This is the AINV  plugin for MLD2P4 2, version 1.0-alpha.


The algorithms are described in
D. Bertaccini, S. Filippone
Sparse approximate inverse preconditioners on high performance GPU
platforms,  Computers and Mathematics with Applications,  71 (2016), pp. 693--711


PREREQUISITES

To build this code you need to have PSBLAS 3.4 or later from
https://github.com/sfilippone/psblas3   and MLD2P4
2.1 from https://github.com/sfilippone/mld2p4-2
together with their prerequisites.  

We provide an interface to the SAINV code by M. Tuma, and specifically
the code for sainvsr
http://www2.cs.cas.cz/~tuma/sparslab/sainvsr.tar.gz
to enable you have to download the code from Tuma's website and unpack
it. The sainvsr_driver.F file contains all the code for the ainvsr2
method, together with a  sample main program; you have to take out the
main program and compile ainvsr2 with all its support subroutines. 


INSTALLING

./configure --prefix=/path/to/install \
            --with-mld2p4=/path/to/MLD2P4/install \
	    --with-sainv=/TUMA/sainv/install_file

make;
make install



Contact: Salvatore Filippone     salvatore.filippone@uniroma2.it