Hi Marcel, I think it might be helpful to paste your code in the message. My first thought would be to check the PML thickness and the material type on both sides of the slab. best, Boshen
On Sun, Apr 24, 2011 at 12:00 PM, <[email protected]>wrote: > Send meep-discuss mailing list submissions to > [email protected] > > 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 > [email protected] > > You can reach the person managing the list at > [email protected] > > 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-discuss Digest, Vol 62, Issue 4 (Boshen Gao) > 2. L5 cavity simulation in 3D (Marcel Spurny) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 23 Apr 2011 16:19:51 -0400 > From: Boshen Gao <[email protected]> > Subject: Re: [Meep-discuss] meep-discuss Digest, Vol 62, Issue 4 > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset="iso-8859-1" > > Hi Giovanni, > Thanks so much! It works now! I just uninstall all the mpi related packages > and re-install just openmpi and meep-openmpi 1.1.1-7. Now it works > perfectly. > (And it's a surprise to find out that you are replying to my message. Come > back to visit when you have time!) > > Best regards > Boshen > > On Sat, Apr 23, 2011 at 12:00 PM, <[email protected] > >wrote: > > > Send meep-discuss mailing list submissions to > > [email protected] > > > > 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 > > [email protected] > > > > You can reach the person managing the list at > > [email protected] > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of meep-discuss digest..." > > > > > > Today's Topics: > > > > 1. How to configure Meep-MPI for single Intel i7 CPU? (Boshen Gao) > > 2. How to configure Meep-MPI for single Intel i7 CPU? (gpipc) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Fri, 22 Apr 2011 19:32:00 -0400 > > From: Boshen Gao <[email protected]> > > Subject: [Meep-discuss] How to configure Meep-MPI for single Intel i7 > > CPU? > > To: [email protected] > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Hi all, > > I am using meep-mpi to simulate some simple 3-D SOI photonic crystal > based > > structures on my PC. It has an i7-930 Quad-core CPU @ 4 GHz. My problem > is, > > while I use command > > > > mpirun -np 4 meep-mpi *****.ctl > > > > each core will run the code alone, they do not share the work. So each > step > > will be run four times, a code that took 90 sec on one core now takes > more > > than 100 sec using all four cores. Now I'm running resolution 32 codes > that > > takes more than 30 hours. In this case, parallel computation will be of > > great help. Has anyone met similar problems or do you have any hints on > > what > > might go wrong, please? > > > > Thank you. > > > > Boshen Gao > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > http://ab-initio.mit.edu/pipermail/meep-discuss/attachments/20110422/224eda59/attachment.html > > > > > > > ------------------------------ > > > > Message: 2 > > Date: Sat, 23 Apr 2011 11:27:51 +0200 > > From: gpipc <[email protected]> > > Subject: [Meep-discuss] How to configure Meep-MPI for single Intel i7 > > CPU? > > To: <[email protected]> > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset=UTF-8 > > > > On Fri, 22 Apr 2011 19:32:00 -0400, Boshen Gao > > <[email protected]> wrote: > > > Hi all, > > > I am using meep-mpi to simulate some simple 3-D SOI photonic crystal > > based > > > structures on my PC. It has an i7-930 Quad-core CPU @ 4 GHz. My problem > > is, > > > while I use command > > > > > > mpirun -np 4 meep-mpi *****.ctl > > > > > > each core will run the code alone, they do not share the work. So each > > step > > > will be run four times, a code that took 90 sec on one core now takes > > more > > > than 100 sec using all four cores. Now I'm running resolution 32 codes > > that > > > takes more than 30 hours. In this case, parallel computation will be of > > > great help. Has anyone met similar problems or do you have any hints on > > > what > > > might go wrong, please? > > > > > > Thank you. > > > > > > Boshen Gao > > > > > > Hi, > > it happened to me too time ago and as far as I can recall in my csae it > > was because I had first installed openmpi, then the ubuntu package for > > meep-mpi which was (the version that I installed, I did not check for the > > present version) based on MPICH2 and I guess the two different MPI > programs > > interfered with each other somehow. > > > > I solved my problem by 1) uninstalling both openmpi and meep-mpi 2) > > reinstalling openmpi 3) compiling meep-mpi from source (as I wanted to > use > > openmpi, which I read somewhere is a little better for multi-core, I may > be > > wrong though). You may check whether this is the case for you too. > > > > Cheers, > > > > Giovanni > > > > -- > > ================================================ > > Giovanni Piredda > > Postdoc - AK Hartschuh > > > > Phone: ++49 - (0) 89/2180-77601 > > Fax.: ++49 ? (0) 89/2180-77188 > > Room: E2.062 > > ---------------------------------------- > > Message sent by Cup Webmail (Roundcube) > > > > > > > > > > ------------------------------ > > > > _______________________________________________ > > meep-discuss mailing list > > [email protected] > > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > > > > End of meep-discuss Digest, Vol 62, Issue 4 > > ******************************************* > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://ab-initio.mit.edu/pipermail/meep-discuss/attachments/20110423/3403057a/attachment.html > > > > ------------------------------ > > Message: 2 > Date: Sat, 23 Apr 2011 21:24:51 +0100 > From: Marcel Spurny <[email protected]> > Subject: [Meep-discuss] L5 cavity simulation in 3D > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-15; format=flowed > > Hi everyone, > I am trying to simulate L5 cavities in meep. The 2D simulations work > very well (I excite Ey and collect Ey, as well). But when I extend the > model to 3D by setting the slab height to (/220 414) and the > computational cell height to 4*slabheight I can't find a resonant mode. > I also tried to switch off the sub-pixel averaging but that doesn't help. > Any ideas what I am doing wrong? > Cheers, > Marcel > > > > ------------------------------ > > _______________________________________________ > meep-discuss mailing list > [email protected] > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > > End of meep-discuss Digest, Vol 62, Issue 5 > ******************************************* >
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