From sistek at math.cas.cz Mon Oct 9 22:41:21 2017
From: sistek at math.cas.cz (Jakub Sistek)
Date: Mon, 9 Oct 2017 21:41:21 +0100
Subject: [bddcml-users] Question about Multilevel BDDC solver library
In-Reply-To:
References:
Message-ID: <67dc82c5-a9c4-4e13-fa80-2fed06400007@math.cas.cz>
Dear Jianrong,
thank you for you interest in BDDCML.
I would like to encourage you to start playing with and looking into the
poisson_on_cube example, which does not require any input files. The
other examples are somewhat obsolete. This example solves a Poisson
problem on a unit cube. It has three arguments - number of elements per
an edge of a cubic subdomain, number of such subdomains along an edge of
the unit cube, and the number of levels in BDDC.
For example,
mpirun -np 2 ./poisson_on_cube 4 2 2
runs the example using 2 MPI processes, with subdomains of 4x4x4
trilinear elements, using 2x2x2=8 subdomains, and 2 levels in BDDC (the
standard BDDC method with a coarse problem). The solution can be
examined from the created pvd file.
The example is newer and more self-contained than bddcml_{local, global}.
I am very interested in your application, so please, do not hesitate to
ask if needed.
Best wishes,
Jakub
On 9.10.2017 17:48, Jianrong Lu wrote:
> Hi Dr. Sistek
> I am Jianrong. I am working on high performance
> computing. I try to solve fluid structure interaction problem. I try
> to test bddcml before I use bddcml to solve my question.
> Would you mind to give me a example how to describe
> 'PROBLEMNAME' ? when I running
>
> mpirun -np X ./bddcml_local PROBLEMNAME M
>
> Thank you.
>
> Jianrong