| --- |
| pretty_name: jax-fli forward-modelling experiments |
| license: mit |
| language: |
| - en |
| tags: |
| - cosmology |
| - large-scale-structure |
| - n-body |
| - particle-mesh |
| - weak-lensing |
| - lightcone |
| - healpix |
| - jax |
| size_categories: |
| - n<1K |
| configs: |
| - config_name: 00-cosmogrid-kappa |
| data_files: 00-cosmogrid/kappa/cosmogrid_sample_kappa.parquet |
| - config_name: 00-cosmogrid-density |
| data_files: 00-cosmogrid/density/cosmogrid_density_nside2048_shell*.parquet |
| - config_name: 00-cosmogrid-born-des |
| data_files: 00-cosmogrid/kappa/kappa_born_des.parquet |
| - config_name: 00-cosmogrid-born-s3 |
| data_files: 00-cosmogrid/kappa/kappa_born_s3.parquet |
| - config_name: 01-resolution-density |
| data_files: 01-resolution/density/*.parquet |
| - config_name: 01-resolution-spectra |
| data_files: 01-resolution/spectra/*.parquet |
| - config_name: 01-resolution-perf |
| data_files: 01-resolution/perf/perf_pm.parquet |
| - config_name: 06-cosmogrid-shells-perf |
| data_files: 06-cosmogrid-shells/perf/perf_pm.parquet |
| - config_name: 06-cosmogrid-shells-density-2bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/density/cosmogrid_2bin_fullsky_pencil/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-2bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/density/cosmogrid_2bin_fullsky_slab/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-2bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/density/cosmogrid_2bin_quadrant_pencil/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-2bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/density/cosmogrid_2bin_quadrant_slab/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-3bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/density/cosmogrid_3bin_fullsky_pencil/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-3bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/density/cosmogrid_3bin_fullsky_slab/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-3bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/density/cosmogrid_3bin_quadrant_pencil/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-3bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/density/cosmogrid_3bin_quadrant_slab/shell_*.parquet |
| - config_name: 06-cosmogrid-shells-density-512-2bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_2bin_fullsky_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-2bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_2bin_fullsky_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-2bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_2bin_quadrant_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-2bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_2bin_quadrant_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-3bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_3bin_fullsky_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-3bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_3bin_fullsky_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-3bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_3bin_quadrant_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-density-512-3bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/density_512/cosmogrid_3bin_quadrant_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-2bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_2bin_fullsky_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-2bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_2bin_fullsky_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-2bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_2bin_quadrant_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-2bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_2bin_quadrant_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-3bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_3bin_fullsky_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-3bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_3bin_fullsky_slab_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-3bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_3bin_quadrant_pencil_density_512.parquet |
| - config_name: 06-cosmogrid-shells-spectra-512-3bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/spectra_512/spectra_cosmogrid_3bin_quadrant_slab_density_512.parquet |
| - config_name: 00-cosmogrid-density-spectra |
| data_files: 00-cosmogrid/density_spectra/*.parquet |
| - config_name: 00-cosmogrid-kappa-spectra |
| data_files: 00-cosmogrid/kappa_spectra/*.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-2bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_2bin_fullsky_pencil_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-2bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_2bin_fullsky_slab_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-2bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_2bin_quadrant_pencil_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-2bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_2bin_quadrant_slab_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-3bin-fullsky-pencil |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_3bin_fullsky_pencil_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-3bin-fullsky-slab |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_3bin_fullsky_slab_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-3bin-quadrant-pencil |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_3bin_quadrant_pencil_2048.parquet |
| - config_name: 06-cosmogrid-shells-spectra-2048-3bin-quadrant-slab |
