Commit 098c4139 authored by Thomas Auckenthaler's avatar Thomas Auckenthaler
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description of the elpa_qr directory in the dev. version added to README

parent 9655c781
......@@ -121,6 +121,13 @@ other piece of code.
architecture. Use instead of the standard elpa2_kernels.f90
file. elpa2_kernels_bg.f90 contains assembler instructions for the
BlueGene/P processor which IBM's xlf Fortran compiler can handle.
- elpa_qr directory (development version only)
This directory contains routines for an alternative implementation
of the QR-decomposition of "tall and skinny" matrices, which is
needed for the reduction to banded form. The usage of this
alternative implementation can be switched on and off by setting
the variable "which_qr_decomposition" in elpa2.f90 (default = on).
* test directory
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