May 23, 2012 Sparse matrix solver libraries | ||||
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Hi All. OK. I'm sold on using D to develop an experimental hydrologic modeling code, but I need a sparse linear algebra package. Has anyone either developed such a package in D or linked to an existing C or C++ library? There are a number of existing free libraries out there, and I hate to reinvent the wheel. If no such D library interface exists, I'm happy to work on one as a community project, but I suspect I'll need quite a bit of help. Is anybody game for such a project? THANKS! --vic |

May 23, 2012 Re: Sparse matrix solver libraries | ||||
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Posted in reply to Vic Kelson | You might want to check out https://github.com/cristicbz/scid |

May 23, 2012 Re: Sparse matrix solver libraries | ||||
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Posted in reply to Vic Kelson | ```
On Wed, 23 May 2012 16:16:19 +0200, Vic Kelson wrote:
> Hi All.
>
> OK. I'm sold on using D to develop an experimental hydrologic modeling code, but I need a sparse linear algebra package. Has anyone either developed such a package in D or linked to an existing C or C++ library? There are a number of existing free libraries out there, and I hate to reinvent the wheel. If no such D library interface exists, I'm happy to work on one as a community project, but I suspect I'll need quite a bit of help. Is anybody game for such a project?
>
> THANKS!
> --vic
I work for an economic modeling firm and we use a lot of D. We generally just link against BLASPack or Intel MKL for our linear algebra needs (linking C libs in D is really easy).
D's compile-time code generation abilities make the thought of a native D solution rather interesting, but it would probably take years for such a project to reach the maturity level of existing libraries.
Justin
``` |

May 23, 2012 Re: Sparse matrix solver libraries | ||||
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Posted in reply to Trass3r | ```
On Wednesday, 23 May 2012 at 15:27:54 UTC, Trass3r wrote:
> You might want to check out https://github.com/cristicbz/scid
I had found scid. For some of my work, BLAS and LAPACK are fine (full matrices), and I can use it for small problems on this project. But for large problems, I need a sparse solver, like PetSC or other solvers.
THANKS!
``` |

May 23, 2012 Re: Sparse matrix solver libraries | ||||
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Posted in reply to Justin Whear | ```
On Wednesday, 23 May 2012 at 16:12:40 UTC, Justin Whear wrote:
> On Wed, 23 May 2012 16:16:19 +0200, Vic Kelson wrote:
>
>> Hi All.
>>
>> OK. I'm sold on using D to develop an experimental hydrologic modeling
>> code, but I need a sparse linear algebra package. Has anyone either
>> developed such a package in D or linked to an existing C or C++ library?
>> There are a number of existing free libraries out there, and I hate to
>> reinvent the wheel. If no such D library interface exists, I'm happy to
>> work on one as a community project, but I suspect I'll need quite a bit
>> of help. Is anybody game for such a project?
>>
>> THANKS!
>> --vic
>
> I work for an economic modeling firm and we use a lot of D. We generally
> just link against BLASPack or Intel MKL for our linear algebra needs
> (linking C libs in D is really easy).
>
> D's compile-time code generation abilities make the thought of a native D
> solution rather interesting, but it would probably take years for such a
> project to reach the maturity level of existing libraries.
>
> Justin
Alas, I'm working on an experimental code, and if it's a success, I'll give it away. I can't afford Intel MKL for a free project.
I agree that a D implementation would be cool, but perhaps I'll just bite the bullet and try to convert headers for an existing library. Never done that before...
Thanks!
``` |

May 23, 2012 Re: Sparse matrix solver libraries | ||||
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Posted in reply to Vic Kelson | ```
> I agree that a D implementation would be cool, but perhaps I'll just bite the bullet and try to convert headers for an existing library. Never done that before...
It's not that hard to convert C headers.
Just put an extern(C): at the top of the module, run some regex's to convert common patterns and do the rest manually.
Guess the most work is converting preprocessor stuff.
``` |

May 24, 2012 Re: Sparse matrix solver libraries | ||||
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Posted in reply to Vic Kelson | ```
Vic Kelson wrote:
> On Wednesday, 23 May 2012 at 15:27:54 UTC, Trass3r wrote:
> >You might want to check out https://github.com/cristicbz/scid
>
> I had found scid. For some of my work, BLAS and LAPACK are fine (full matrices), and I can use it for small problems on this project. But for large problems, I need a sparse solver, like PetSC or other solvers.
>
> THANKS!
Is it feasible to integrate a sparse solver as backend in SciD? This way sparse and dense operations are unified in one library.
Jens
``` |