| data_files: 06-cosmogrid-shells/spectra_2048/spectra_cosmogrid_3bin_quadrant_slab_2048.parquet |
| - config_name: 05b-3bins-density |
| data_files: 05-spacing-n-stepping/05b-3bins/density/*/*.parquet |
| - config_name: 05b-3bins-spectra |
| data_files: 05-spacing-n-stepping/05b-3bins/density_spectra/*.parquet |
| - config_name: 05c-equal-volume-kappa |
| data_files: 05-spacing-n-stepping/05c-equal-volume/kappa/*/*.parquet |
| - config_name: 05c-equal-volume-kappa-spectra |
| data_files: 05-spacing-n-stepping/05c-equal-volume/kappa_spectra/*.parquet |
| - config_name: 11-scaling-spectra |
| data_files: 11-scaling/density_spectra/*.parquet |
| --- |
| |
| # jax-fli experiments |
|
|
| Data, samples, and reference catalogs for the [`jax-fli`](https://github.com/ASKabalan/jax-fli) |
| forward-modelling experiments. Each experiment is exposed as one or more |
| HuggingFace dataset *configs*; load a config with `datasets.load_dataset`. |
|
|
| ## Experiment 00 — CosmoGrid reference |
|
|
| A single CosmoGrid simulation (`cosmo_000001`) packaged as `jax-fli` `Catalog` |
| parquet files, used as reference truth for the lensing / masked-shear experiments. |
|
|
| | Config | Field | Shape | NSIDE | Description | |
| |--------|-------|-------|-------|-------------| |
| | `00-cosmogrid-density` | `SphericalDensity` | `(56, 50331648)` | 2048 | Density (rho = N/V, float32) lightcone, 56 per-shell parquet rows out to z <= 1.6 (DES Y3 source depth, see exp 06). One config — **load by streaming**: concatenating all 56 shells into a single Arrow column overflows its INT32 list-offset. | |
| | `00-cosmogrid-kappa` | `SphericalKappaField` | `(4, 3145728)` | 512 | CosmoGrid's own Stage-3 forecast convergence maps, 4 tomographic bins. | |
| | `00-cosmogrid-born-des` | `SphericalKappaField` | `(4, 50331648)` | 2048 | jax-fli Born-approximation convergence from the nside-2048 density lightcone, **DES Y3** source n(z), 4 tomographic bins. | |
| | `00-cosmogrid-born-s3` | `SphericalKappaField` | `(4, 50331648)` | 2048 | jax-fli Born-approximation convergence from the same lightcone, **CosmoGrid Stage-3** source n(z), 4 tomographic bins. | |
|
|
| ```python |
| import jax_fli as jfli |
| from datasets import load_dataset |
| from huggingface_hub import snapshot_download |
| from jax_fli.io import Catalog |
| |
| REPO = "ASKabalan/jax-fli-experiments" |
| |
| # --- Forecast convergence (kappa), nside 512: one small config, plain (non-streaming) load --- |
| kappa = Catalog.from_dataset( |
| load_dataset(REPO, "00-cosmogrid-kappa", split="train").with_format("numpy") |
| ).field[0] # SphericalKappaField (4, npix) |
| |
| # --- Born convergence, nside 2048, 4 bins: one ~0.8 GB file per config, plain load --- |
| born_des = Catalog.from_dataset( |
| load_dataset(REPO, "00-cosmogrid-born-des", split="train").with_format("numpy") |
| ).field[0] # SphericalKappaField (4, npix) — DES Y3 source n(z); use "00-cosmogrid-born-s3" for Stage-3 |
| |
| # --- Density lightcone, nside 2048, 56 shells: MUST be streamed --- |
| # A plain load_dataset concatenates the 56 (npix,) shell rows into one Arrow column and overflows its |
| # INT32 list-offset. Snapshot the per-shell parquets (+ README, which carries the config glob), then |
| # stream from the local dir and stack the shells into the (56, npix) lightcone. |
| local = snapshot_download( |
| REPO, |
| repo_type="dataset", |
| allow_patterns=["00-cosmogrid/density/cosmogrid_density_nside2048_shell*.parquet", "README.md"], |
| ) |
| shells = [ |
| Catalog.from_dataset(row).field[0] |
| for row in load_dataset(local, "00-cosmogrid-density", split="train", streaming=True) |
| ] |
| density = jfli.SphericalDensity.stack(shells) # SphericalDensity (56, npix) float32 |
| ``` |
|
|
| ## Experiment 01 — Resolution convergence |
|
|
| PM mesh-resolution study (512³–3072³, fixed box/steps/cosmology, **independent IC realisation per |
| mesh**) painting 10 comoving HEALPix shells (nside 512, z≈0.017–0.35). See |
| [`docs/5-experiments/01-resolution-convergence`](https://github.com/ASKabalan/jax-fli/tree/main/docs/5-experiments/01-resolution-convergence). |
|
|
| **Three configs**, each bundling all five resolutions `m∈{512,1024,2048,2560,3072}` as **rows** (the |
| `01-resolution-density` config additionally carries pencil-decomposition variants at m2560 and m3072, |
| tagged with a `_pencil` suffix on each row's `name`): |
|
|
| | Config | Field (per row) | Shape | Rows | |
| |--------|-----------------|-------|------| |
| | `01-resolution-density` | `SphericalDensity` (DENSITY, float64) | `(10, 3145728)` | 7 density maps (5 resolutions + 2 pencil-decomp: m2560, m3072) | |
| | `01-resolution-spectra` | `PowerSpectrum` (ANGULAR_CL, per_plane δ, full-sky) | `(10, 1536)` | 5 raw spectra | |
| | `01-resolution-perf` | jax-hpc-profiler timings, 19 cols (`perf_pm.parquet`) | — | 5 rungs | |
|
|
| The raw `perf_pm.csv`, the per-rung perf markdown reports, and the `m<m>.args.log` launch logs sit |
| alongside it in `01-resolution/perf/` (plain files). Rows within a parquet config are ordered by |
| filename, **not** mesh, so index them by each field's `mesh_size`: |
|
|
| ```python |
| from datasets import load_dataset |
| from jax_fli.io.catalog import Catalog |
| |
| REPO = "ASKabalan/jax-fli-experiments" |
| cat = Catalog.from_dataset( |
| load_dataset(REPO, "01-resolution-spectra", split="train").with_format("numpy") |
| ) |
| spectra = {int(f.mesh_size[0]): f for f in cat.field} # {512: PowerSpectrum(10,1536), 1024: ..., ...} |
| ``` |
|
|
