/cp2k_data/t_c_g.dat !DATA FOR THE EVAL OF TRUNCATED GAMMA FUNC<br> &END INTERACTION_POTENTIAL</div><div><br></div><div>in &XC and there is no significant (if any) speed up.</div><div><br></div><div>I even played with the CUTOFF_RADIUS (values from 2.0 to 6.0) and nothing changes.</div><div><br></div><div>Am I missing something ?</div><div><br></div><div>Best Regards,</div><div>Dobromir<br><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Tuesday, December 20, 2022 at 8:31:44 PM UTC+2 DMT wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hello,<div><br></div><div>I have heard that there must be a way to speed HF (for hybrid DFT methods) up. Can you help me with that ?</div><div><br></div><div>Best Regards,</div><div>Dobromir</div></blockquote></div>
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