Mailman 3 July 2003 - SciPy-Dev

Debian packages of scipy and f2py
by José Fonseca Oct. 3, 2003

Oct. 3, 2003

I've make Debian packages of scipy and f2py. They are available from my apt-get repository at: http://jrfonseca.dyndns.org/debian/ I referred to Joe Reinhardt's packages http://people.debian.org/~jmr/ but have done these packages from scratch. These come for all python versions in debian unstable (2.1, 2.2 and 2.3). I've run the standard tests successfully but I'd appreciate that problems with these packages to be reported to me [privately] as I'd like to have these on Debian proper at some time. One tricky issue I'd like to address with the scipy and f2py maintainers is the the scipy_distutils. Both scipy and f2py attempt to install to /usr/lib/python*/site-packages/scipy_distutils and at least on Debian this is not admissible so the packages conflict with each other and are mutually exclusive. This is particularly even more annoying for me, since for building scipy f2py is needed, so I need to install and uninstall them as a maniac. Is there any solution that allow both these packages to happily co-exist in a tree without overlapping? Enjoy, José Fonseca PS: Please CC'me on any reply as I'm not subscribed to all these lists.

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matrixmultiply alias
by Pietro Berkes July 25, 2003

July 25, 2003

Hi! I would like to propose a function that could be used as alias for scipy.matrixmultiply (code attached in 'matrixmultiply.py'). The function delegate the work to scipy.dot if the arguments it receives aren't 2D, otherwise it uses the BLAS routine 'gemm'. If BLAS fails, an appropriate error message is raised. The function should now be backward-compatible and is sensibly faster than the original one for matrices larger than 40x40. Here are the benchmarks (the code to perform the benchmarks is included in 'matmult_bench.py'): Multiplying matrices of type f ================================== | contiguous | non-contiguous ---------------------------------------------- size | scipy | matmult | scipy | matmult 20 | 0.11 | 0.24 | 0.11 | 0.24 (secs for 2000 calls) 50 | 0.99 | 0.60 | 1.01 | 0.60 (secs for 2000 calls) 75 | 3.10 | 1.44 | 3.09 | 1.46 (secs for 2000 calls) 100 | 3.64 | 0.80 | 3.62 | 0.83 (secs for 1000 calls) 500 | 5.06 | 0.25 | 5.08 | 0.26 (secs for 4 calls) 1000 | 28.05 | 0.94 | 27.96 | 0.94 (secs for 2 calls) Multiplying matrices of type d ================================== | contiguous | non-contiguous ---------------------------------------------- size | scipy | matmult | scipy | matmult 20 | 0.10 | 0.26 | 0.10 | 0.26 (secs for 2000 calls) 50 | 1.01 | 0.68 | 1.02 | 0.69 (secs for 2000 calls) 75 | 3.44 | 1.87 | 3.48 | 1.91 (secs for 2000 calls) 100 | 3.59 | 1.55 | 3.59 | 1.49 (secs for 1000 calls) 500 | 8.02 | 0.50 | 8.01 | 0.52 (secs for 4 calls) 1000 | 36.31 | 1.86 | 36.15 | 1.83 (secs for 2 calls) Regards, Pietro.

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[ANN] SciPy 03 Workshop - Scientific Computing with Python
by Travis N. Vaught July 25, 2003

July 25, 2003

------------------ SciPy '03 Workshop ------------------ The SciPy '03 Workshop on Scientific Computing with Python is being held at Cal Tech again this year. Online registration is now available. After last year's success, we expect another great turnout with compelling presentations/tutorials. It is a two day workshop held September 11-12 in Pasadena, CA. More information may be found at: http://www.scipy.org/site_content/scipy03 Online registration is available at: https://www.enthought.com/scipy03 Please register early. Last minute registrants will have to suffer the indignity of a handwritten name tag. It currently looks like breakfast (bagels, etc.), lunch and supper will be provided Thursday, and breakfast and lunch will be provided Friday. Discussion about the workshop may be directed to the SciPy-user mailing list (http://www.scipy.org/site_content/MailList) to which you may post messages at scipy-user(a)scipy.org. Presenters: If you would like to present at the workshop, there are two formats: - Lightning Talks: Short (5-15 minute) presentations of a particular scientific problem solved with Python. - Presentations: Traditional presentation format ~45 minute talks. If you would like to present, contact Eric Jones at eric(a)enthought.com. For any other questions, please feel free to call or email Travis Vaught: travis(a)enthought.com, (512)536-1057. You can call the same number to register via phone (Business Hours CST). Links: SciPy.org community site: http://www.scipy.org Workshop Home: http://www.scipy.org/site_content/scipy03 Summary of last year's workshop: http://www.scipy.org/site_content/scipy02/scipy02summary.htm

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Random fixes
by David M. Cooke July 22, 2003

July 22, 2003

Just some stuff I found running pychecker over a few files... -- |>|\/|< /--------------------------------------------------------------------------\ |David M. Cooke http://arbutus.physics.mcmaster.ca/dmc/ |cookedm(a)physics.mcmaster.ca

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gcc 3.2.3 and weave
by Jordan Dawe July 21, 2003

July 21, 2003

I believe that weave is currently broken with gcc-3.2.3--something to do with a change in the definitions of C++ headers. I say this because a) while installing fine, weave's test suite conks out with massive errors, all gcc-related, b) The netcdf library has a similar problem compiling its C++ componets under gcc-3.2.3 and c) the netcdf developers say that it's a problem with changes to the C++ headers in gcc-3.2.3, and have fixed em. Not sure if this is the right place to report this, just thought you might want to know. Jordan

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[Fwd: [SciPy-user] Possible bug in linalg.lu]
by Nils Wagner July 15, 2003

July 15, 2003

Hi all, It would be great, if linalg.lu handles complex matrices as well. Thanks in advance Nils

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you suck
by TBjaded＠aol.com July 12, 2003

July 12, 2003

you filthy swine, i hope you burn in hell!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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- Are you learning ESL or TESL?
by Martin Andrews July 11, 2003

July 11, 2003

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- Are you learning English?
by Martin Andrews July 9, 2003

July 9, 2003

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- Are you learning English?
by Martin Andrews July 9, 2003

July 9, 2003

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