---
# System prepended metadata

title: OVERVIEW - Cycle 33 11/25
tags: [cycle 33 11/25]

---

# OVERVIEW - Cycle 33 11/25

- Cycle:
    - **Betting table: 18.11.2025**
    - Length: ~ 5 weeks
    - **Review meeting: 13.01.2026 - 10:30?**

## Available people:

+ CSCS:
    * Christos: 40%
    * Edoardo: 4 weeks
    * Enrique: full cycle
    * Giacomo: 
    * Hannes: full cycle
    * Ioannis: 4 weeks
    * Mikael (Simberg): 2-3 weeks
    * Philip: 1 Week LUMI Hackaton; Maybe other LUMI Tasks
    * Rico: 40%
    * Sara (ECMWF): working on PMAP-LES
    * Till: 100% until QPM, vacation afterwards
    * Will: 60%, but absent Dec. 17-24 (QPM Dec. 15-16)
+ EXCLAIM:
    * Chia Rui: full fycle
    * Jacopo: 50--75%
    * Mathieu:
    * Magdalena: 4 weeks (knowledge transfer)
    * Nikki: 4 weeks
    * Yilu: full cycle
+ MCH:
    * Christoph: 25%
    * Daniel: 50% 

## Goal

Blueline production for coupled runs and distributed Greenline JW

## Tasks

### Blueline
| Title                                                                                                                                          | Appetite | Developers | Support |
| ---------------------------------------------------------------------------------------------------------------------------------------------- | -------- | ---------- | ------- |
| [[Blueline] Coupled runs with ICON4Py granules][blueline-couple]                                                                               |          | Hannes           | Christoph        |
| [[Blueline] CI for Blue Line on Balfrin and Santis][blueline-ci-for]                                                                           |          | Daniel           |         |
| [[Blueline] Preparing icon-exclaim for an AMD port][blueline-prep-1]                                                                           |          | Will, Andreas           |         |
| [[Blueline] Building and Deployment – Involve C2SM][blueline-buildi]                                                                           |          | Daniel (after the other)           |         |
| [[Blueline] Prepare to merge icon-exclaim upstream][blueline-prepar]                                                                           |          |            |         |

### Greenline
| Title                                                                                                                                          | Appetite | Developers | Support |
| ---------------------------------------------------------------------------------------------------------------------------------------------- | -------- | ---------- | ------- |
| [[Greenline] Distributed runs in model setup][greenline-distr]                                                                                 |          | Magdalena, Nikki           | Jacopo |
| [[Greenline] Halo Construction][greenline-halo]                                                                                                |          | Magdalena, Nikki          | Jacopo |
| [[Greenline] Drivers for the standalone single node JW test case][greenline-drive]                                                             |          | Yilu, Chia-Rui           | Jacopo |
| [[Greenline] Integrate Configuration][greenline-integ]                                                                                         |          | Yilu, Chia-Rui, Magdalena           | Jacopo, Enrique |
| [[Greenline] muphys clean-up, performance improvement, paper][greenline-muphy]                                                                 |          | Will, Hannes          | Edoardo, Philip, Ioannis        |
| [[Greenline] finish torus implementation][greenline-torus]                                                                                     |          | Jacopo, Mikael           |         |
| [[Greenline] Custom PyPI Index server][greenline-custo]                                                                                        |          | Philip           | Enrique |
| [[Greenline] side-project: Documentation for static fields][greenline-side]                                                                    |          | Jacopo, Chia Rui |         |

### Performance & DaCe & GT4Py
| Title                                                                                                                                          | Appetite | Developers | Support |
| ---------------------------------------------------------------------------------------------------------------------------------------------- | -------- | ---------- | ------- |
| [[ICON4Py] Investigate balfrin dycore performance][icon4py-investi]                                                                            |          | Christoph           | Philip, Ioannis        |
| [[ICON4Py] GPU kernel level optimizations (NVIDIA+AMD)][greenline-gpu-k]                                                                       |          | Ioannis, Edoardo           | Christos (AMD)         |
| [[DaCe] Library Node for `broadcast + concat_where` Expressions][dace-library-no] & [[DaCe] Dataflow Inlining Transformation][dace-dataflow-i] |          |            |         |
| [[DaCe] Optimization XII aka. Make the Optimizer _less_ Indeterministic][dace-optimizati]                                                      |          |            |         |
| [[GT4Py] Lowering to SDFG (DaCe backend)][gt4py-lowering]                                                                                      |          | Edoardo (bug fixes)           |         |
| [[GT4Py] Half / Staggered fields][gt4py-half-stag]                                                                                             |          | Till, Sara           |         |
| [[GT4Py] Instrumentation API][gt4py-instrumen]                                                                                                 |          | Enrique           | Hannes, Ioannis        |
| [[GT4Py] Usability enhancements][gt4py-usability]                                                                                              |          | Till (read-only cache), Python 3.14 (Rico)           |         |
| [[ICON4Py] GHEX async MPI/NCCL refactoring][icon4py-ghex-as]                                                                                   |          | Mikael, Philip           |         |
| [[DaCe] Miscellaneous Tasks][dace-miscellane]                                                                                                  |          |            |         |



[blueline-buildi]: https://hackmd.io/sBfGozNFSwGtkHnWJxGxKQ
[blueline-ci-for]: https://hackmd.io/plc96tA8QvqieHVgpujj-Q
[blueline-couple]: https://hackmd.io/ppHZr65iR8CzV8HcdOnDJA
[blueline-prepar]: https://hackmd.io/iQbBDsiWT2avZHGEwWAb3A
[blueline-prep-1]: https://hackmd.io/OA0RfqGtSHCwi5RwVKi1Kw
[dace-dataflow-i]: https://hackmd.io/H2mXKtePQIaa35RHTylQ9w
[dace-library-no]: https://hackmd.io/rxWTk1QxTAS_BihLu7ofnA
[dace-miscellane]: https://hackmd.io/Y8_80IBBQmOd32sy_zothA
[dace-optimizati]: https://hackmd.io/SuiIF_DpQ9G7kzSmCuMAxg
[greenline-custo]: https://hackmd.io/ARDy18dhQRKZp3M5sjgOQA
[greenline-distr]: https://hackmd.io/EQzTLMX7RQalFpiR8_VnoQ
[greenline-drive]: https://hackmd.io/YWL5kk-2S8GyPlhaCEvm8w
[greenline-gpu-k]: https://hackmd.io/a9WOTApsRDqryc3S3WU-zg
[greenline-halo]: https://hackmd.io/7FLkLqsuRA2GYx5rS2pweA
[greenline-integ]: https://hackmd.io/a3kSeImZToy0FT9Cat4rmg
[greenline-muphy]: https://hackmd.io/9C-KQ74hQ1aVdgGHEKq1BQ
[greenline-side]: https://hackmd.io/8gYmStbCTbay_tK5iilAGA
[greenline-torus]: https://hackmd.io/72furX8YQoi9bVFpbYUFXw
[gt4py-half-stag]: https://hackmd.io/w2vmjApmRemddVeVLtfQOw
[gt4py-instrumen]: https://hackmd.io/goD44S1UT7KLnAll-plx-Q
[gt4py-lowering]: https://hackmd.io/T8IUj-pUQBem25ivg7ABSg
[gt4py-usability]: https://hackmd.io/EaE8e8X7TkOyvJ9DovDthA
[icon4py-ghex-as]: https://hackmd.io/palqviNASbOYAZXR5XwfSA
[icon4py-investi]: https://hackmd.io/9IZsQCg5QJOI966Q_XQi7w