Fail fast on nvmath tests and use native traceback while debuging

Author: gmarkall

ci/test_thirdparty_nvmath.sh

@@ -48,7 +48,7 @@ pushd tests
 # Required for nvmath-python to locate pip-install MathDx
 export SYS_PREFIX=`python -c "import sys; print(sys.prefix)"`
 export MATHDX_HOME=${SYS_PREFIX}/lib/python3.13/site-packages/nvidia/mathdx
-python -m pytest nvmath_tests/device
+python -m pytest nvmath_tests/device --tb=native -x
 
 popd
 popd