Engineering PFLOTRAN for Scalable Performance on Cray XT and IBM BlueGene Architectures
|Title||Engineering PFLOTRAN for Scalable Performance on Cray XT and IBM BlueGene Architectures|
|Publication Type||Conference Paper|
|Year of Publication||2010|
|Authors||Mills, RT, Sripathi, V, Mahinthakumar, G, Hammond, GE, Lichtner, PC, Smith, BF|
|Conference Name||SciDAC 2010|
We describe PFLOTRAN---a code for simulation of coupled hydro-thermal-chemical processes in variably saturated, non-isothermal, porous media---and the approaches we have employed to obtain scalable performance on some of the largest scale supercomputers in the world. We present detailed analyses of I/O and solver performance on Jaguar, the Cray XT5 at Oak Ridge National Laboratory, and Intrepid, the IBM BlueGene/P at Argonne National Laboratory, that have guided our choice of algorithms.