ExaFMM 1
Fast-multipole Method for exascale systems
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00001 /* 00002 Copyright (C) 2011 by Rio Yokota, Simon Layton, Lorena Barba 00003 00004 Permission is hereby granted, free of charge, to any person obtaining a copy 00005 of this software and associated documentation files (the "Software"), to deal 00006 in the Software without restriction, including without limitation the rights 00007 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 copies of the Software, and to permit persons to whom the Software is 00009 furnished to do so, subject to the following conditions: 00010 00011 The above copyright notice and this permission notice shall be included in 00012 all copies or substantial portions of the Software. 00013 00014 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00020 THE SOFTWARE. 00021 */ 00022 #include "evaluator.h" 00023 00024 int main() { 00025 const int numBodies = 10000; 00026 const int numTarget = 100; 00027 IMAGES = 0; 00028 THETA = 1 / sqrtf(4); 00029 Bodies bodies(numBodies); 00030 Bodies jbodies; 00031 Evaluator<Laplace> FMM; 00032 FMM.initialize(); 00033 FMM.preCalculation(); 00034 FMM.printNow = true; 00035 00036 FMM.startTimer("Set bodies "); 00037 FMM.sphere(bodies); 00038 FMM.stopTimer("Set bodies ",FMM.printNow); 00039 00040 FMM.startTimer("Set domain "); 00041 FMM.setDomain(bodies); 00042 FMM.stopTimer("Set domain ",FMM.printNow); 00043 00044 if( IMAGES != 0 ) { 00045 FMM.startTimer("Set periodic "); 00046 jbodies = FMM.periodicBodies(bodies); 00047 FMM.stopTimer("Set periodic ",FMM.printNow); 00048 } else { 00049 jbodies = bodies; 00050 } 00051 00052 FMM.startTimer("Direct GPU "); 00053 FMM.evalP2P(bodies,jbodies); 00054 FMM.stopTimer("Direct GPU ",FMM.printNow); 00055 00056 FMM.startTimer("Direct CPU "); 00057 bool onCPU = true; 00058 bodies.resize(numTarget); 00059 Bodies bodies2 = bodies; 00060 FMM.initTarget(bodies2); 00061 FMM.evalP2P(bodies2,jbodies,onCPU); 00062 FMM.stopTimer("Direct CPU ",FMM.printNow); 00063 00064 real diff1 = 0, norm1 = 0, diff2 = 0, norm2 = 0; 00065 FMM.evalError(bodies,bodies2,diff1,norm1,diff2,norm2); 00066 FMM.printError(diff1,norm1,diff2,norm2); 00067 FMM.postCalculation(); 00068 FMM.finalize(); 00069 }