Update gpu Barnes-Hut code with latest version from Martin Burtscher.

Author: insertinterestingnamehere

lonestar/scientific/gpu/barneshut/CMakeLists.txt

@@ -1,2 +1,5 @@
+# This app has to be built with -O1 to avoid a compiler bug.
+set(CMAKE_CUDA_FLAGS_RELEASE "-O1 -DNDEBUG")
+set(CMAKE_CUDA_FLAGS_RELWITHDEBINFO "-O1 -g -DNDEBUG")
 app_scientific_gpu(bh barneshut)
-add_test_gpu(barneshut rmat15 rmat15.out bh 50000 2 0)
+add_test(NAME barneshut COMMAND barneshut-gpu 50000 2 0)

lonestar/scientific/gpu/barneshut/LICENSE.md

@@ -1,33 +1,37 @@
-CUDA BarnesHut v3.1: Simulation of the gravitational forces
-in a galactic cluster using the Barnes-Hut n-body algorithm
+L-BH v4.5: Simulation of the gravitational forces in a star cluster using
+the Barnes-Hut n-body algorithm.
 
-Copyright (c) 2013, Texas State University-San Marcos. All rights reserved.
+Copyright (c) 2010-2020 Texas State University. All rights reserved.
 
-Redistribution and use in source and binary forms, with or without modification,
-are permitted for academic, research, experimental, or personal use provided that
-the following conditions are met:
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
 
-   * Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above copyright notice,
-     this list of conditions and the following disclaimer in the documentation
-     and/or other materials provided with the distribution.
-   * Neither the name of Texas State University-San Marcos nor the names of its
-     contributors may be used to endorse or promote products derived from this
-     software without specific prior written permission.
-
-For all other uses, please contact the Office for Commercialization and Industry
-Relations at Texas State University-San Marcos <http://www.txstate.edu/ocir/>.
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   * Neither the name of Texas State University nor the names of its
+     contributors may be used to endorse or promote products derived from
+     this software without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED
-IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
-INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
-OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
-OF THE POSSIBILITY OF SUCH DAMAGE.
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL TEXAS STATE UNIVERSITY BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Authors: Martin Burtscher and Sahar Azimi
+
+URL: The latest version of this code is available at
+https://userweb.cs.txstate.edu/~burtscher/research/ECL-BH/.
 
-Author: Martin Burtscher <burtscher@txstate.edu>
+Publication: This work is described in detail in the following paper.
+Martin Burtscher and Keshav Pingali. An Efficient CUDA Implementation of the
+Tree-based Barnes Hut n-Body Algorithm. Chapter 6 in GPU Computing Gems
+Emerald Edition, pp. 75-92. January 2011.