<div dir="ltr"><div><div>This is a rather complex issue and I am not sure it can be solved in the next few days. If I understand correctly, <br>3D-RISM-SCF modifies the way the self-consistent code works internally, by adding computation of additional <br>quantities inside the self-consistent loop. Until now this kind of changes has been added inside QE directly by <br>the author, but after many uncoordinated additions the result has become a mess. One idea that has been around<br>for a while is to locate some "hooks" in the code where additional computations can be confined; then release the<br>implementation of additional methods (like 3D-RISM-SCF) as "add-ons" that modify QE in those specific points only<br></div><div>(notice the plugins_* subroutines). Unfortunately this is still ongoing (or maybe "notgoing") work. <br><br>My suggestion for the next release is to align 3D-RISM-SCF to the QE version that will be released (this should be easy); <br>to release 3D-RISM-SCF as a modified QE (not yet sure how in practice, if as a patch, or as a bunch of modified routines,<br></div><div>or as new PW/src and Modules/ directories); then, to start seriously to think at how to merge it into QE. <br>Unfortunately, merging takes a lot of time and nobody is really in charge of it (in the future this may change, hopefully).<br><br>About "custom" FFTs: these are used only in hybrid calculations, to speed up the computation of (V_x\psi)(r) using FFTs<br></div>with a grid corresponding to a reduced cutoff (this is 1-2 times ecutwfc, the cutoff for plane waves used in the expansion of \psi(r)=\sum_G\psi(G) e^{iGr}, instead of 4*ecutwfc, needed in principle to perform the exact computation). I am surprised<br></div><div>to hear that this is used in 3D-RISM-SCF (or are you planning to use them in the future)?<br><br></div><div>Paolo<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jun 8, 2015 at 3:38 PM, Filippo Spiga <span dir="ltr"><<a href="mailto:spiga.filippo@gmail.com" target="_blank">spiga.filippo@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Satomichi,<br>
<br>
thank you very much for your quick feedback. I will attempt myself to merge your branch into a local copy of current QE codebase and run the tests. If I get something weird, I will contact you directly. I suggest to sync by email again beginning next week, I will get in touch privately. From my perspective, once the code compiles and is aligned and test are provided then it can be released. I let senior QE developers and PIs comment further.<br>
<br>
Thank you to contributing to Quantum ESPRESSO, your effort is really appreciated!<br>
<br>
Regards,<br>
Filippo<br>
<div class="HOEnZb"><div class="h5"><br>
On Jun 8, 2015, at 1:02 PM, <a href="mailto:nisihara225@gmail.com">nisihara225@gmail.com</a> wrote:<br>
> Dear Dr. Filippo Spiga,<br>
><br>
> the answers to your questions are as follows.<br>
><br>
> > Which QE version is compatible with it?<br>
> The branch of 3D-RISM-SCF is compatible with the Q.E. 5.1.2.<br>
> In more detail, it has branched from the 11516th revision of SVN.<br>
> The URL of the branch is <a href="http://qeforge.qe-forge.org/svn/q-e/branches/espresso-3drismscf" target="_blank">http://qeforge.qe-forge.org/svn/q-e/branches/espresso-3drismscf</a> .<br>
><br>
> > Did you develop 3D-RISM-SCF as external plug-in or directly inside the QE code?<br>
> The 3D-RISM-SCF was implemented directly inside the Q.E. code.<br>
> Source files in Modules/ and PW/ were mainly modified.<br>
><br>
> > Do you have extensive tests to validate your implementation?<br>
> Yes, I prepare some tests or examples:<br>
> /branches/espresso-3drismscf/espresso/PW/examples/RISM_example .<br>
> And I confirm that these examples provide reasonable results.<br>
><br>
> > Do you have one or more reference papers that explains the method utilized?<br>
> Yes, main reference papers are<br>
> H.Sato et al., J. Chem. Phys. 2000, 112, 9463 , and<br>
> A.Kovalenko, F.Hirata, Chem. Phys. Lett. 1998, 290, 237 .<br>
> Some formulas are utilized in the 3D-RISM-SCF, and<br>
> their references are written in comments of corresponding source codes or manuals.<br>
><br>
> > Is your code suitable for general public release under GPL license?<br>
> Yes, my code is based on GPL license (<a href="http://www.gnu.org/copyleft/gpl.txt" target="_blank">http://www.gnu.org/copyleft/gpl.txt</a>).<br>
> I have wrriten so, in header comments of the source codes.<br>
><br>
> > Are you willingness to maintain and take care of bug fixes and improvements of this particular piece of code for at least one year starting from the release date?<br>
> Of course, I will maintain the code.<br>
><br>
> Regards,<br>
> Satomichi Nishihara<br>
<br>
</div></div><div class="HOEnZb"><div class="h5">--<br>
Mr. Filippo SPIGA, M.Sc.<br>
Quantum ESPRESSO Foundation<br>
<a href="http://fspiga.github.io" target="_blank">http://fspiga.github.io</a> ~ skype: filippo.spiga<br>
<br>
«Nobody will drive us out of Cantor's paradise.» ~ David Hilbert<br>
<br>
*****<br>
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<br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><span><font color="#888888">Paolo Giannozzi, Dept. Chemistry&Physics&Environment,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
hone <a href="tel:%2B39-0432-558216" value="+390432558216" target="_blank">+39-0432-558216</a>, fax <a href="tel:%2B39-0432-558222" value="+390432558222" target="_blank">+39-0432-558222</a><br>
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