BUG: Fix various Big-Endian test failures (ppc64) #10443
Conversation
numpy/core/tests/test_scalarmath.py
Outdated
| @@ -420,6 +421,7 @@ def test_int_from_infinite_longdouble___int__(self): | |||
| assert_raises(OverflowError, x.__int__) | |||
| assert_equal(len(sup.log), 1) | |||
|
|
|||
| @dec.skipif(platform.machine().startswith("ppc64")) | |||
There was a problem hiding this comment.
Should this be knownfailure?
|
The alignment bug is pretty bad, sometimes it crashes numpy. A large fraction of tests are occasionally affected. After some investigation I think it might be caused by a pretty serious glibc bug on ppc: https://sourceware.org/bugzilla/show_bug.cgi?id=6527 (My VM is using glibc 2.23). They had I don't really feel like trying to compile the newest glibc where that bug is fixed, so I'm just going to ignore all those random failures and assume they are glibc's fault. (I didn't read that bug report super carefully, but they were discussing a lot about ppc32, so maybe my ppc64 system is a little different. But in any case I did confirm in gdb that I was getting 8-byte aligned buffers sometimes) |
2456539 to
d03e465
Compare
|
Would be good to have an issue for the glibc bug for reference, and maybe a release note with a reference to the glibc version that has the bug fix. |
|
All right, will do. |
|
Thanks Allan. |
This fixes a few miscellaneous test failures on ppc64 (big endian). They're all problems with the test, not numpy.
There is an additional heisenbug which I haven't been able to track down since it only occurs rarely, randomly: The test
test_require_eachoccasionally fails to set the "align" flag on acomplex128array. May be related to #6377.After these fixes, the only remaining ppc64 test failures are for float128 types (fixed on my local copy, to submit soon), and #10442.