Initial tests 28 for the GCR (balanced variable)
Characteristics of this test:
- RHS PV is raw data.
- Anti-PV computed via balanced streamfunction directly in GCR iterations.
- Transform uses grid-only PV.
- The first guess unbalanced pressure is raw streamfunction.
- Tridiagonal vertical preconditioning.
- 500 iterations (restart 5).
- Mass weighted inner product for GCR coefficients.
- Data location /export/custard/disk-01/ross/PV_Results/GCR_Test/Balanced/TridiagPrecon/Test1/
Balanced stremfunction
Compare to result using diagonal preconditioning
The convergence (Error norm vs total iteration)
Red line: tridiagonal preconditioning, blue line: no preconditioning, green line: diagonal preconditioning
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