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Implement data schema validation for matProps-loaded yaml files

feature requestAdding a new feature or medium-to-large changeAdding a new feature or medium-to-large change

Status: Open.

#2504 In terrapower/armi;

· opotowsky opened on Apr 14, 2026

Support passing formatting args to at least runLog.debug

optimizationrelated to measuring and speeding up the code or reducing memoryrelated to measuring and speeding up the code or reducing memory

Status: Open.

#2495 In terrapower/armi;

· drewj-tp opened on Apr 7, 2026

Rename matProps.Material to MatPropsMaterial

cleanupCode/comment cleanup: Low PriorityCode/comment cleanup: Low Priority

Status: Open.

#2476 In terrapower/armi;

· john-science opened on Mar 13, 2026

matProps should support simple float constants

optimizationrelated to measuring and speeding up the code or reducing memoryrelated to measuring and speeding up the code or reducing memory

Status: Open.

#2475 In terrapower/armi;

· john-science opened on Mar 13, 2026

Support moving / retrieving files with MPI directory changer

feature requestAdding a new feature or medium-to-large changeAdding a new feature or medium-to-large change

Status: Open.

#2474 In terrapower/armi;

· drewj-tp opened on Mar 12, 2026

codecov.io fails when coverage drops 0.02%

ciRelated to continuous integration / github actionsRelated to continuous integration / github actions

good first issueGood for newcomersGood for newcomers

Status: Open.

#2471 In terrapower/armi;

· john-science opened on Mar 10, 2026

Material.refDens is an instance variable, but should not be

enhancementImproving an existing featureImproving an existing feature

Status: Open.

#2467 In terrapower/armi;

· john-science opened on Mar 6, 2026

Support creating assemblies from blueprints in parallel

complexExpected to be a complex issueExpected to be a complex issue

feature requestAdding a new feature or medium-to-large changeAdding a new feature or medium-to-large change

optimizationrelated to measuring and speeding up the code or reducing memoryrelated to measuring and speeding up the code or reducing memory

Status: Open.

#2465 In terrapower/armi;

· drewj-tp opened on Mar 2, 2026

Support loading assemblies from database in parallel

complexExpected to be a complex issueExpected to be a complex issue

feature requestAdding a new feature or medium-to-large changeAdding a new feature or medium-to-large change

optimizationrelated to measuring and speeding up the code or reducing memoryrelated to measuring and speeding up the code or reducing memory

Status: Open.

#2464 In terrapower/armi;

· drewj-tp opened on Feb 27, 2026

Blueprints loading technical debt

enhancementImproving an existing featureImproving an existing feature

Status: Open.

#2449 In terrapower/armi;

· opotowsky opened on Feb 5, 2026

Cannot reload from database that includes Nitrogen-14

bugModeling results may be incorrect: Highest PriorityModeling results may be incorrect: Highest Priority

Status: Open.

#2431 In terrapower/armi;

· keckler opened on Jan 19, 2026

Increase depth of TOC in ARMI PDF(s)

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#2414 In terrapower/armi;

· opotowsky opened on Jan 8, 2026