Package Details: python-qiskit-aer 0.8.2-3

Git Clone URL: (read-only, click to copy)
Package Base: python-qiskit-aer
Description: A high performance simulator for quantum circuits that includes noise models
Upstream URL:
Licenses: Apache
Submitter: iyanmv
Maintainer: iyanmv
Last Packager: iyanmv
Votes: 2
Popularity: 0.000056
First Submitted: 2019-11-28 13:37
Last Updated: 2021-05-03 09:05

Required by (2)

Sources (1)

Latest Comments

stiglers-eponym commented on 2021-05-03 09:43

@coxackie I did some benchmarks for matrix-matrix multiplication (that's the only thing I really care about) and remember that in some older benchmark openblas-lapack was slightly slower. Now I repeated the benchmark and openblas-lapack was slightly (ca. 1%) faster.

I don't think there is a significant difference in performance, but with openblas-lapack it is easier to directly use LAPACK from C code.

iyanmv commented on 2021-05-03 09:02

@stiglers-eponym Thanks for answering @coxackie so quick. I had this issue some time ago but I forgot to mention it here. As you suggest, one of the developers recommended me [1] installing openblas-lapack. Also, temember that Arch tends to update its packages faster than qiskit updates its support. Meaning that, for example, we had a few months of python 3.9 without official support from qiskit part.

Unfortunately, I don't have all the time I would like to test this intensively. If you really need stability and use this without issues, I would suggest installing qiskit in Docker following their installation guide [2] and using the image continuumio/miniconda3:latest, for example.



coxackie commented on 2021-05-03 08:47

@stiglers-eponym thanks so much for this prompt feedback. I can confirm that it works with openblas-lapack. Are you aware of any regressions the use of openblas-lapack may have (for other packages)?

stiglers-eponym commented on 2021-05-03 08:08

@coxackie I get the same error when using openblas, lapack and cblas from the extra/community repositories. But the error can be avoided (at least on my system) by installing openblas-lapack from the AUR.

I don't know what other implementations of BLAS do, but this might be a problem of the interplay of BLAS and LAPACK.

coxackie commented on 2021-05-03 07:51

The package gives me an error (I have installed the whole qiskit saga):

Python 3.9.4 (default, Apr 20 2021, 15:51:38)
[GCC 10.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import qiskit
>>> from qiskit.providers.aer import AerSimulator
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.9/site-packages/qiskit/providers/aer/", line 72, in <module>
    from .aerprovider import AerProvider
  File "/usr/lib/python3.9/site-packages/qiskit/providers/aer/", line 19, in <module>
    from .backends.aer_simulator import AerSimulator
  File "/usr/lib/python3.9/site-packages/qiskit/providers/aer/backends/", line 17, in <module>
    from .aer_simulator import AerSimulator
  File "/usr/lib/python3.9/site-packages/qiskit/providers/aer/backends/", line 27, in <module>
    from .controller_wrappers import aer_controller_execute
ImportError: /usr/lib/python3.9/site-packages/qiskit/providers/aer/backends/ undefined symbol: slamch_

any ideas?

stiglers-eponym commented on 2021-04-27 20:49

Thanks for providing this package! 2 comments:

  1. one make dependency is missing: nlohmann-json

  2. version 0.8.1 is now available and compiles without further problems with your PKGBUILD (if nlohmann-json is installed)

iyanmv commented on 2020-10-21 16:40

I don't have time to properly update this PKGBUILD these days. If the one who flagged the package wants to become co-maintainer, that would be great. Otherwise, I will have a look second half of November.

iyanmv commented on 2019-11-28 13:39

Warning: python-scikit-build PKGBUILD is currently broken (28.11.2019). Please use this one instead (see comments in the package's page).