Sample
joblib 1.5.3: Show that joblib memory mapping requires uncompressed persistence even when mmap_mode is requested at load time.
Verified sample for pypi joblib 1.5.3: Show that joblib memory mapping requires uncompressed persistence even when mmap_mode is requested at load time. The…
sha256:8975a821537b8b2bb33e76eda5c67597b978a25b160ca5e58f4a872aabeb41fa
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
python linux x64 python python 3.12 pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-17 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- Goal
- Show that joblib memory mapping requires uncompressed persistence even when mmap_mode is requested at load time.
- Packages
- Symbols
-
- joblib.dump
- joblib.load
- numpy.memmap
- Environment
- python
- Created
- 2026-08-17T03:54:26Z
Contract
- joblib 1.5.3 loading a NumPy 2.5.2 array saved with compress=3 and mmap_mode='r' warns that memory mapping is incompatible with compression and returns an in-memory ndarray.
- Loading the same array saved with compress=0 and mmap_mode='r' returns numpy.memmap.
- Both loaded arrays preserve the original values.
Files
- NOTES.md
- csx.json
- requirements.txt
- test/contract.py