matrix-vector multiplication stored in skyline format

[mariospapa]

Is there any program in fortran90 which multiply a matrix A by a vector x where Matrix A is stored in symmetric skyline format?

[Greg_T_]

Hello,

You could try searching the Guide to Available Mathematical Software at the NIST web site:
http://gams.nist.gov/

I have found a variety of useful numerical routines from that site.

Regards,
Greg

[Steven_L_Intel1]

I suggest asking in the Intel Math Kernel Library forum.