/[escript]/trunk-mpi-branch/paso/src/CommBuffer.h
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Revision 1120 - (view) (annotate) - [select for diffs]
Modified Tue May 1 01:17:46 2007 UTC (12 years, 5 months ago) by ksteube
File length: 2103 byte(s)
Diff to previous 968
MPI branch now runs simplesolve.py with both useMPI=yes and useMPI=no


Revision 968 - (view) (annotate) - [select for diffs]
Modified Tue Feb 13 22:56:57 2007 UTC (12 years, 8 months ago) by ksteube
File length: 2105 byte(s)
Diff to previous 790
Branch for MPI solution of implicit problems

Revision 790 - (view) (annotate) - [select for diffs]
Modified Wed Jul 26 23:12:34 2006 UTC (13 years, 2 months ago) by bcumming
Original Path: trunk/paso/src/CommBuffer.h
File length: 2105 byte(s)
Diff to previous 751
changes to escript/py_src/pdetools.py and /escript/src/Data.h/.cpp to
make the Locator work in MPI. escript::Data::mindp now returns a 3 tuple,
with the MPI rank of the process on which the minimum value occurs
included. escript::Data::convertToNumArrayFromDPNo also takes the ProcNo
to perform the MPI reduction.

This had to be implemented in both the MPI and non-MPI versions to allow
the necesary changes to the Python code in pdetools.py. In the non-MPI
version ProcNo is set to 0. This works for the explicit scripts tested
thus far, however if it causes problems in your scripts contact Ben or
Lutz, or revert the three files (pdetools.py, Data.h and Data.cpp) to
the previous version.  



Revision 751 - (view) (annotate) - [select for diffs]
Added Mon Jun 26 01:46:34 2006 UTC (13 years, 3 months ago) by bcumming
Original Path: trunk/paso/src/CommBuffer.h
File length: 2160 byte(s)
Changes relating to the MPI version of escript
The standard OpenMP version of escript is unchanged

- updated data types (Finley_Mesh, Finley_NodeFile, etc) to store meshes
  over multiple MPI processes.
- added CommBuffer code in Paso for communication of Data associated
  with distributed meshes
- updates in Finley and Escript to support distributed data and operations
  on distributed data (such as interpolation).
- construction of RHS in MPI, so that simple explicit schemes (such as
  /docs/examples/wave.py without IO and the Locator) can run in MPI.
- updated mesh generation for first order line, rectangle and brick
  meshes and second order line meshes in MPI.        
- small changes to trunk/SConstruct and trunk/scons/ess_options.py to
  build the MPI version, these changes are turned off by default.


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