Troubleshooting

mpi4py Fails to Install

You most likely don't have an MPI implementation installed. Choose one that works on your system, probably OpenMPI or MPICH.

libstempo Fails to Install

If you are pip installing, check that you have installed tempo2 as instructed here. If the errors involve cython, see here

scikit-sparse Fails to Install

If you are pip installing, check that you have installed suitesparse as instructed here.

RuntimeError involving autocorrelation time

If you get an error like

RuntimeError: The autocorrelation time is too long relative to the variance in dimension 632846881.

a temporary solution is to increase N_samples. We are actively working to upgrade our sampler and fix this issue.

cython errors when installing libstempo

If you are installing ptarcade with pip, you may run into an installation error involving libstempo. The recent cython 3.0 update included breaking changes that have not yet been accounted for in all dependencies. libstempo is one such dependency. The error presented should look something like this:

Collecting libstempo>=2.4.0 (from enterprise-extensions<3.0.0,>=2.4.2->ptarcade==0.1.5)
  Downloading libstempo-2.4.5.tar.gz (885 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 885.3/885.3 kB 53.5 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error

  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [217 lines of output]

      Error compiling Cython file:
      ------------------------------------------------------------
      ...
      cdef class tempopulsar:
          """tempopulsar(parfile, timfile=None, warnings=False, fixprefiterrors=True,
                         dofit=False, maxobs=None, units=False, ephem=None, t2cmethod=None,
                         toas=None, toaerrs=None, observatory=None, obsfreq=1400)"""

          cpdef public object parfile
                ^

There is an open pull request for libstempo to fix this issue, but it has not been merged yet. We've tested this pull request, and it fixes the cython issues while remaining backwards compatible with old cython versions.

The temporary fix for this problem is to first install libstempo from the merged pull request as follows:

pip install git+https://github.com/vallis/libstempo@refs/pull/54/merge

Now that the patched version of libstempo is installed, you can install ptarcade as usual.

My problem is not described here

If you don't see a solution to your problem on this page, please open an issue on our GitHub repository or email us at ptarcade.dev@gmail.com.