<div dir="ltr">Dear all,<div><br></div><div>I encountered an issue in moving a setup I have been working with from FLASH4.0.1 to FLASH4.2.1. I'm hoping someone here can point out where I'm going wrong in adopting the new UHD module.</div>
<div><br></div><div>I found that the unsplit hydro option</div><div>order=3 </div><div>would lead to a segmentation fault at the very first timestep in 3D simulations in which a BDRY variable is being used to create a solid boundary. With order=2, the simulation runs. </div>
<div><br></div><div>I backtracked a bit and am able to reproduce the problem I'm having most simply by starting with the Sedov setup:</div><div>./setup Sedov -3d -auto +uhd +pm4dev</div><div>works fine with the default flash.par (which calls for order=3).</div>
<div><br></div><div>If I edit the Config file of Sedov to include a variable BDRY (by adding the a line "VARIABLE BDRY" to the end of the file), but make no other changes, the code crashes during the first timestep (with a seg fault).</div>
<div><br></div><div>If I then set order=2, the code appears to run. </div><div><br></div><div>Similarly, if the setup is in 2D no issues present themselves. </div><div><br></div><div>I am using ifort 14.0.1 to compile. Perhaps I am passing some conflicting options in my setup line? Or maybe this is a bug? Either way, I'm hoping someone can advise me on how to proceed. Let me know if more information would be useful. </div>
<div><br></div><div>Thank you for the help! </div><div><br></div><div>Morgan</div><div><br></div><div><br></div><div><br></div><div><br></div></div>