Hi everyone, I have finally managed to build scipy on Opteron (red hat linux enterprise 3), so I can import it in python with no problems but when I go to scipy/tests and try to run any of the tests python test_common.py the following error appears, can anyone give me a hint, File "/usr/lib64/python2.2/unittest.py", line 412, in loadTestsFromTestCase self.getTestCaseNames(testCaseClass))) File "test_common.py", line 20, in __init__ self.z = rand(100,10,20) File "/projects/mice/share/arch/linux64/lib64/python2.2/site-packages/scipy_base/ppimport.py", line 115, in __call__ return self._ppimport_attr(*args,**kwds) File "/projects/mice/share/arch/linux64/lib64/python2.2/site-packages/scipy/stats/distributions.py", line 82, in rand return random(args) File "/projects/mice/share/arch/linux64/lib64/python2.2/site-packages/scipy/stats/distributions.py", line 75, in random return _build_random_array(randfile.sample, (), size) File "/projects/mice/share/arch/linux64/lib64/python2.2/site-packages/scipy/stats/distributions.py", line 66, in _build_random_array s.shape = size ValueError: total size of new array must be unchanged Thanks very much Leila