Re: [Meep-discuss] Question about units in meep
Hello Rui, the only thing happens here is scaling the 4 Maxwell equations under the condition that c0 = 1. The solutions are not unique, you can choose the scaling method, which is more suitable for your problem. (for example, you can let the permittivity as the value in the real world, or keep the length in meter or mm, or if you want to calculate a real current value, you can also keep the current in SI unit). regards On 07/29/2013 01:33 AM, Rui La wrote: Hi meep users, I am new to meep and have some questions about units and sizes in the code of meep. I want to measure the transmission of a silicon plane with the wave of 1000nm. The relationship between frequency and wavelength is wavelength=1/f. So I guess if I assume the 1 in my code equal to 150 nm, the relative wavelength of the source should be 1000/150 = 6.67, so the f should be 1/6.67 = 0.15. Is my calculation correct? What if I set the 1 in my code as 300 nm, that means I need to change my frequency to 1/3.33=0.3. So will the two simulations have same result since I used the different frequency but simulate the same model? Thanks, Rui ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss signature.asc Description: OpenPGP digital signature ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
Re: [Meep-discuss] Compiling libMEEP with embedded C++ compiler
Hi, POSIX is enough. Also Harminv does not need any dependency. Do you have fftw and blas on that architecture? The configurations also can be done manually with config.h Maybe you need to change some pragmas and replace several IO operations. I'v only compiled it with MS Visual Studio, some screenshots can be found in http://www.stud.uni-karlsruhe.de/~uajid/MeepPort/ If you want to try native client it should be also possible. On 08.06.2013 20:01, Fernando Carvalho wrote: I would like to compile it, using a custom compiler for a different architecture. Thus I need to compile all dependencies with this special architecture, which will only provide standard POSIX APIs. Would you mind, helping me find the flags for changing the compiler and removing dependencies on HDF5, LIBCTL and MPI? I'm going to need Harminv, as well, for calculating the quality factor of photonic crystals I'm optimizing. On Sat, Jun 8, 2013 at 12:56 PM, Wu Chuanren wuchuan...@gmail.com mailto:wuchuan...@gmail.com wrote: Hello, what do you mean without local system dependencies ? It is possible to compile it without hdf5, libctl and mpi (that is what i usually do). However you will still need blas/lapack and some printf stuff. Regards 2013/6/8 Fernando Carvalho fernandocarvalhocoe...@gmail.com mailto:fernandocarvalhocoe...@gmail.com: Dear MEEP developers, I would like to compile libmeep with an embedded compiler to run applications in a web browser through Native Client, so I could make my application available to a broader audience. Since, I can rely on the default system libraries, I would like to ask here if someone have ever compiled libmeep without local system dependencies. I really, don't need MPI support, nor libctl; only a quick way to statically link my C++ main application to libmeep is enough to get it running. Many thanks in advance, -- Fernando ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu mailto:meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss -- Fernando signature.asc Description: OpenPGP digital signature ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
Re: [Meep-discuss] Compiling libMEEP with embedded C++ compiler
There is almost no necessary dependency except blas and fftw. I would like to show you the MEEP part, but the files are too big ( 10MB), can not be shared by email. If you do have POSIX system or better GNU tool chain for the cross compiling, just compile fftw as well as blas/lapack at first and call the configuration script of meep with parameters like --without-hdf5 --without-libctl and include some --build and/or --host options for the cross compilation case. So it will get neither hdf5 nor libctl dependencies. MPI is disabled by default. If you have Harminv compiled before, harminv will be automatically detected by the script. If there is no GNU tool chain, you have to configure manually (like the Visual Studio case). Thanks to the developer of Meep, the code is relative clean and understandable. Also the manually configuration is obviously. On 08.06.2013 22:10, Fernando Carvalho wrote: Would you mind sharing with me your full project folder? This could help me a lot understanding MEEP dependencies. On Sat, Jun 8, 2013 at 4:32 PM, Chuanren Wu wuchuan...@gmail.com mailto:wuchuan...@gmail.com wrote: Hi, POSIX is enough. Also Harminv does not need any dependency. Do you have fftw and blas on that architecture? The configurations also can be done manually with config.h Maybe you need to change some pragmas and replace several IO operations. I'v only compiled it with MS Visual Studio, some screenshots can be found in http://www.stud.uni-karlsruhe.de/~uajid/MeepPort/ If you want to try native client it should be also possible. On 08.06.2013 20:01, Fernando Carvalho wrote: I would like to compile it, using a custom compiler for a different architecture. Thus I need to compile all dependencies with this special architecture, which will only provide standard POSIX APIs. Would you mind, helping me find the flags for changing the compiler and removing dependencies on HDF5, LIBCTL and MPI? I'm going to need Harminv, as well, for calculating the quality factor of photonic crystals I'm optimizing. On Sat, Jun 8, 2013 at 12:56 PM, Wu Chuanren wuchuan...@gmail.com mailto:wuchuan...@gmail.com mailto:wuchuan...@gmail.com mailto:wuchuan...@gmail.com wrote: Hello, what do you mean without local system dependencies ? It is possible to compile it without hdf5, libctl and mpi (that is what i usually do). However you will still need blas/lapack and some printf stuff. Regards 2013/6/8 Fernando Carvalho fernandocarvalhocoe...@gmail.com mailto:fernandocarvalhocoe...@gmail.com mailto:fernandocarvalhocoe...@gmail.com mailto:fernandocarvalhocoe...@gmail.com: Dear MEEP developers, I would like to compile libmeep with an embedded compiler to run applications in a web browser through Native Client, so I could make my application available to a broader audience. Since, I can rely on the default system libraries, I would like to ask here if someone have ever compiled libmeep without local system dependencies. I really, don't need MPI support, nor libctl; only a quick way to statically link my C++ main application to libmeep is enough to get it running. Many thanks in advance, -- Fernando ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu mailto:meep-discuss@ab-initio.mit.edu mailto:meep-discuss@ab-initio.mit.edu mailto:meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss -- Fernando -- Fernando signature.asc Description: OpenPGP digital signature ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
