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00001 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 00002 <html> 00003 <HEAD> 00004 <LINK HREF="doxygen.css" REL="stylesheet" TYPE="text/css"> 00005 </HEAD> 00006 <BODY BGCOLOR="#d4ebf9"> 00007 <IMG SRC="../Images/tBird2D.gif" WIDTH=100 ALIGN="LEFT"/> 00008 <br> 00009 <br><br> 00010 <br><br> 00011 00012 <h1> Recent additions </h1> 00013 00014 <table border="4" width="100%"> 00015 <tr> 00016 <td> <b> Feature </b> </td> 00017 <td> <b> Motivation </b> </td> 00018 <td> <b> Status </b> </td> 00019 </tr> 00020 00021 <tr> 00022 <td> Expressions defined on regions </td> 00023 <td> Multi-material problems </td> 00024 <td> Has passed simple tests </td> 00025 </tr> 00026 00027 <tr> 00028 <td> High-level nonlinear solver objects </td> 00029 <td> Nonlinear problems </td> 00030 <td> Has passed fairly serious tests. 00031 Needs better user interface for parameter input. Newton 00032 and Picard solvers have been implemented so far.</td> 00033 </tr> 00034 00035 <tr> 00036 <td> Parameter expression objects </td> 00037 <td> Design parameters in optimization, continuation parameters 00038 in nonlinear solves </td> 00039 <td> Has passed simple tests. 00040 Single and listed parameters have been implemented. For problems 00041 with a moderate number (10-100) of design parameters, I'd like to 00042 have a vector of parameters to avoid working with a large symbolic list 00043 at the expression level. This needs to be designed. </td> 00044 </tr> 00045 00046 </table> 00047 00048 <h1>Cool features to add</h1> 00049 00050 <table border="4" width="100%"> 00051 <tr> 00052 <td> <b> Feature </b> </td> 00053 <td> <b> Motivation </b> </td> 00054 <td> <b> Dependencies </b> </td> 00055 <td> <b> Work level </b> </td> 00056 <td> <b> Status </b> </td> 00057 </tr> 00058 00059 <tr> 00060 <td> Non-affine quad and brick cells </td> 00061 <td> Support for exodus files based on fastq and cubit meshes </td> 00062 <td> None </td> 00063 <td> Moderate </td> 00064 <td> Started. The major bottleneck is the need for to modify the WorkSet 00065 code to handle non-affine cells</td> 00066 </tr> 00067 00068 <tr> 00069 <td> autoconf </td> 00070 <td> Conform to standard configuration procedure </td> 00071 <td> None </td> 00072 <td> Low </td> 00073 <td> Not begun </td> 00074 </tr> 00075 00076 <tr> 00077 <td> symmetric quad rules for tets </td> 00078 <td> performance </td> 00079 <td> None </td> 00080 <td> Very low </td> 00081 <td> Designed, waiting to be done </td> 00082 </tr> 00083 00084 <tr> 00085 <td> symmetric essential BCs </td> 00086 <td> Allows use of CG. Simplifies formulation of eigenvalue problems. </td> 00087 <td> None </td> 00088 <td> Moderate </td> 00089 <td> In design phase </td> 00090 </tr> 00091 00092 <tr> 00093 <td> Eigenvalue problems </td> 00094 <td> Model reduction, vibrational problems. </td> 00095 <td> Symmetric BCs </td> 00096 <td> Moderate </td> 00097 <td> Not begun </td> 00098 </tr> 00099 00100 <tr> 00101 <td> Interface to rSQP++ </td> 00102 <td> Optimization </td> 00103 <td> None </td> 00104 <td> Low </td> 00105 <td> Started. Roscoe and I need to be careful about coordination 00106 of our smart pointers and memory models, but it's otherwise straightforward 00107 as long as we both use Petra. </td> 00108 </tr> 00109 00110 <tr> 