Windows Instalation Verification Issues

[pedro alvarez]

It gave this result in the end of the qutip.testing, what can i do to fix it?

C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\wigner.py:226: DeprecationWarning: `factorial` is deprecated!

Importing `factorial` from scipy.misc is deprecated in scipy 1.0.0. Use `scipy.special.factorial` instead.

  sqrt(factorial(m) / factorial(n)) *

C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\wigner.py:226: DeprecationWarning: `factorial` is deprecated!

Importing `factorial` from scipy.misc is deprecated in scipy 1.0.0. Use `scipy.special.factorial` instead.

  sqrt(factorial(m) / factorial(n)) *

ok

wigner: compare wigner methods for random state vectors ... ok

Wigner: Compare Wigner fft and iterative for rand. ket ... ok

Wigner: Compare Wigner fft and iterative for rand. dm ... ok

Wigner: Compare Wigner clenshaw and iterative for rand. dm ... ok

Wigner: Compare Wigner sparse clenshaw and iterative for rand. dm ... ok

======================================================================

ERROR: Steady state: Thermal qubit - direct solver

----------------------------------------------------------------------

Traceback (most recent call last):

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\nose\case.py", line 197, in runTest

    self.test(*self.arg)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\tests\test_steadystate.py", line 61, in test_qubit_direct

    rho_ss = steadystate(H, c_op_list, method='direct')

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\steadystate.py", line 234, in steadystate

    return _steadystate_direct_sparse(A, ss_args)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\steadystate.py", line 400, in _steadystate_direct_sparse

    v = mkl_spsolve(L, b, perm = in_perm, verbose = ss_args['verbose'])

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 405, in mkl_spsolve

    lu.delete()

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 202, in delete

    byref(c_int(0)), np_error)

OSError: exception: access violation reading 0xFFFFFFFFFFFFFFFF

----------------------------------------------------------------------

Ran 488 tests in 2874.574s

FAILED (SKIP=9, errors=1)

[Alex Pitchford]

Seems you had only one error out of many tests. Possible it was a one off. Does it occur each time you run the tests?

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[pedro alvarez]

It always end up skipping about 9 tests and with 1 or 4 errors, i tested again and came this result

 sqrt(factorial(m) / factorial(n)) *

ok

wigner: compare wigner methods for random state vectors ... ok

Wigner: Compare Wigner fft and iterative for rand. ket ... ok

Wigner: Compare Wigner fft and iterative for rand. dm ... ok

Wigner: Compare Wigner clenshaw and iterative for rand. dm ... ok

Wigner: Compare Wigner sparse clenshaw and iterative for rand. dm ... ok

======================================================================

ERROR: MKL spsolve : Single RHS vector (Complex)

----------------------------------------------------------------------

Traceback (most recent call last):

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\nose\case.py", line 197, in runTest

    self.test(*self.arg)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\tests\test_mkl.py", line 69, in test_mklspsolve2

    y = mkl_spsolve(A.data,b)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 405, in mkl_spsolve

    lu.delete()

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 202, in delete

    byref(c_int(0)), np_error)

OSError: exception: access violation reading 0xFFFFFFFFFFFFFFFF

======================================================================

ERROR: MKL splu : Repeated RHS solve (Complex)

----------------------------------------------------------------------

Traceback (most recent call last):

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\nose\case.py", line 197, in runTest

    self.test(*self.arg)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\tests\test_mkl.py", line 163, in test_mkl_spsolve6

    lu.delete()

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 202, in delete

    byref(c_int(0)), np_error)

OSError: exception: access violation reading 0x000001DCFFFFFFE8

======================================================================

ERROR: MKL spsolve : Solution shape same as input RHS vec

----------------------------------------------------------------------

Traceback (most recent call last):

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\nose\case.py", line 197, in runTest

    self.test(*self.arg)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\tests\test_mkl.py", line 184, in test_mkl_spsolve7

    out = mkl_spsolve(A,b)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 405, in mkl_spsolve

    lu.delete()

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 202, in delete

    byref(c_int(0)), np_error)

OSError: exception: access violation reading 0x000001DCFFFFFFE8

======================================================================

ERROR: MKL spsolve : Hermitian (complex) solver

----------------------------------------------------------------------

Traceback (most recent call last):

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\nose\case.py", line 197, in runTest

    self.test(*self.arg)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\tests\test_mkl.py", line 217, in test_mkl_spsolve9

    y = mkl_spsolve(A, b, hermitian=1)

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 405, in mkl_spsolve

    lu.delete()

  File "C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip\_mkl\spsolve.py", line 202, in delete

    byref(c_int(0)), np_error)

OSError: exception: access violation reading 0x000001DCFFFFFFE8

----------------------------------------------------------------------

Ran 488 tests in 4901.258s

FAILED (SKIP=9, errors=4)

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[Alex Pitchford]

It will always skip some tests.

These errors are strange though.  Looks like some issue with your intel mkl

Can you send us the output from:

qutip.about()

Thanks

[pedro alvarez]

Here it is.

QuTiP: Quantum Toolbox in Python

Copyright (c) 2011 and later.

A. J. Pitchford, P. D. Nation, R. J. Johansson, A. Grimsmo, and C. Granade

QuTiP Version:      4.2.0

Numpy Version:      1.13.3

Scipy Version:      1.0.1

Cython Version:     0.28.1

Matplotlib Version: 2.2.2

Python Version:     3.6.5

Number of CPUs:     8

BLAS Info:          INTEL MKL

OPENMP Installed:   False

INTEL MKL Ext:      True

Platform Info:      Windows (AMD64)

Installation path:  C:\IntelPython3\envs\qutip-env\lib\site-packages\qutip

[Alex Pitchford]

There does not seem to be anything wrong with your setup there.

However, there does appear to be something wrong with your mkl.

How did you install qutip? I see you are not using Anaconda, so did you install from source?

[Paul Nation]

This is seen occasionally.  It is something wrong with accessing the MKL.  I have not seen this problem when working on Winodws, so it is hard to diagnose.  Also, it is possible to manually set the Steady state LU solver, so a workaround exists.

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[pedro alvarez]

I installed using conda, and created an environment "qutip-env" as shown on the qutip manual.

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[Alex Pitchford]

Ok. Sorry, it did not look like a normal anaconda Python install.

You could maybe try rebuilding the extensions

$ python setup.py build_ext

or create another env and try installing from source.

But I am really not sure this will help. It would seem that some kind of fix for mkl is what you need, rather than a fix for qutip. The error is coming from an mkl components. So you might be best to see if you can generate that error in a small snippet, based on the code that is generating the error.

Or, as Paul says, there are other methods in qutip for lu solving. So you could just get on with using qutip for whatever it is you are looking to do, and then work round this error if it occurs.

Alex