Fortran Looking for a Lamczos program in fortran

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A user is seeking a user-friendly Fortran 77 source deck for the Lanczos algorithm tailored for large sparse Hermitian matrices, expressing difficulty with an existing resource by Jane Cullum and Ralph Willoughby. Recommendations include LINPACK, which offers various resources on Lanczos, and ARPACK, a library designed for large-scale eigenvalue problems. Caution is advised regarding the age of the Cullum and Willoughby work, as it may not meet modern standards for large eigenproblems, given that their largest test problem involved only 5,000 degrees of freedom. For those interested in a deeper understanding of the Lanczos method, a comprehensive resource is available that provides extensive insights into the algorithms.
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Anyone can help me getting a source deck of Lanczos in f77 for large sparse Hermitian matrices? I need one that is user friendly. There is one written by Jane Cullum and Ralph Willowghbi that I find too difficult to use. Or is there some library that has it and can be linked?

Thanks in advance
 
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Have you tried LINPACK?
 
I don't know that book, but it was written in 1985 so it dates back almost to the start of "practical" use of Lanczos eigensolution methods, and therefore I would be cautious about the quality of the algorithms. Also note the authors' largest test problem was only 5,000 DOF, which is 100 times smaller than today's concept of a "large" eigenproblem.

Try http://www.caam.rice.edu/software/ARPACK/
 

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