OCTO-TIGER / RADIATION VERIFICATION

Euler and coupled ADER2

Reviewed problem-specific durations focus on the resolved evolution; matching physical parameters and adaptive-mesh plans are used for both methods. The remaining runs are prioritized by estimated completion time across levels, methods, and problems. Estimates guide the queue and are not measured production timings. Each completed run is published after its comparisons validate. Each link contains plots, numerical checks and the saved run settings.

Coupled ADER2 accuracy remains under investigation. ADER2 remains experimental. Radiation-only convergence results and the second-order design do not establish uniform second-order accuracy for stiff coupled hydro–radiation evolution. A completed benchmark is not itself an accuracy claim.

Revision 6 validation limits. Streaming-wave temporal-order thresholds failed at limiter transitions even with resolved references. Optically thick radiation temporal probes remain unresolved under the unchanged 1e-12 measurement guard. Strict stiff coupled temporal tests have not been rerun for revision 6 and remain an open limitation.

Euler permits radiation substeps. ADER2 shares one hydro–radiation timestep and uses the CPU backend.

EULER: all completed resolutions · ADER2: all completed resolutions · Euler versus ADER2 and analytic/reference comparisons

Status: running · 22/48 completed. Updated 2026-10-13T18:06:21.076765+00:00.

LevelProblemEulerCoupled ADER2Comparison
2Streaming Wavecompleted (cpu)completed (cpu)Compare methods and references
2Streaming Frontcompleted (cpu)completed (cpu)Compare methods and references
2Gaussian Pulsecompleted (cpu)completed (cpu)Compare methods and references
2Equilibrium Spherecompleted (cpu)completed (cpu)Compare methods and references
2Subcritical Shockpending (cpu)interrupted (cpu)Compare methods and references
2Supercritical Shockpending (cpu)pending (cpu)Compare methods and references
2Radiating Blastcompleted (cpu)completed (cpu)Compare methods and references
2Marshakcompleted (cpu)completed (cpu)Compare methods and references
3Streaming Wavecompleted (cpu)completed (cpu)Compare methods and references
3Streaming Frontcompleted (cpu)completed (cpu)Compare methods and references
3Gaussian Pulsecompleted (cpu)completed (cpu)Compare methods and references
3Equilibrium Spherepending (cpu)pending (cpu)Compare methods and references
3Subcritical Shockpending (cpu)pending (cpu)Compare methods and references
3Supercritical Shockpending (cpu)pending (cpu)Compare methods and references
3Radiating Blastcompleted (cpu)pending (cpu)Compare methods and references
3Marshakcompleted (cpu)completed (cpu)Compare methods and references
4Streaming Wavepending (cpu)pending (cpu)Compare methods and references
4Streaming Frontrunning (cpu)completed (cpu)Compare methods and references
4Gaussian Pulsepending (cpu)pending (cpu)Compare methods and references
4Equilibrium Spherepending (cpu)pending (cpu)Compare methods and references
4Subcritical Shockpending (cpu)pending (cpu)Compare methods and references
4Supercritical Shockpending (cpu)pending (cpu)Compare methods and references
4Radiating Blastpending (cpu)pending (cpu)Compare methods and references
4Marshakpending (cpu)pending (cpu)Compare methods and references

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