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Release notes 0.17.0

documentation

Status: Merged (completed).

openPMD/openPMD-apinumber 1818

#1818 In openPMD/openPMD-api;

· by franzpoeschel was closed on Jan 17, 2026

Wheels: 0.17.0

continuous deploymentautomated shippingautomated shipping

frontend: Python3

Status: Merged (completed).

openPMD/openPMD-apinumber 1833

#1833 In openPMD/openPMD-api;

· by ax3l was closed on Jan 27, 2026

Fix BaseRecord::erase / deletion

bug

Status: Merged (completed).

openPMD/openPMD-apinumber 1841

#1841 In openPMD/openPMD-api;

· by franzpoeschel was closed on Jan 17, 2026

Add openPMD version 2.0 to supported API versions

api: newadditions to the APIadditions to the API

discussion

Status: Merged (completed).

openPMD/openPMD-apinumber 1551

#1551 In openPMD/openPMD-api;

· by franzpoeschel was closed on Oct 29, 2024

Non-spatial meshes

api: newadditions to the APIadditions to the API

discussion

Status: Merged (completed).

openPMD/openPMD-apinumber 1534

#1534 In openPMD/openPMD-api;

· by franzpoeschel was closed on Nov 12, 2024

Unify Random-Access API and Streaming API into Series::snapshots()

api: breakingbreaking API changesbreaking API changes

api: newadditions to the APIadditions to the API

discussion

frontend: C++17

frontend: Python3

Status: Merged (completed).

openPMD/openPMD-apinumber 1592

#1592 In openPMD/openPMD-api;

· by franzpoeschel was closed on Dec 10, 2024

Pickle API: Cache unpickled Series to avoid repeated file access

frontend: Python3

Status: Merged (completed).

openPMD/openPMD-apinumber 1654

#1654 In openPMD/openPMD-api;

· by franzpoeschel was closed on Oct 30, 2024

Dataset-specific JSON/TOML configuration

api: newadditions to the APIadditions to the API

Status: Merged (completed).

openPMD/openPMD-apinumber 1646

#1646 In openPMD/openPMD-api;

· by franzpoeschel was closed on Mar 25, 2025

Variable encoding in ADIOS2: Support partial datasets in ReadRandomAccess

backend: ADIOS2

Status: Merged (completed).

openPMD/openPMD-apinumber 1746

#1746 In openPMD/openPMD-api;

· by franzpoeschel was closed on Apr 15, 2025

Safeguards for READ_LINEAR mode

internal

Status: Merged (completed).

openPMD/openPMD-apinumber 1753

#1753 In openPMD/openPMD-api;

· by franzpoeschel was closed on May 6, 2025

Type conversions for Python Series constructor

frontend: Python3

Status: Merged (completed).

openPMD/openPMD-apinumber 1737

#1737 In openPMD/openPMD-api;

· by franzpoeschel was closed on Apr 3, 2025

Update error message for group encoding in BP5

backend: ADIOS2

Status: Merged (completed).

openPMD/openPMD-apinumber 1750

#1750 In openPMD/openPMD-api;

· by franzpoeschel was closed on Apr 23, 2025

Fix error when reading in linear mode from file-based Series

bug

internal

Status: Merged (completed).

openPMD/openPMD-apinumber 1748

#1748 In openPMD/openPMD-api;

· by franzpoeschel was closed on Apr 22, 2025

Followup: Bug fixes for random-access in variable encoding

backend: ADIOS2

bug

Status: Merged (completed).

openPMD/openPMD-apinumber 1730

#1730 In openPMD/openPMD-api;

· by franzpoeschel was closed on Mar 11, 2025

HDF5: Support for opening scalar datasets

backend: HDF5

Status: Merged (completed).

openPMD/openPMD-apinumber 1764

#1764 In openPMD/openPMD-api;

· by franzpoeschel was closed on Jun 30, 2025

Reactivate parts of test for variable encoding

tests

Status: Merged (completed).

openPMD/openPMD-apinumber 1830

#1830 In openPMD/openPMD-api;

· by franzpoeschel was closed on Jan 13, 2026

CI: CUDA More Space

continuous integration

Status: Merged (completed).

openPMD/openPMD-apinumber 1836

#1836 In openPMD/openPMD-api;

· by ax3l was closed on Jan 14, 2026

CI: Zenodo Validator

continuous integration

Status: Merged (completed).

openPMD/openPMD-apinumber 1826

#1826 In openPMD/openPMD-api;

· by ax3l was closed on Jan 14, 2026

Drop Python 3.8 & 3.9

frontend: Python3

install

Status: Merged (completed).

openPMD/openPMD-apinumber 1671

#1671 In openPMD/openPMD-api;

· by ax3l was closed on Jan 12, 2026

HDF5 filters (compression)

api: newadditions to the APIadditions to the API

backend: HDF5

Status: Merged (completed).

openPMD/openPMD-apinumber 1644

#1644 In openPMD/openPMD-api;

· by franzpoeschel was closed on Sep 30, 2025

gcc12: Fix false positives for std::vector::operator=()

warning

Status: Merged (completed).

openPMD/openPMD-apinumber 1824

#1824 In openPMD/openPMD-api;

· by franzpoeschel was closed on Dec 18, 2025

Variable name changes in HDF5

affects latest release

backend: HDF5

bug

third partythird party libraries that are shipped and/or linkedthird party libraries that are shipped and/or linked

Status: Merged (completed).

openPMD/openPMD-apinumber 1812

#1812 In openPMD/openPMD-api;

· by nischild was closed on Dec 2, 2025

Make lazy parsing (defer_iteration_parsing) more discoverable by giving a hint on the command line

cosmetic

documentation

Status: Merged (completed).

openPMD/openPMD-apinumber 1802

#1802 In openPMD/openPMD-api;

· by franzpoeschel was closed on Dec 3, 2025

Make shape an optional attribute for constant components

backend: ADIOS2

discussion

frontend: C++17

Status: Merged (completed).

openPMD/openPMD-apinumber 1661

#1661 In openPMD/openPMD-api;

· by franzpoeschel was closed on Dec 15, 2025

Use std::unique_ptr in Span API fallback

internal

Status: Merged (completed).

openPMD/openPMD-apinumber 1820

#1820 In openPMD/openPMD-api;

· by franzpoeschel was closed on Dec 17, 2025