PPC test byte order failures

[matthew-brett]

Sorry - the markdown stuff doesn't let me do pre html on this - so formatting is a mess.

ERROR: dipy.reconst.tests.test_dandelion.test_dandelion

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/tests/test_dandelion.py", line 19, in test_dandelion
sd=SphericalDandelion(data,bvals,gradients)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/dandelion.py", line 78, in init
peaks,inds=peak_finding(odf,odf_faces)
File "recspeed.pyx", line 130, in dipy.reconst.recspeed.peak_finding (dipy/reconst/recspeed.c:1667)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/reconst/recspeed.c:4115)
ValueError: Non-native byte order not supported
-------------------- >> begin captured stdout << ---------------------
((102,), (102, 3), (6, 10, 10, 102))

--------------------- >> end captured stdout << ----------------------

ERROR: dipy.reconst.tests.test_gqsampling.test_gqiodfmask

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/tests/test_gqsampling.py", line 24, in test_gqiodfmask
gqs = gq.GeneralizedQSampling(data,bvals,gradients,mask=mask)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/gqi.py", line 157, in init
peaks,inds=rp.peak_finding(odf,odf_faces)
File "recspeed.pyx", line 130, in dipy.reconst.recspeed.peak_finding (dipy/reconst/recspeed.c:1667)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/reconst/recspeed.c:4115)
ValueError: Non-native byte order not supported

ERROR: dipy.reconst.tests.test_gqsampling.test_gqiodf

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/tests/test_gqsampling.py", line 46, in test_gqiodf
gqs = gq.GeneralizedQSampling(data,bvals,gradients)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/gqi.py", line 169, in init
peaks,inds=rp.peak_finding(odf,odf_faces)
File "recspeed.pyx", line 130, in dipy.reconst.recspeed.peak_finding (dipy/reconst/recspeed.c:1667)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/reconst/recspeed.c:4115)
ValueError: Non-native byte order not supported

ERROR: dipy.reconst.tests.test_gqsampling.test_gqi_small

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/tests/test_gqsampling.py", line 232, in test_gqi_small
gqs = gq.GeneralizedQSampling(data,bvals,gradients)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/gqi.py", line 169, in init
peaks,inds=rp.peak_finding(odf,odf_faces)
File "recspeed.pyx", line 130, in dipy.reconst.recspeed.peak_finding (dipy/reconst/recspeed.c:1667)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/reconst/recspeed.c:4115)
ValueError: Non-native byte order not supported
-------------------- >> begin captured stdout << ---------------------
(65,)
(65, 3)
(10, 10, 10, 65)

--------------------- >> end captured stdout << ----------------------

ERROR: dipy.reconst.tests.test_sphere_max.test_performance

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/tests/test_sphere_max.py", line 174, in test_performance
maxes, pfmaxinds = dcr.peak_finding(vert_vals, faces)
File "recspeed.pyx", line 130, in dipy.reconst.recspeed.peak_finding (dipy/reconst/recspeed.c:1667)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/reconst/recspeed.c:4115)
ValueError: Non-native byte order not supported

ERROR: dipy.tracking.tests.test_propagation.test_eudx

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/tracking/tests/test_propagation.py", line 28, in test_eudx
gqs = GeneralizedQSampling(data,bvals,gradients)
File "/Users/mb312/dev_trees/dipy/dipy/reconst/gqi.py", line 169, in init
peaks,inds=rp.peak_finding(odf,odf_faces)
File "recspeed.pyx", line 130, in dipy.reconst.recspeed.peak_finding (dipy/reconst/recspeed.c:1667)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/reconst/recspeed.c:4115)
ValueError: Non-native byte order not supported
-------------------- >> begin captured stdout << ---------------------
(10, 10, 10, 65)

--------------------- >> end captured stdout << ----------------------

ERROR: Cause we love testin.. ;-)

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/nose-0.11.3-py2.6.egg/nose/case.py", line 186, in runTest
self.test(*self.arg)
File "/Users/mb312/dev_trees/dipy/dipy/tracking/tests/test_propagation.py", line 74, in test_eudx_further
T=[e for e in eu]
File "/Users/mb312/dev_trees/dipy/dipy/tracking/propagation.py", line 142, in iter
track =eudx_both_directions(seed.copy(),ref,self.a,self.ind,self.odf_vertices,self.a_low,self.ang_thr,self.step_sz,self.total_weight)
File "propspeed.pyx", line 304, in dipy.tracking.propspeed.eudx_both_directions (dipy/tracking/propspeed.c:2250)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/tracking/propspeed.c:3311)
ValueError: Non-native byte order not supported

FAIL: Doctest: dipy.tracking.propagation.EuDX.init

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/doctest.py", line 2152, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for dipy.tracking.propagation.EuDX.init
File "/Users/mb312/dev_trees/dipy/dipy/tracking/propagation.py", line 38, in init

---

File "/Users/mb312/dev_trees/dipy/dipy/tracking/propagation.py", line 78, in dipy.tracking.propagation.EuDX.init
Failed example:
tracks=[e for e in eu]
Exception raised:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/doctest.py", line 1248, in run
compileflags, 1) in test.globs
File "<doctest dipy.tracking.propagation.EuDX.__init[11]>", line 1, in
tracks=[e for e in eu]
File "/Users/mb312/dev_trees/dipy/dipy/tracking/propagation.py", line 142, in iter
track =eudx_both_directions(seed.copy(),ref,self.a,self.ind,self.odf_vertices,self.a_low,self.ang_thr,self.step_sz,self.total_weight)
File "propspeed.pyx", line 304, in dipy.tracking.propspeed.eudx_both_directions (dipy/tracking/propspeed.c:2250)
File "numpy.pxd", line 248, in numpy.ndarray.getbuffer (dipy/tracking/propspeed.c:3311)
ValueError: Non-native byte order not supported

[matthew-brett]

Fixed by commit 81c056e and preceding; we needed to swap the arrays from data files to native endian after loading.