Puma-EM / News: Recent posts

Hi all,

I introduced the phase correction of the currents from the previous solution angle in the monostatic RCS. In my small number of tests, it produces an amazing reduction in the number of iterations needed to arrive at a solution.

Don't forget to try different solvers such as FGMRES if your convergence is really slow.

Download and try it out!

Ides

Hi all,

it is my pleasure to release version 0.6.6. of the program. Contains important fix for mesh processing when dealing with very large targets. Thanks to this fix, Puma was able to solve a problem involving 220 million of unknowns (thanks to Adam Zdunek for performing the test).

The mesh reading and processing routine now seems to work for target involving more than 450 million of unknowns.

Download and try it out!... read more

Hi all,

it is my pleasure to release version 0.6.5 of the program. An important fix regards multiple integer overflows when dealing with very large targets. A big thanks to Adam Zdunek for spotting it and helping me to solve it! Thanks to this integer fix, Puma was able to solve a problem involving 153 million of unknowns like a charm.

Otherwise usual small fixes.

Download and try it out!

Ides

Hi all,

it is my pleasure to release this new version of the program. Mainly fixes and enhancements related to output files.

Take it and try it!

Ides

Hi all,

corrected a long-standing sign error in the near field computations.

Download and try it out!

Hi all,

small, incremental things for MLFMA module. Corrected testVolakisMoM.py, now will give the same results as MLFMA.

Those who want to dabble with dielectrics can check out code/MOM.py. To run, type "python MOM.py".

MOM.py and testVolakisMoM.py will only work with python 2. I know, lame, but complain to the guys producing Scipy.

Download and try it out!

Ides

Hi all,

Python 3 support, antenna pattern, 3D figures, new compilation flags, possibility of using vendor-supplied lapack... Worth a release!

Download and try it out!!

Ides

Hi all,

small, incremental changes, but worthed a release. Might be a bit slower/memory-hungry, as precision has been increased a bit.

Cheers

Ides

Hi all,

Latest version has scipy.weave scrapped. No more problems with C++ to Python and back.

Try it out!

Hi all,

The fastest Puma ever!! Download and try it out!

Ides

Hi all,

mainly small performance fixes, lots of behind-the-curtain stuff. Feedback me if you have problems.

Download and try it out!

Ides

Hi all,

updated support, some performance fixes.

Enjoy!

Ides

Hi all,

Ubuntu 12.04 support, and correction of GiD reading.

Enjoy!

Ides

Hi all,

corrected unforgivable bugs at install, plus a couple other things like saving currents for visualization with GMSH.

Enjoy!

Ides

Hi all,

more performance for large problems, some bugs corrected. Maintenance release.

Download and try it out!

ides

Hi all,

a bit more performance, some bugs corrected, a complete local installation guide, these are some features of this maintenance release.

Download and try it out!

ides

Hi all,

after 6 months, here is the new release. Performance enhancements and new features, more platforms supported. However, Ubuntu 11.10 is NOT supported, due to bugs in scipy.weave module.

Download and try it out!!

Ides

Hi all,

Work on Puma-EM is still ongoing. Right now, the work focuses on significant enhancement of memory management for clusters and multi-core machines. This is the road ahead, and there is no escaping it.

The aim is to break the 100 million unknowns barrier on a "modest" cluster (16-24 cores, 80 GBytes RAM, 300 GBytes disk space). When this is done (count 1-2 months), we will move on to
1) larger problems (scalability issues to iron out)
2) new excitation modes (delta gap)
3) antenna radiation patterns
4) dielectrics... read more

Incremental release with many bug fixes and performance enhancements. No new features.

Download and try it out!

Incremental release with many bug fixes, performance enhancements and installation support.

Download and try it out!

Always after a new release do I find bugs!! Hopefully this one is better!

Also added: possibility to define the observation points through a user-supplied file; possibility to save the currents at the centroids of each triangle.

Download and try it out!

Ides

Hi all,

Here it is, finally. This version improves significantly the capabilities of the code, mainly in the area of target excitation and mesh support:

• possibility for excitation by a plurality of dipoles
• magnetic dipoles
• support for ANSYS and GiD mesh formats
• a user guide

Download and try it out!

Ides

Hi all,

project has slowed down a lot because of an unfortunate event (google "iran releases 3 belgians") that took me away for 4 months. Add to this the fact that I just changed my job, and you will understand why things went slowly.

But I'm back on track. Right now I'll be focusing on implementing compatibility for other mesh formats, so that you can use your favorite mesher. I will also add capabilities for antenna pattern calculation. That's for the near future (2-3 months.)... read more

Hi all,

the project has slowed a bit, because of my removal to a new country and job.

However, development is still going on. Version 0.6 will be out by the end of September (vacations needed), and will contain support for mesh formats other than GMSH. This will allow you to use your favourite CAD tool, mesh your target in a supported format, and run Puma on it!

On another register, a user is currently testing Puma on really big targets: 90+ million of unknowns! Keep tuned if you want to know when Puma breaks the magic 100 million barrier...... read more

Hi all,

the code is now hosted on SourceForge, using the git Code Management System. You can now freely browse and get the code.

"Classic" users however, may want to just download the official releases, since the git code may have brokenness in it.

git has been created by Linus Torvalds himself, to help him and the community with the development of the Linux kernel.

Have fun!

Ides