assembly of global stiffness matrix directly to csr form

[yosimzd2]

hi all,
i develop a finite element code in java.

i use in wrapper to use in pardiso solver(written in c++).

my global stiffness matrix is csr form cause i don't have enough memory to allocate the all upper\lower triangular matrix. so first of all i allocate to the crs global matrix just 0.0005 from the upper\lower triangular size.(0.005)*(0.5*n*(n+1))
my goal is to do the assembly directly to the global spars matrix.
there is any algorithm or other think that can help me with this?

thanks in advance

 

[IDS]

You might like to have a look at the PySparse project.

http://pysparse.sourceforge.net/

It's not Java, but the documentation is pretty good, and the code is open source, so it might be useful.

Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/