Years ago we discovered a problem with TBB's parallel sort, which we
patch in our local repo and submitted a change to TBB, which has been
accepted.
The code to decide whether to use our parallel_sort patch does not work
with the latest versions of TBB because it requires including a header
that changed names to get the TBB version.
We no longer support any TBB version with this bug, so just remove the
patch from VTK-m.
Having VTKM_EXEC on algorithms for CPU devices was problematic because
the algorithms were specific to the CPU, but during a CUDA compile it
would try to compile device code (for no reasons since it was never
called on a device).
Remove these identifiers for the idea that a device implementation knows
specifically what function modifiers to use and does not need the VTK-m
defined catch-alls.
Sandia National Laboratories recently changed management from the
Sandia Corporation to the National Technology & Engineering Solutions
of Sandia, LLC (NTESS). The copyright statements need to be updated
accordingly.
3b03177c Add TBB specialization of Unique.
94d668dd Add serial version of Unique.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Robert Maynard <robert.maynard@kitware.com>
Merge-request: !933
TBB's ReduceByKey was using the generic DeviceAdapterGeneral
implementation and was about 50x slower than the serial implementation,
which is very efficient.
This patch improves TBB's RBK implementation significantly, though it still
does not scale well. On a quad core processor, this implementation performs
comparably or slightly worse than the highly efficient serial algorithm.
More than 4 cores may be needed to see sufficient parallel speedup that
would overcome the TBB overhead, and grain size does not seem to affect the
performance significantly.
Redesigns the TBB and Serial backends and the vtkm::exec::Task concept so that
we can re-use the same launching logic for all Worklets, instead of generating
per worlet code. To keep the performance the same the TilingTask now is past
a range of indices to work on, rather than a single index.
Binary size reduction:
WorkletTests_SERIAL old - 19MB
WorkletTests_SERIAL new - 18MB
WorkletTests_TBB old - 39MB
WorkletTests_TBB new - 18MB
libvtkAcceleratorsVTKm old - 48MB
libvtkAcceleratorsVTKm new - 19MB
windows.h was only being included for MSVC, while in UnitTestTimer.cxx, the
Windows function Sleep was being called after check for _WIN32. This was
causing compilation failure in MINGW.
Fixes#122
There were some issues for device adapter algorithms (like scan and
reduce) for empty arrays or arrays of size 1. This adds tests for these
short arrays to the device adapter algorithm tests and fixes these
problems.
6b1094c7 Consistently include windows.h by making a wrapper header.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@sandia.gov>
Merge-request: !620
We previously included windows.h in numerous locations using different
techniques to guard against bringing in parts of the file that are bad
(min/max macros, etc). This solves the problem by consistently using
vtkm/internal/Windows.h to setup everything.
Change the VTKM_CONT_EXPORT to VTKM_CONT. (Likewise for EXEC and
EXEC_CONT.) Remove the inline from these macros so that they can be
applied to everything, including implementations in a library.
Because inline is not declared in these modifies, you have to add the
keyword to functions and methods where the implementation is not inlined
in the class.
These asserts are consolidated into the unified Assert.h. Also made some
minor edits to add asserts where appropriate and a little bit of
reconfiguring as found.
