LAPACK 3.4.0 and ScaLAPACK 2.0.0 released

[admin]

Dear LAPACK and ScaLAPACK users,

LAPACK 3.4.0 and ScaLAPACK 2.0.0 were released on November 11, 2011.

What's new in LAPACK 3.4.0:

• xGEQRT: QR factorization (improved interface). Contribution by Rodney James (UC Denver). xGEQRT is analogous to xGEQRF with a modified interface which enables better performance when the blocked reflectors need to be reused. The companion subroutines xGEMQRT apply the reflectors.

• xGEQRT3: recursive QR factorization. Contribution by Rodney James (UC Denver). The recursive QR factorization enables cache-oblivious and enables high performance on tall and skinny matrices. See reference [1] below.

• xTPQRT: Communication-Avoiding QR sequential kernels. Contribution by Rodney James (UC Denver). These subroutines are useful for updating a QR factorization and are used in sequential and parallel Communication Avoiding QR. These subroutines support the general case Triangle on top of Pentagon which includes as special cases so-called Triangle on top of Triangle and Triangle on top of Square. This is the right-looking version of the subroutines and the subroutines are blocked. The T matrices and the block size are part of the interface. The companion subroutines xTPMQRT apply the reflectors.

• Doxygen documentation. LAPACK routine documentation has never been more accessible. See http://www.netlib.org/lapack/explore-html/.

What's new in ScaLAPACK 2.0.0:

• PxHSEQR: Nonsymmetric Eigenvalue Problem. Contribution by Robert Granat, Bo Kågström, Meiyue Shao (Umeå University and HPC2N), and Daniel Kressner (École Polytechnique Fédérale de Lausanne). Compute the eigenvalues of a nonsymmetric real matrix. Implement the parallel distributed Hessenberg QR algorithm with the small bulge multi-shift QR algorithm together with aggressive early deflation. See reference [1] below.

• PxSYEVR/PxHEEVR: MRRR (Multiple Relatively Robust Representations) algorithm. Contribution by Christof Voemel. Compute the eigenvalues of a symmetric/Hermitian matrix. Implement the parallel distributed MRRR algorithm. See reference [2] below.

• BLACS revamping. Contribution by Rodney James (UC Denver).

The LAPACK and ScaLAPACK team would like to thank all the users who contributed to this release.
(And bigger thank to those who not only provided bug report but also bug patches!)

For details, please see
- http://netlib.org/scalapack/scalapack-2.0.0.html
- http://www.netlib.org/lapack/lapack-3.4.0.html

To download ScaLAPACK 2.2.0: http://netlib.org/scalapack/scalapack.tgz

To download LAPACK 3.4.0: http://www.netlib.org/lapack/lapack.tgz

For support, you can use either the LAPACK/SCALAPACK forum at http://icl.cs.utk.edu/lapack-forum/ or the LAPACK mailing list lapack@cs.utk.edu

Regards,
The LAPACK and ScaLAPACK team

[CyLith]

The new Doxygen documentation's File List loads incredibly slowly in the latest Mozilla Firefox on Win7, to the point that it essentially freezes the browser for me. It seems to be reasonably responsive in Chrome. Opera and IE seem to be somewhere in the middle. Is there a way to split up the list, or make it non-javascript? (god help me if I accidentally expand the listing) Similarly, it is quite difficult to navigate the SRC/ directory with 1680 files in it, perhaps categorizing them would be helpful.

[admin]

Look here: http://www.netlib.org/lapack/explore-html/modules.html

I will talk with the Doxygen guys about your problem with firefox
Julie

[codymconnors]

The new Doxygen documentation's Computer file Record plenty extremely gradually in the newest Mozilla Firefox on Win7, to the point that it basically gets frozen the web browser for me. It seems to be reasonably sensitive in Firefox. Safari and IE seem to be somewhere in the center. Is there a way to divided up their list, or make it non-javascript? (god help me if I unintentionally increase the listing) In the same way, it is quite difficult to get around the SRC/ listing with 1680 information in it, perhaps categorizing them would be beneficial.