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Learning scaLAPACK ?

PostPosted: Mon Jan 24, 2005 12:21 pm
by sameh
I learned MPI, and i am getting started to learn how to use scaLAPACK, but i have no idea about LAPACK, is necessary to learn LAPACK first ?. and from where i will start ?.

PostPosted: Tue Jan 25, 2005 12:05 am
by phymilton
From my own experience, I think you should learn at least several standard routines in Lapack before you go to scalpack. such as zgemm(), zgeev(), then you can get familar with the notations in lapack and scalapack.

PostPosted: Tue Jan 25, 2005 12:09 pm
by Julien Langou
Hello,

is necessary to learn LAPACK first ?

yes I think sameh is right, try first to get code running with LAPACK, then move to ScaLAPACK. Doing so, you have a way to compare the results obtained in parallel (ScaLAPACK) with a trusted sequential version (LAPACK)

from where i will start ?.

getting start with LAPACK is fairly easy. ScaLAPACK is a bit more tricky and a good way to start is to use the examples of use provided at: http://www.netlib.org/scalapack/examples/