PyTorch Android 16 KB page-size status: no aligned release found

Artifact org.pytorch:pytorch_android · measured 2026-10-01 · all libraries

no aligned release found

No measured release of PyTorch Android is 16 KB-aligned. The newest measured version, 2.1.0, is still offending.

Caveats

Sampled, not exhaustive: 12 of 12 published versions were measured with native code; unmeasured versions in between are unknown.

Measured evidence

	Version	Library file	p_align	File date	Source
Last offending	`2.1.0`	`jni/arm64-v8a/libc++_shared.so`	4 KB (2^12)	Thu, 12 Oct 2023 07:22:53 GMT	artifact

p_align is the smallest PT_LOAD segment alignment of the ELF. 16 KB-compatible needs at least 16384 (2^14). Method: min PT_LOAD p_align of arm64-v8a/x86_64 .so inside the published AAR/JAR; aligned = >=16384 for every lib. Dates are repository file times, not official release dates.

Offending versions measured (12)

0.0.9, 1.7.1, 1.8.0, 1.9.0, 1.10.0, 1.11, 1.12, 1.12.1, 1.12.2, 1.13.0, 1.13.1, 2.1.0

Native libraries seen: libc++_shared.so, libfbjni.so, libpytorch_jni.so.

The Gradle change

no 16 KB-aligned release of org.pytorch:pytorch_android measured (latest measured 2.1.0); ask the vendor, check for a fork, or re-link the .so yourself; replacing is the last resort

Confirm what Gradle actually resolves, since another dependency may pull an older version:

./gradlew :app:dependencyInsight --dependency pytorch_android --configuration releaseRuntimeClasspath

Re-verify it yourself

Download the artifact and run the free checker (check16k.py, Python 3, no dependencies):

curl -LO https://repo1.maven.org/maven2/org/pytorch/pytorch_android/2.1.0/pytorch_android-2.1.0.aar
python3 check16k.py pytorch_android-2.1.0.aar

Exit 0 = aligned, 1 = an unaligned library found. Better still, run it on your final .aab/.apk.

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The paid kit ($12, v2) contains the complete measured fix map for all 80+ libraries as JSON and a table, every raw per-version measurement, the spot-check evidence, and the step-by-step guide for Play's 16 KB requirement. This page and the checker script stay free.

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Related artifacts

PyTorch Android lite (org.pytorch:pytorch_android_lite)
ExecuTorch (org.pytorch:executorch-android)