The general case is not much more complicated than this 12.one can place the result of the routine in a python variable dt = pyadlib.stableTimestep().Given a “low level” routine, such as and a wrapper Writing python bindings double adlib::stableTimeStep(const char *) char pyadlib_stableTimestep_name_ = "stableTimestep" PyObject * pyaldib_stableTimestep(PyObject *, PyObject * args) support pyadlib.so Python bindings Mesher Solver StrengthModel Controller Application Pyre CustomApp MPDb Integrating existing codes 11 used as a base class for user defined application classes 10Ĭustom application driver geometry meshing fem checkpoints properties materials adv.mpi.Application: support for launching and staging MPI applications.support for exchanging python objects among processors.communicator and processor group manipulation.mpi: package with python bindings for MPI.mpipython.exe: MPI enabled interpreter (needed only on some platforms).Python as the driver for concurrent applications that.selection and association with geometry.access to the underlying solver data structures in a uniform way.topological and geometrical information.No measurable impact on either performance or scalability 7Īpplication deployment Workstation Front end Compute nodes launcher solid monitor fluid journal 8.MPI is fully integrated: bindings + OO layer.a python interpreter on each compute node.trivial embedding of the interpreter in an MPI compliant manner.robust, portable, mature, well supported, well documented.Allow the application to discover new capabilities without the need for recompilation or relinking.Organize the large number of application parameters.Contemplate the disconnect between a remote, parallel computation and your ability to control it from your laptop 6įlexibility through the use of scripting.robustness under evolutionary pressures.a strategy for the composition of structural and behavioral elements.a specification for the possible collaborations of these elements.a description of the crucial structural elements and their interfaces.a specification of the organization of the software system.optimized to provide a high neutron flux at the sample, and a large solid angle of detector coverage Data analysis for neutron scattering experiments national capability full neutron scattering community engagement Pyre is the data analysis framework large number of data analysis modules standard integration strategy distributed web services (XMLRPC, SOAP, OGSA,…) IO facilities for data transport integrated visualization Projects – DANSE 5Īpplication-specific application-general framework computational engines Pyre collaboration extended to include VPAC (Australia) ĪRCS will be a high-resolution, direct-geometry, time-of-flight chopper spectrometer at the Spallation Neutron Source in Oak Ridge.will be engineered with software evolution and growth as design requirements. address the limitations of what is currently feasible.be usable by the entire Earth sciences community.GeoFramework is a modeling package that will.Simulations of multi-scale deformation in solid earth Geophysics (ITR).Virtual Facility for Simulating the Dynamic Response of Materials Goals: simulate experiments where strong shocks and detonation waves impinge on solid targets enable validation of such simulations against experimental data Multidisciplinary activities: modeling and simulation of fundamental processes first principles computation of material properties compressible turbulence and mixing problem solving environment Projects – VTF 3 Largest run: nirvana at LANL, 1764 processors for 24 hrs, generated 1.5 Tb 2.platforms: all common Unix variants, OSX, Windows.compilers: all native compilers on supported platforms, gcc, Absoft, PGI.enable the non-expert without hindering the expert.Radar interferometry: ROIPAC (NASA JPL).Neutron scattering data analysis: ARCS(DOE), DANSE (NSF).Geophysics: GeoFramework (NSF ITR), CIG (NSF).Dynamic response of materials: Caltech ASC Center (DOE).Pyre An overview of a software architecture for scientific applications Michael Aivazis Caltech Mantle Convection Workshop Boulder 19-26 June 2005
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