various MatDuplicate_XXX() that previously used PetscLayoutCopy() now use PetscLayoutReference() to share the same layout.

Hg-commit: fd9a32ce98293ea5f22d7487fd95e4b6f875cb6c

Fixing error codes. Tests pass.

Hg-commit: bdf819c75c20406e5a6865f364261735fcc4ff47

Still trying to make PetscSFCreateSectionSF() work correctly
- Looks like sfDof is working in preallocation

Hg-commit: 65cf12240bfb5e04aa7f9c115538daae379508a6

Trying to get my fixes in.

Hg-commit: 25330b9748061bdf09c3eb1a5001dc54749c0c10

commit after merge of my goddman fix of chkerrcusp to chkerrq and Pauls huge update to cuda stuff

Hg-commit: e915e297637302e520c73af435865fcdb6cd5f94

Need correct include files for linking.

Hg-commit: e59780f2731d3bea95e2c47ad87addd313080f01

fixed use of SETERRCUSP()

Hg-commit: d6581f22821231079d1265957ef6642b76714350

missed adding the new dir veccusp to 'tree' target.

Hg-commit: fa4a8af2bda7d369fe98dda3c082929deb678e73

move VecScatterInitializeForGPU() and VecScatterFinalizeForGPU() to a separate subdir.
This way - the fortran interfaces wont' conflict with the non-TXPETSCGPU of petsc

Hg-commit: 2611955fe7972373e4

move VecScatterInitializeForGPU() and VecScatterFinalizeForGPU() to a separate subdir.
This way - the fortran interfaces wont' conflict with the non-TXPETSCGPU of petsc

Hg-commit: 2611955fe7972373e4a4012382ee4d01c1486ca7

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Changes to the Parallel GPU sparse matrix vector multiplication. It is now far more efficient due to overlapped communication and computation. To use these features, one must configure with
--with-t

Changes to the Parallel GPU sparse matrix vector multiplication. It is now far more efficient due to overlapped communication and computation. To use these features, one must configure with
--with-txpetscgpu=1 --download-txpetscgpu=no
One has 4 choices for the matrix storage format: csr, coo, dia, and ell. A kernel for the inodes (csr format only) is also supported. These are accessed with
-cusp_storage_format ell

Lastly, cusparse algorithms are now used for the upper and lower triangular solves.

Hg-commit: 2a4f352daf491fda81965ac393e29a9dca6d3ca3

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Added new partitioning and distribution to DMMesh
- Added SF-specific support to PetscSection
- Fixed Mesh ex3 tests

Hg-commit: bcbdebf58e52a834535ff841de3291856da6874e

VecDotNorm2_Nest() implementation from Parick Lacasse <patrick.m.lacasse@gmail.com> [petsc-maint #102196]

Hg-commit: 2948298879ceb7f877b151abcc58caa451bc43fd

Fix seg. violation error.

Hg-commit: 65e40fbba1cac120fa462df6169c23f6249a21b0

Put a MPI_Barrier() before calling VecDot()

Hg-commit: 3df7147cf3b08952bb6b4479f46934d06f598de8

commit after merge

Hg-commit: d540875a63b3c979c82b6a7fa7f062571e906d10