there are accurate algorithms which are not built upon diagonalization.
There are also candidates in control systems, such as the discrete Lyapunov
solver (a x a' - x + b = 0), which has a loop, but I don't know how broadly
useful it is. Anyone care to put forward an argument for any of these?
I'm assuming that sparse methods are beyond the scope of LAPACK.
And fft, filtering, convolution, optimization, special functions, sorting,
random number generation, quadrature, interpolation, ...
Paul Kienzle [EMAIL PROTECTED]
On Jun 1, 2004, at 5:30 PM, Jason Riedy wrote:
[mailed jointly to [EMAIL PROTECTED], [EMAIL PROTECTED] to reach users with relevant experience. watch where your replies go. what would make using LAPACK and ScaLAPACK easier for Octave and R developers? -- ejr, not subscribed]
We plan to update the LAPACK and ScaLAPACK libraries and would like to have
feedback from users on what functionalities they think are missing and would
be needed in order to make these libraries more useful for the community. We
invite you to enter your suggestions in the form below. It would be most
useful to have input by June 16th, although we would welcome your input at
any time.
Both LAPACK and ScaLAPACK provide well-tested, open source, reviewed code
implementing trusted algorithms that guarantee reliability, efficiency and
accuracy. Any new functionality must adhere to these standards and should
have a significant impact in order to justify the development costs. We are
also interested in suggestions regarding user interfaces, documentation,
language interfaces, target (parallel) architectures and other issues, again
provided the impact is large enough.
We already plan to include a variety of improved algorithms discovered over
the years by a number of researchers (e.g. faster or more accurate
eigenvalue and SVD algorithms, extra precise iterative refinement, recursive
blocking for some linear solvers, etc.). We also know of a variety of other
possible functions we could add (e.g. updating and downdating
factorizations), but are uncertain of their impact.
Please see http://icl.cs.utk.edu/lapack-survey.html for the survey. We would like to have your input by June 16th, 2004.
Regards, Jack Dongarra, Jim Demmel, and Sven Hammarling
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