Release date: Fr 04/20/12.

This material is based upon work supported by the National Science Foundation and the Department of Energy under Grant No. NSF-OCI-1032861, NSF-CCF-00444486, NSF-CNS 0325873, NSF-EIA 0122599, NSF-ACI-0090127, DOE-DE-FC02-01ER25478, DOE-DE-FC02-06ER25768.

LAPACK is a software package provided by Univ. of Tennessee, Univ. of California, Berkeley, Univ. of Colorado Denver and NAG Ltd..

1. Support and questions:

http://icl.cs.utk.edu/lapack-forum/

2. LAPACK 3.4.1: What’s new

IMPORTANT

This is just a BUG FIX release that includes also some improvement the CMAKE build system.

3. External Contributors

  • CMAKE team

  • Mick Pont (NAG)

4. Thanks

Thanks for bug-report/patches/suggestions to: Hong Bo Peng (IBM) Ake Sandgren (Umea University and HPC2N), Marco (from the User Forum), Pauli Virtanen (scipy team)

5. Developer list

Principal Investigators

  • Jim Demmel (University of California, Berkeley, USA)

  • Jack Dongarra (University of Tennessee and ORNL, USA)

  • Julien Langou (University of Colorado Denver, USA)

LAPACK developers involved in this release

  • Sven Hammarling (NAG Ltd. and University of Manchester, UK)

  • Igor Kozachenko (University of California, Berkeley, USA)

  • Julie Langou (University of Tennessee, USA)

  • Benjamin Lipshitz (University of California, Berkeley, USA)

  • Rodney James (University of Colorado Denver, USA)

6. More details

6.1. xGEQRT: QR factorization (improved interface)

contributors

Rodney James (UC Denver)

6.2. xTPQRT: Communication-Avoiding QR sequential kernels

contributors

Rodney James (UC Denver)

6.3. BLAS test codes now using F90 machine epsilon, optimization now works

contributors

Rodney James (UC Denver)

contribution

BLAS test codes now using F90 machine epsilon, optimization now works

6.4. Fix Thread safety issue

contributors

Rodney James (UC Denver)

contribution

xLARFT routines modified so that V in now [in] only instead of [in/out], now thread safe

6.5. LAPACK test suite

.contributors

Rodney James (UC Denver)

.contribution

LAPACK test suite modified so that all tests will pass with gfortran (and ifort with -O0, and hopefully others)

6.6.  LAPACKE - Standard C language APIs for LAPACK
lapacker

Julie Langou (University of Tennessee)

contribution

Since LAPACK 3.3.0, LAPACK includes new C interfaces. With the LAPACK 3.4.0 release, LAPACKE is directly integrated within the LAPACK library and has been enriched with the new set of LAPACK subroutines. See here.

Headers and code have been cleaned up and some routines have been added.

6.7. CMAKE build system

contributors

CMAKE team

lapacker

Julie Langou (University of Tennessee)

contribution

We are striving to help our users install our libraries seamlessly on their machines. The CMAKE team contributed to our effort to port LAPACK under the CMAKE build system. LAPACKE integration has been improved, and support for XLF compiler has been added. With this release, we are releasing for Windows all dlls: reference BLAS, LAPACK and LAPACKE Windows are now able to call LAPACKE directly form Visual Studio. (No Fortran involved!) More info and download available at http://icl.cs.utk.edu/lapack-for-windows/lapack/

7. Bug Fix

see here