Comment (by Miren Radia):

That parameter file with CarpetX::poison_undefined_value = yes works fine for me since it doesn’t use the PunctureTracker thorn.

The problems arise when I enable the PunctureTracker thorn (and also BoxInBox since it’s required by PunctureTracker). I modified the previous parameter file (i.e. qc0.par with CarpetX::poison_undefined_value = yes) by enabling those two thorns and adding the following parameters:

BoxInBox::num_regions = 1
BoxInBox::shape_1 = "cube"
BoxInBox::num_levels_1 = 1
BoxInBox::radius_1 = [-1]
BoxInBox::position_x_1 = 0.0
BoxInBox::position_y_1 = 0.0
BoxInBox::position_z_1 = 0.0

PunctureTracker::verbose = yes

PunctureTracker::track    [--

Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2892/spacetimex-gpu-error-in-puncturetracker