Fix solver variant test: replace PCG with BiCGSTAB#89
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jameslehoux merged 1 commit intoworkingfrom Mar 1, 2026
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PCG (Conjugate Gradient) failed in CI because it requires a symmetric positive definite preconditioner setup that isn't guaranteed with HYPRE's structured solver interface for this problem. BiCGSTAB handles non-symmetric systems robustly and is a better choice for validating solver-independence of the result. https://claude.ai/code/session_01R6ttf92LsJvRQayiPi8xCw
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PCG (Conjugate Gradient) failed in CI because it requires a symmetric positive definite preconditioner setup that isn't guaranteed with HYPRE's structured solver interface for this problem. BiCGSTAB handles non-symmetric systems robustly and is a better choice for validating solver-independence of the result.