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Fused block jacobi
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More performant path for block Jacobi case inside BTDS
(GPU only, BlockCrs only). Fuses residual and solve
into one kernel and doesn't convert vectors to SIMD-packed
format. Also inverts diag blocks fully in shared to speed up numeric.

Signed-off-by: Brian Kelley <[email protected]>
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brian-kelley committed Feb 26, 2025
1 parent 8eca3f9 commit 29fe448
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