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Two sided communication fails to converge #27

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soumyadipghosh opened this issue Feb 26, 2020 · 2 comments
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Two sided communication fails to converge #27

soumyadipghosh opened this issue Feb 26, 2020 · 2 comments
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@soumyadipghosh
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soumyadipghosh commented Feb 26, 2020 •
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The following execution after compiling with develop branch does not converge in 500 iterations:

mpirun -np 4 ./benchmarking/bench_ras --num_iters=500 --explicit_laplacian --set_1d_laplacian_size=64 --set_tol=1e-6 --local_tol=1e-12 --partition=regular2d --local_solver=iterative_ginkgo --enable_twosided

However, when the twosided is changed to onesided, it converges!
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Yes, for twosided, you need to add the --enable_global_check flag which allows it to test for convergence. Otherwise, it just runs until the number of iterations.

@pratikvn pratikvn added the question Further information is requested label Feb 26, 2020
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Closing as I believe it is resolved now.

@soumyadipghosh soumyadipghosh mentioned this issue Mar 8, 2020
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