Hello,
I tested using commit a9f1d2e3711476ba4189ea804488e5264a4229a8 (and some previous versions).
I’m using

Ubuntu 16.04
conda 4.6.2
python 3.7
cuda 10.0.130_410.48  (driver 410.48)
cudnn 7.4.2.24
magma for cuda10 (installed by conda install -c cpbotha magma-cuda10)

The error message I got is:
python test_cuda.py 
......ssss........ssssssssssssssssssssssss..................................................................................................................................................................ssss........ssssssssssssssssssssssss........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ssss........ssssssssssssssssssssssss........................................................................................................................................................................ssss........ssssssssssssssssssssssss........................................................................................................................................................................ssss........ssssssssssssssssssssssss.....................................................................................................................................................................................EE.
python: /home/ubuntu/miniconda3/conda-bld/magma-cuda10_1543042134558/work/interface_cuda/interface.cpp:732: void magma_queue_create_internal(magma_device_t, magma_queue**, const char*, const char*, int): Assertion `queue->dBarray__ != NULL' failed.
Aborted (core dumped)

If you need more information, please let me know.
Thank you.