I'm confused. Your order is that espresso must be implemented in virtualbox? I have worked with this software. and the loss of efficiency is very high. Efficiency is very important in my work. In any case, I am willing to cooperate with you to test its performance.
best regards On Thu, Sep 4, 2014 at 11:19 PM, Axel Kohlmeyer <akohlmey at gmail.com> wrote: > On Thu, Sep 4, 2014 at 8:19 PM, siddheshwar chopra <sidhusai at gmail.com> > wrote: > > Dear Sir, > > I willing to run QE on my Windows xp (with 2 GB RAM and dual core 2.7 > GHz > > cpu) and windows 7 (with 2GB RAM and i3 2.2 GHz ) machines.. > > Sir I would be glad if you could clarify one doubt.. Is will there be any > > DEGRADATION of QE performance on windows, as compared to linux? > > I have used cygwin and virtualbox and found severe performance > degradations. > > the executables are compiled with a mingw cross-compiler on a linux > machine. so the performance should be equivalent to what you achieve > with gfortran and gcc on a linux box. compared to cygwin it is likely > a bit faster. at least that is what people found with a different > package. > > there are a few things where windows is better than linux and some > other things where it is worse. it depends a lot on the specific > windows version. with numerical codes like QE, often the compiler and > optimized BLAS/LAPACK libraries is the biggest impact. with virtual > machines, the problem is often the limited amount of RAM. if you care > about performance, obtain an academic license for the intel compilers > with MKL and run on a linux machine. it is well worth the money (often > cheaper than the equivalent CPU upgrade) > > the primary motivation to provide windows binaries is to make QE more > accessible for classrooms and tutorials and for people that want to > run tests on their own machine (not everybody runs linux on their > laptops) before sending larger versions of the same calculation to a > cluster or a supercomputer. so the best performance is not the highest > priority. > > if you are able to make properly documented comparative benchmarks, > i'd be happy to get to know pass that information on to other users in > the documentation of the windows port. > > > > > > I would eagerly wait for your mail regarding the download links. > > > > Kind Regards, > > > > On 04-Sep-2014 11:27 pm, "Axel Kohlmeyer" <akohlmey at gmail.com> wrote: > >> > >> On Thu, Sep 4, 2014 at 7:52 PM, ehsan targholi <targholi at gmail.com> > wrote: > >> > Hi > >> > Dear axel > >> > It's a very interesting idea. I'm interested to running it in Windows > >> > and in > >> > parallel version. What should I do? > >> > >> just wait for my e-mail telling you where to find the temporary > >> repository and the installer packages. > >> > >> what kind/version of windows are you running and how much RAM and how > >> many CPU cores do you have? > >> > >> > > >> > > >> > best regards > >> > E.Targholi > >> > > >> > > >> > > >> > On Thu, Sep 4, 2014 at 9:14 PM, Axel Kohlmeyer <akohlmey at gmail.com> > >> > wrote: > >> >> > >> >> hi everybody, > >> >> > >> >> following up on my previous request last fall, i am looking again for > >> >> folks that are interested to run quantum espresso on windows? > >> >> > >> >> last fall some of you helped to improve the development version of QE > >> >> so it can be compiled and run on windows machine (in serial and > >> >> parallel). now i finally found the time to update this to the recent > >> >> release 5.1 and built a new set of packages. before we unleash those > >> >> to the general audience, and particularly inexperienced QE noobies, i > >> >> want to make certain that everything works reasonably well. > >> >> > >> >> i only have very limited access to windows (on a virtual machine) and > >> >> practice with it (the compilation is done with a cross compiler on > >> >> linux) and thus cannot test very thoroughly (and don't have the > time), > >> >> so it seem just logical to farm this out to the QE community. > >> >> > >> >> if you are still interested, please contact me off-list with a short > >> >> description of what kind of setup you are willing to test on (CPU, > >> >> windows version, 32-bit or 64-bit, MPI or serial or both). i will > then > >> >> point you to a webpage with some instructions and a link to a > >> >> repository where you can download the new packages as soon as they > are > >> >> available. > >> >> > >> >> thanks, > >> >> axel. > >> >> > >> >> -- > >> >> Dr. Axel Kohlmeyer akohlmey at gmail.com http://goo.gl/1wk0 > >> >> College of Science & Technology, Temple University, Philadelphia PA, > >> >> USA > >> >> International Centre for Theoretical Physics, Trieste. Italy. > >> >> _______________________________________________ > >> >> Pw_forum mailing list > >> >> Pw_forum at pwscf.org > >> >> http://pwscf.org/mailman/listinfo/pw_forum > >> > > >> > > >> > > >> > _______________________________________________ > >> > Pw_forum mailing list > >> > Pw_forum at pwscf.org > >> > http://pwscf.org/mailman/listinfo/pw_forum > >> > >> > >> > >> -- > >> Dr. Axel Kohlmeyer akohlmey at gmail.com http://goo.gl/1wk0 > >> College of Science & Technology, Temple University, Philadelphia PA, USA > >> International Centre for Theoretical Physics, Trieste. Italy. > >> > >> _______________________________________________ > >> Pw_forum mailing list > >> Pw_forum at pwscf.org > >> http://pwscf.org/mailman/listinfo/pw_forum > > > > > > _______________________________________________ > > Pw_forum mailing list > > Pw_forum at pwscf.org > > http://pwscf.org/mailman/listinfo/pw_forum > > > > -- > Dr. Axel Kohlmeyer akohlmey at gmail.com http://goo.gl/1wk0 > College of Science & Technology, Temple University, Philadelphia PA, USA > International Centre for Theoretical Physics, Trieste. Italy. > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://pwscf.org/mailman/listinfo/pw_forum > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20140905/7f962a4e/attachment.html
