t_Bonmin_std.py fails on arm64, ppc64, ppc64el

[pgrt]

What happened?

I built openturns 1.23 on a Debian autobuilder equipped with debian/experimental, and on arm64, ppc64, ppc64el, the test t_Bonmin_std.py fails, see
https://buildd.debian.org/status/fetch.php?pkg=openturns&arch=arm64&ver=1.23-1&stamp=1718137756&raw=0

We get an error with "LIMIT_EXCEEDED" with the B-BB algorithm. Surprisingly:

• this issue does not show up with the C++ test ;
• with the other algorithms the test passes (e.g. by setting line 61 of t_Bonmin_std.py to for algo in ot.Bonmin.GetAlgorithmNames()[1:]:.

The issue does not show up with amd64, armhf, ...

How to reproduce the issue?

Build OT on a machine with one of the above architectures and debian/experimental.

Version

1.23

Operating System

Linux

Installation media

from source

Additional Context

No response

[jschueller]

one difference I can see with the c++ test is the iteration limit, maybe try that:

diff --git a/python/test/t_Bonmin_std.py b/python/test/t_Bonmin_std.py
index 01ee596dd..82cb91039 100755
--- a/python/test/t_Bonmin_std.py
+++ b/python/test/t_Bonmin_std.py
@@ -55,6 +55,7 @@ problem.setInequalityConstraint(h)
 bonminAlgorithm = ot.Bonmin(problem, "B-BB")
 bonminAlgorithm.setStartingPoint([0, 0, 0, 0])
 bonminAlgorithm.setMaximumCallsNumber(10000)
+bonminAlgorithm.setMaximumIterationNumber(1000)
 bonminAlgorithm.setProgressCallback(progress)
 bonminAlgorithm.setStopCallback(stop)

[pgrt]

Hi Julien,

Thanks, good catch! By removing this line, the C++ test fails.
By adding it as you suggest, the Python test passes.