On Monday, September 19, 2016 at 9:04:35 AM UTC+2, Ehsan Mihankhah wrote:
> I managed to compile the sample codes but the problem is that when I run 
> the code I receive errors from ARPACK referring to "info=-9" in Pdnaupd. 
> and following "info=-9" I see the error is about initial vector being zero 
> and I cannot solve this problem by tuning any parameter it seems.

if you set initial vector by set_initial_vector(), then make sure it's 
nonzero (i.e. random vector or a solution from previous calculations).
Otherwise a random vector will be used internally by (p)Arpack, see



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