Adaptive Volume Estimators - #4110

Merged

paulromano merged 36 commits into

openmc-dev:developfrom

jtramm:rr_adaptive_simple

Sep 9, 2026

Commits on Jul 9, 2026

Add adaptive random ray volume estimator and make it the default

John Tramm
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270eace
Document the adaptive random ray volume estimator

John Tramm
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f3f03b3
Add regression coverage for the adaptive volume estimator

John Tramm
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e19f771
Apply the flat-source fallback to all adaptive demotions under linear sources

John Tramm
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7c8a61b

Commits on Jul 10, 2026

Describe the estimator from the current code state in docs and comments

John Tramm
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70893a6
Give the ray-starved adaptive case its own test function

John Tramm
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ea74c9d
Test the volume estimators at a starved ray density

John Tramm
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41e51d8
Restrict the negative-source demotion to the transport-corrected signature

John Tramm
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02bdfb5
Add a strong-feed latch to the adaptive estimator's transition demotion

John Tramm
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75d13f8
Regenerate the two starved adaptive golds for the strong-feed latch

John Tramm
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07fc29f

Commits on Jul 11, 2026

State the latch's effect without referencing validation problems

John Tramm
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6a6c2ea

Commits on Jul 17, 2026

Report a single demotion count by default, details at verbosity 8

John Tramm
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e6f715f
Partition the demotion diagnostics into one coherent cause breakdown

John Tramm
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544f368

Commits on Jul 20, 2026

Drop the redundant linear-to-flat count from the demotion report

John Tramm
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a50797f
Remove a comment explaining a line that is not there

John Tramm
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74b89ed
Restrict the per-batch strong-source ratio test to the inactive batches

John Tramm
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96361b9
Regenerate the two starved adaptive golds for the phase-gated ratio test

John Tramm
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3e94e0d

Commits on Jul 22, 2026

Re-evaluate the accumulated demotion decisions throughout the active phase

John Tramm
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9e46080

Commits on Aug 27, 2026

Add the strict adaptive volume estimator and an auto selection policy

John Tramm
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147a5e7

Commits on Aug 28, 2026

Pin the weight-window trigger of the auto estimator routing

John Tramm
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4771627

Commits on Sep 2, 2026

Update the default-persistence canary for the auto estimator

John Tramm
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aa64d28
Resolve the auto volume estimator without modifying the setting

John Tramm
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8341c6d
Tighten the volume estimator documentation

John Tramm
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5647707
Describe the simulation averaged estimator as unbiased

John Tramm
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63400ae
Match the surrounding prose style in comments and docs

John Tramm
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3c93633
Simplify the theory section on the adaptive estimators

John Tramm
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bbdf542
Add the default auto setting to the estimator table

John Tramm
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911022b
Trim the auto table entry

John Tramm
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a6841f9
ran git clang format
John Tramm
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178b664

Commits on Sep 3, 2026

Ran git clang format

John Tramm
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8c95ffe
Pin the FW-CADIS mesh test to the hybrid estimator

John Tramm
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a3bd078

Commits on Sep 9, 2026

Move random ray constants to flat_source_domain.h
paulromano
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2a8af71
Assess the strict positivity fixup on the stabilized flux iterate

John Tramm
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30e9148
Parametrize the diagonal stabilization tests over the estimator

John Tramm
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af28a90
Merge branch 'develop' into rr_adaptive_simple

John Tramm
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273f6a7
Reduce adaptive source region bookkeeping memory
paulromano
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47f4ad6