hi Luis, thanks for the code; I'll definitely be looking into it soon, since the SLEPc routines seem to be gobbling more memory than I'd like... harumph.
marmosets, Bryan On Fri, Dec 11, 2015 at 4:47 PM, Luis Mochan <[email protected]> wrote: > On Wed, Dec 09, 2015 at 09:52:22AM +0100, Bryan Jurish wrote: > > morning all, > > > > I've just released a new module PDL::SVDSLEPc > > ... > > <https://metacpan.org/release/PDL-SVDLIBC> on my machine here (I believe > > it's using ARPACK under the hood, which was mentioned on this list a few > > years back, but my searches have failed to turn up any PDL-ARPACK > interface > > code). > > I used arpack in May 2014 and posted a message (below) and an example > (attached) to the list: > > On Mon, 12 May 2014 14:16:09 -0500, Luis Mochan wrote: > > > I once made some pdl code that interfaces with ARPACK to calculate > > photonic bands, but it may be used for eigenvalues of sparse matrices > > or of arbitrary functions which perform a linear transformation (i.e., > > not necessarily using a matrix to respresent the transformation). I > > enclose an example that calculates the eigenvalues of the a second > > diference operator (discrete analogy to the second derivative, as in > > 1D phonon calculations) and compares with the analytical solution (I > > don't remember the details). Hope the interface proves useful. > > Best regards, > Luis > > -- > > o > W. Luis Mochán, | tel:(52)(777)329-1734 /<(*) > Instituto de Ciencias Físicas, UNAM | fax:(52)(777)317-5388 `>/ /\ > Apdo. Postal 48-3, 62251 | (*)/\/ \ > Cuernavaca, Morelos, México | [email protected] /\_/\__/ > GPG: 791EB9EB, C949 3F81 6D9B 1191 9A16 C2DF 5F0A C52B 791E B9EB > > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > pdl-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/pdl-general > > -- Bryan Jurish "There is *always* one more bug." [email protected] -Lubarsky's Law of Cybernetic Entomology
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