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Co-authored-by: Johannes Blühdorn <55186095+jblueh@users.noreply.github.com>
Co-authored-by: Pedro Gomes <38071223+pcarruscag@users.noreply.github.com>
Co-authored-by: Pedro Gomes <38071223+pcarruscag@users.noreply.github.com>
Co-authored-by: Pedro Gomes <38071223+pcarruscag@users.noreply.github.com>
Co-authored-by: Pedro Gomes <38071223+pcarruscag@users.noreply.github.com>
| // nijso: check if this can be removed now. | ||
| //solver_fine->InitiateComms(geometry_fine, config, MPI_QUANTITIES::SOLUTION); | ||
| //solver_fine->CompleteComms(geometry_fine, config, MPI_QUANTITIES::SOLUTION); |
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AI 1 day ago
To fix the problem, remove the commented-out code lines so that no executable statements are kept as comments. This eliminates confusion and ensures the codebase reflects only active logic.
Concretely, in SU2_CFD/src/integration/CMultiGridIntegration.cpp, inside CMultiGridIntegration::MultiGrid_Cycle, in the post-smoothing loop near line 544, delete the two lines that comment out solver_fine->InitiateComms(...) and solver_fine->CompleteComms(...). Keep the explanatory comment on line 545 if you still want a note about potential synchronization considerations, or adjust its wording; this change does not alter any executable behavior because those calls are already disabled.
No new methods, imports, or definitions are needed; we are only removing dead commented-out code.
| @@ -543,8 +543,6 @@ | ||
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| /*--- MPI sync after RK stage to ensure halos have updated solution for next smoothing iteration ---*/ | ||
| // nijso: check if this can be removed now. | ||
| //solver_fine->InitiateComms(geometry_fine, config, MPI_QUANTITIES::SOLUTION); | ||
| //solver_fine->CompleteComms(geometry_fine, config, MPI_QUANTITIES::SOLUTION); | ||
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| } | ||
| } |
Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
| /*--- Get current CFL values - only master thread reads to avoid concurrent access races. | ||
| All other threads wait at barrier to get the same cached values. ---*/ | ||
| su2double CFL_fine = 0.0; | ||
| su2double CFL_coarse_current = 0.0; | ||
| su2double CFL_coarse_new = 0.0; | ||
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| /*--- Compute adaptive CFL for coarse grid ---*/ | ||
| su2double CFL_coarse_new = computeMultigridCFL(config, solver_coarse, geometry_coarse, iMesh, CFL_fine, CFL_coarse_current); | ||
| SU2_OMP_MASTER | ||
| { | ||
| CFL_fine = config->GetCFL(iMesh); | ||
| CFL_coarse_current = config->GetCFL(iMesh+1); | ||
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| /*--- Compute adaptive CFL for coarse grid (master thread only) ---*/ | ||
| CFL_coarse_new = computeMultigridCFL(config, solver_coarse, geometry_coarse, iMesh, CFL_fine, CFL_coarse_current); |
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I can help you with the OMP stuff, just point me to a simple case with issues.
What you're doing here doesn't work because CFL_fine is a thread-local variable, so only the master thread will have a value here.
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Thank, pedro, I am still (a bit) lost here.
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Hmmm I reverted this again, but this specific fix seems to solve the 'regular' thread sanitizer tests'. The AD thread sanitizer tests are still failing though.
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Proposed Changes
Give a brief overview of your contribution here in a few sentences.
Implement multigrid agglomeration according to Nishikawa and Diskin.
euler walls are working correctly.
mpi seems to be working (can be improved)
OMP seems to be working (can be improved)
multigrid does not crash anymore
I am submitting my contribution to the develop branch.
My contribution generates no new compiler warnings (try with --warnlevel=3 when using meson).
My contribution is commented and consistent with SU2 style (https://su2code.github.io/docs_v7/Style-Guide/).
I used the pre-commit hook to prevent dirty commits and used
pre-commit run --allto format old commits.I have added a test case that demonstrates my contribution, if necessary.
I have updated appropriate documentation (Tutorials, Docs Page, config_template.cpp), if necessary.