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Cycle 37

14.07.2026 → builds until 10.08.2026 → cool-down ends 24.08.2026

Nothing to save
14.07.2026
11.08.2026
Builds until
10.08.2026 · 4 working weeks
Cool-down ends
24.08.2026

Who is in this cycle

Availability is a fraction of the 4 working weeks this cycle builds for. Only the people named here are in the cycle.

personavailablecapacitybetload scheduled until
DropD 80% 3.2 wk0.0 wk —
iomaganaris 30% 1.2 wk0.0 wk —
jcanton 100% 4.0 wk3.0 wk 07.08.2026
kotsaloscv 100% 4.0 wk0.0 wk —
msimberg 50% 2.0 wk0.0 wk —
OngChia 100% 4.0 wk0.0 wk —
philip-paul-mueller 45% 1.8 wk0.0 wk —
yiluchen1066 100% 4.0 wk4.0 wk 07.08.2026

added here, saved with the setup

Delivered

What ended inside this cycle's window, by the date on the record. It is not in the weeks above: those are what people's next weeks hold, and finished work is nobody's next week.

titlebetended
GPU bitwise reproducibility1.5 wk28.07.2026
Configuration continuation4.0 wk04.08.2026
Driver Parallel Output4.0 wk17.08.2026 · 1.0 wk past cycle 37
Serialization scripts improvements0.5 wk22.08.2026 · 1.7 wk past cycle 37

Goal

The bet

Everything ready or in progress, with the tasks each one is made of underneath it. Ticking one stamps it with cycle 37; an item already in progress from an earlier cycle keeps the cycle it was bet in, so its overrun keeps counting. A task has no tick of its own — it is part of the bet above it — and its appetite is typed here because this is where what the bet has to hold is argued about.

in 37
Distributed driver run Pitch 38
Optimize the standalone-driver startup time on GPU Task 38
Clean up muphys tests Task —
Distributed standalone driver benchmarks on bencher Pitch 38
Plug in turbulence - TMX Pitch 37
Review tmx port Task
Integrate tmx into phys driver Task
AMD MI300A kernel optimization Pitch 38
Self-documenting Config Pitch 38
NWP Turbulence granule Python port Pitch 38
Driver config and CLI cleanup Pitch 38
Single precision dycore Pitch —
Refactor IC and topography Pitch —
Physics Driver refactor Pitch 38
Async distributed output Pitch 38
Audit ICON4Py programs with new GT4Py features Pitch 38
Port remaining horizontal tracer advection schemes Pitch 38
State and Component Pitch 38
Prototype implementation Task
Simplified land Task —
Gridlook export Task 38

Notes