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"Schur decomposition solver error" on aarch64 #8033
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I suspect there are bugs in OpenBLAS that are percolating up on aarch64. The test suite doesn't actually pass with the failure occurring in the state space modes. |
Does latest scipy help? |
The last bug I know of in OpenBLAS was fixed about a year ago in OpenMathLib/OpenBLAS#3052 |
@bashtage good catch. Upgraded to scipy 1.7.3 fixed the issue :) |
This is good to hear. Could be OpenBLAS, or could be a change in the optimizer avoids a problematic value. Closing since sounds like no issue. |
scipy version 1.7.2 is the first version with this bug fixed. |
In my case I solved only scaling the data with MinMaxScaler |
Describe the bug
I'm using PmdArima, which uses statsmodels underneath the hood.
However, I'm noticing a difference between running the same code on x64 vs aarch64 architecture
Version of statsmodel: 0.13.1
Version of pmdarima: 1.8.4
Code Sample, a copy-pastable example if possible
Excepton on aarch64:
If the issue has not been resolved, please file it in the issue tracker.
Expected Output
No error. Intel version doesn't cause the issue
Output of
import statsmodels.api as sm; sm.show_versions()
INSTALLED VERSIONS
Python: 3.9.7.final.0
OS: Linux 4.14.232-177.418.amzn2.aarch64 #1 SMP Tue Jun 15 20:58:11 UTC 2021 aarch64
byteorder: little
LC_ALL: None
LANG: C.UTF-8
statsmodels
Installed: 0.13.1 (/env/lib/python3.9/site-packages/statsmodels)
Required Dependencies
cython: Not installed
numpy: 1.22.0 (/env/lib/python3.9/site-packages/numpy)
scipy: 1.6.1 (/env/lib/python3.9/site-packages/scipy)
pandas: 1.3.5 (/env/lib/python3.9/site-packages/pandas)
dateutil: 2.8.2 (/env/lib/python3.9/site-packages/dateutil)
patsy: 0.5.2 (/env/lib/python3.9/site-packages/patsy)
Optional Dependencies
matplotlib: Not installed
cvxopt: Not installed
joblib: 1.1.0 (/env/lib/python3.9/site-packages/joblib)
Developer Tools
IPython: Not installed
jinja2: Not installed
sphinx: Not installed
pygments: Not installed
pytest: Not installed
virtualenv: Not installed
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