initial guess for vector x in bicgstab on ITL 4.0

Hi,I'm using ITL 4.0.0-1 with MTL 2.1.2-21, and bicgstab only
converges when I use the right-hand-side vector as the initial guess
for the solution vector. Otherwise, a dot(r,rtilde)=0 always happens
in iteration=2. Is that ok or maybe my linear system has something
wrong?

Thanks in advance

Márcio Ricardo

_______________________________________________
This list is archived at http://www.osl.iu.edu/MailArchives/mtl-devel/