Hi,
I am trying to benchmark ViennaCL against the MKL for GMRES preconditioned by
ILU0 factorization. It turns out that I get different number of iterations for
both solvers. Where can I get more information about the convergence criteria?
More precisely, if we are trying to solve A.x = y, preconditioned by B (so we
try to solve B.A.x = B.y If I understand correctly), with a relative error of
epsilon, what is the convergence criteria ?
- Is it Norm(A.x_n - y) <= epsilon Norm(y) ?
- Which norm is used ?
- Can we customize the norm used?
Best regards,
François Fayard
Founder & Consultant - Inside Loop
Tel: +33 (0)6 01 44 06 93
Web: www.insideloop.io
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