muphys -> icon

pitch-8e9044 · in warm_bubble

Status: Thinking — at the foot of the hill Shaping — halfway up the hill Ready — at the top of the hill In progress — halfway down the hill Done — at the bottom, over the hill Shelved — off the hill Built and finished inside its cycle — anything still wanted from it is a new bet.
Priority: Medium
Appetite: 0.5 person-weeks A budget in person-weeks, not an estimate: what this is worth, not how long it takes.
Tags: icon4py, muphys, physics
Owner: jcanton
Assignees: edopao
Reviewers: jcanton, havogt
Review waived: —
Parent: warm_bubble
Blocked by: —
PRs: C2SM/icon4py#1454
Cycle: 38 A bet is for one cycle. Work that overruns is re-bet, not extended by default.
Start date: 02.09.2026
End date: 19.09.2026
Scheduled: 2026-09-02 → 2026-09-19
Blocks: Clean up muphys tests
For later: noted at the end of the body

Problem

Currently muphys has two options: the "outdated" standalone used for the paper and the aes_graupel used in ICON.

Solution

Remove the legacy KOKKOS_MUPHYS scheme from the muphys microphysics module, making AES_GRAUPEL the sole remaining scheme

Rabbit holes

No-gos

For later

Possibly merge test_component_datatest into test_muphys_datatest and delete MuphysExperiment. Check if it is possible to parametrize test_muphys_datatest with setup_muphys.single_program=[False, True].