ARPACK: Need help to run simple programs

vfvieira · 10-22-2009, 08:28 AM

Hi,
I have installed ARPACK but I couldn't do much things, so I need some help.
The installation was made successfully and I could customize and run the sample examples that came with the package.
My problem is to run simple examples with my own matrixes. I don't know pass to ARPACK my own matrix (loaded from a file, for example) and get the eigenvalues. This matrix could be any real matrix (sparse or dense, symmetric or not).
If anyone could help I will be so grateful.
Thanks,
Vinicius Vieira

lutusp · 10-23-2009, 01:26 AM

Quote:

Originally Posted by vfvieira

Hi,
I have installed ARPACK but I couldn't do much things, so I need some help.
The installation was made successfully and I could customize and run the sample examples that came with the package.
My problem is to run simple examples with my own matrixes. I don't know pass to ARPACK my own matrix (loaded from a file, for example) and get the eigenvalues. This matrix could be any real matrix (sparse or dense, symmetric or not).
If anyone could help I will be so grateful.
Thanks,
Vinicius Vieira

ARPACK Documentation

Read and experiment. Just like a normal mortal.

vfvieira · 10-23-2009, 07:05 PM

I had already read and experimented, normal mortal.
I know how to google to find the User Guide.
My doubt was in how to pass the matrix to ARPACK.
If you didn't understand the question (or think the question is not for you), there is no need to answer it sarcastically. You just don't answer, easy.

But coming back to the problem... I wasn't understanding the Reverse Communication concept, but now I kept the idea. There is no need to pass the matrix to ARPACK. The responsibility over the matrix control is all mine. Now things are clearer for me.

lutusp · 10-23-2009, 08:38 PM

Quote:

Originally Posted by vfvieira

I had already read and experimented, normal mortal.
I know how to google to find the User Guide.
My doubt was in how to pass the matrix to ARPACK.
If you didn't understand the question (or think the question is not for you), there is no need to answer it sarcastically. You just don't answer, easy.

But coming back to the problem... I wasn't understanding the Reverse Communication concept, but now I kept the idea. There is no need to pass the matrix to ARPACK. The responsibility over the matrix control is all mine. Now things are clearer for me.

Translation: "I took your advice." So noted.