00111 <td> Interface to O3D </td> 00112 <td> Optimization </td> 00113 <td> None </td> 00114 <td> Moderate </td> 00115 <td> In design phase. HCL needs some row access operators </td> 00116 </tr> 00117 00118 <tr> 00119 <td> Interface to Opt++ </td> 00120 <td> Optimization </td> 00121 <td> None </td> 00122 <td> Moderate </td> 00123 <td> Need either (a) HCL interface to Newmat, or (b) Opt++ access to HCL </td> 00124 </tr> 00125 00126 <tr> 00127 <td> Interface to NOX </td> 00128 <td> Nonlinear solvers </td> 00129 <td> None </td> 00130 <td> Low </td> 00131 <td> In design phase </td> 00132 </tr> 00133 00134 <tr> 00135 <td> Interface to PETSC solvers </td> 00136 <td> Access to solvers, compatibility with Omar and George </td> 00137 <td> None </td> 00138 <td> Unknown </td> 00139 <td> Not begun </td> 00140 </tr> 00141 00142 <tr> 00143 <td> Interface to SUNDIALS </td> 00144 <td> Access to time integrators, access to checkpointing 00145 code for adjoint problems </td> 00146 <td> None </td> 00147 <td> Unknown </td> 00148 <td> Not begun </td> 00149 </tr> 00150 00151 <tr> 00152 <td> Exodus mesh reader </td> 00153 <td> Sandia "real world" problems </td> 00154 <td> Needs non-affine quads and bricks </td> 00155 <td> Low, but moderate dependencies </td> 00156 <td> Waiting for dependencies </td> 00157 </tr> 00158 00159 <tr> 00160 <td> Expression objects for functionals </td> 00161 <td> Symbolic objective functions in optimization </td> 00162 <td> None </td> 00163 <td> Moderate </td> 00164 <td> In design phase </td> 00165 </tr> 00166 00167 <tr> 00168 <td> Solving for unmeshed unknowns </td> 00169 <td> Solving for unmeshed design parameters in optimization. Currently, 00170 every unknown and test function is assumed to be represented on a 00171 finite-element mesh. There are ParameterExpr objects for design parameters, 00172 but they can't appear as unknowns. We need to add UnknownParameter expressions. 00173 </td> 00174 <td> Vectors of design parameters </td> 00175 <td> Moderate </td> 00176 <td> In design phase </td> 00177 </tr> 00178 00179 <tr> 00180 <td> Vectors of design parameters </td> 00181 <td> Avoid symbolic vectors for moderate numbers of design parameters </td> 00182 <td> None </td> 00183 <td> Low </td> 00184 <td> In design phase </td> 00185 </tr> 00186 00187 <tr> 00188 <td> Integral equation boundary conditions </td> 00189 <td> Enclosure radiation problems, far-field wave BCs </td> 00190 <td> None </td> 00191 <td> High </td> 00192 <td> In research phase. </td> 00193 </tr> 00194 00195 <tr> 00196 <td> Sierra interface </td> 00197 <td> Making life simpler for Sierra developers </td> 00198 <td> None </td> 00199 <td> High </td> 00200 <td> In research phase. </td> 00201 </tr> 00202 00203 <tr> 00204 <td> Adaptive mesh refinement </td> 00205 <td> Performance </td> 00206 <td> None </td> 00207 <td> High </td> 00208 <td> In research phase </td> 00209 </tr> 00210 00211 00212 <tr> 00213 <td> Aztec plugin </td> 00214 <td> Flexibility and performance </td> 00215 <td> None </td> 00216 <td> Moderate </td> 00217 <td> Not begun </td> 00218 </tr> 00219 00220 <tr> 00221 <td> ML plugin </td> 00222 <td> Flexibility and performance </td> 00223 <td> Aztec plugin? </td> 00224 <td> Moderate </td> 00225 <td> Not begun </td> 00226 </tr> 00227 00228 </table> 00229 00230 </body> 00231 </html>