Dear meep users, I have a problem. I want to caculate the Flux spectra. I want meep to accumulate the appropriate field Fourier transforms for nwavelength equally spaced wavelengths covering the wavelength range wcen-df/2 to wcen+df/2. The wavelength is spaced equally instead of frequency. How can I achieve that? Thank you.
Lei Rao > -----原始邮件----- > 发件人: meep-discuss-requ...@ab-initio.mit.edu > 发送时间: 2014年3月15日 星期六 > 收件人: meep-discuss@ab-initio.mit.edu > 抄送: > 主题: meep-discuss Digest, Vol 97, Issue 4 > > Send meep-discuss mailing list submissions to > meep-discuss@ab-initio.mit.edu > > To subscribe or unsubscribe via the World Wide Web, visit > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > or, via email, send a message with subject or body 'help' to > meep-discuss-requ...@ab-initio.mit.edu > > You can reach the person managing the list at > meep-discuss-ow...@ab-initio.mit.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of meep-discuss digest..." > > > Today's Topics: > > 1. Re: meep mpi harminv problem (D.vanOosten) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 14 Mar 2014 07:11:10 +0100 > From: D.vanOosten <d.vanoos...@uu.nl> > To: meep-discuss <meep-discuss@ab-initio.mit.edu> > Subject: Re: [Meep-discuss] meep mpi harminv problem > Message-ID: <udon53o2l6ov482d6pw7q6y6.1394777300...@email.android.com> > Content-Type: text/plain; charset="utf-8" > > Hi. I think you are right about the synchronisation. I tried outputting the > field after the harminv, that does make it better. I get the problem less > often. Perhaps I should do something computationally expensive. Or does > anyone what the all_wait call is in the scheme interface? > > Best, > Dries > > -------- Original message -------- > From: Filip Dominec <filip.domi...@gmail.com> > Date: 13/03/2014 09:01 (GMT+01:00) > To: "Oosten, D. van (Dries)" <d.vanoos...@uu.nl>,meep-discuss > <meep-discuss@ab-initio.mit.edu> > Subject: Re: [Meep-discuss] meep mpi harminv problem > > Hi, it appears to me that harminv may not use the MPI synchronisation > at its end. If this is the case, it could result in? a race condition, > when one instance of harminv ends the multithreaded program, while the > second one is still running. > > I suggest to add some field-manipulating function at the very end of > your program, so that all threads have to wait for each other and > finish simultaneously. My python-meep scripts have meep.all_wait() at > their last line, and probably a similar function exists in scheme. > > Does it help? > > Regards, > Filip > > 2014-03-12 20:32 GMT+01:00, Oosten, D. van (Dries) <d.vanoos...@uu.nl>: > > Sorry guys, but just to clarify, mpirun often says things like > > > > -------------------------------------------------------------------------- > > mpirun has exited due to process rank 5 with PID 8389 on > > node workstation exiting without calling "finalize". This may > > have caused other processes in the application to be > > terminated by signals sent by mpirun (as reported here). > > -------------------------------------------------------------------------- > > > > does that clarify things for anyone? > > > > > > ________________________________________ > > From: Oosten, D. van (Dries) > > Sent: Wednesday, March 12, 2014 8:20 PM > > To: meep-discuss@ab-initio.mit.edu > > Subject: meep mpi harminv problem > > > > Hi guys, > > > > I have been struggling with the following issue. When I use harminv to find > > eigenmodes in meep, it is often unreliable when I use it through mpirun. > > This is especially the case when the workstation we run meep on is under > > heavy load. It seems to me that the process get killed by mpirun before they > > can give their results. Could this be the case and if so, what tests can I > > run to track this problem down? > > > > Thanks in advance! > > > > best, > > Dries > > > > _______________________________________________ > > meep-discuss mailing list > > meep-discuss@ab-initio.mit.edu > > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://ab-initio.mit.edu/pipermail/meep-discuss/attachments/20140314/4bea07c5/attachment-0001.html> > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > meep-discuss mailing list > meep-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > > ------------------------------ > > End of meep-discuss Digest, Vol 97, Issue 4 > ******************************************* _______________________________________________ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
