Hello all,<div><br></div><div>when using the AHFinderDirect thorn in a simulation of a relativistic wind past a TOV neutron star, i get the following error message:</div><div><br></div><div><div><b>INFO (AHFinderDirect): proc 0: searching for horizon 1/1</b></div>
<div><b>WARNING level 0 in thorn AHFinderDirect processor 0 host <a href="http://permeability.daa.uv.es">permeability.daa.uv.es</a></b></div><div><b>  (line 78 of /Users/vass/programs/Cactus/arrangements/EinsteinAnalysis/AHFinderDirect/src/jtutil/error_exit.cc): </b></div>
<div><b>  -&gt; ***** row_sparse_Jacobian__UMFPACK::solve_linear_system():</b></div><div><b>        error return status=1 from umfpack_numeric() routine</b></div></div><div><b><br></b></div><div>is that an indication that umfpack is not installed correctly (i was never prompted to install it manually and the compilation of the Einstein toolkit [Maxwell release] went on smoothly without any errors), or rather that something is wrong trying to find the horizon? (there should be an horizon, because the lapse goes to 0 fairly quickly, after which the simulation eventually crashes)</div>
<div><br></div><div>thanks for your help,</div><div><br></div><div>best wishes,</div><div><br></div><div>Vassili</div>