This means that we not only setup the runtime device tracker
to force the intended device, it also means making sure
the default device is the error device.
The previous implementation of DeviceAdapterRuntimeDetector caused
multiple differing definitions of the same class to exist and
was causing the runtime device tracker to report CUDA as disabled
when it actually was enabled.
The ODR was caused by having a default implementation for
DeviceAdapterRuntimeDetector and a specific specialization for
CUDA. If a library had both CUDA and C++ sources it would pick up
both implementations and would have undefined behavior. In general
it would think the CUDA backend was disabled.
To avoid this kind of situation in the future I have reworked VTK-m
so that each device adapter must implement DeviceAdapterRuntimeDetector
for that device.
The new and improved vtkm::cont::ColorTable provides a more feature complete
color table implementation that is modeled after
vtkDiscretizableColorTransferFunction. This class therefore supports different
color spaces ( rgb, lab, hsv, diverging ) and supports execution across all
device adapters.
9bf14b78 Correct warnings inside worklet::Clip when making array handles
1b6d67e0 Always defer to the serial allocator when allocating basic storage
bf2b4169 Refactor vtk-m ArrayHandle to use mutable over const_cast
705528bf vtk-m ArrayHandle + basic storage has an optimized PrepareForDevice method
22f9ae3d vtk-m ArrayHandle + basic holds control data by StorageBasicBase
b1d0060d Make Storage and ArrayHandle export for the same value types.
d0a68d32 Refactor vtk-m storage basic to generate less code
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1084
By hard coding the PrepareForDevice to know about all the different VTK-m
devices, we can have a single base class do the execution allocation, and not
have that logic repeated in each child class.
Added check for long double arrays, use TBB parallel_sort
Added radix sort instantiations for char16_t, char32_t, and
wchar_t. std::is_arithmetic<T> will evaluate to true for these
types.
Removed VTKM_CONT_EXPORT in DeviceAdapterAlgorithmTBB.h to try
and fix dll related error on Windows.
Created split implementation. Parallel radix
sort calls moved to vtkm_cont library.
Added key value radix sorts. SortByKey will invoke
radix sort when the key is a fundamental C++ numeric
or character type.
Added fast path for vtkm::SortLess and vtkm::SortGreater
calls to Sort and SortByKey.
Parallel radix sorting will be invoked in DeviceAdapterAlgorthmTBB.h when
the input is ArrayHandle<T, vtkm::cont::StorageTagBasic> where T is one of
the following basic C++ types:
unsigned int
unsigned short int
unsigned long int
unsigned long long int
unsigned char
char16_t
char32_t
wchar_t
char
short
int
long long
signed char
float
double
If a comparison operator is provided, it must be type std::less<T> or std::greater<T>.
Radix sort implementation is Satish parallel radix sort as documented in the
following citation:
Fast sort on CPUs and GPUs: a case for bandwidth oblivious SIMD sort.
N. Satish, C. Kim, J. Chhugani, A. D. Nguyen, V. W. Lee, D. Kim, and P. Dubey.
In Proc. SIGMOD, pages 351–362, 2010
Implementation is based on Takuya Akiba's GitHub source code with the following
changes:
- Changed parallel threading from OpenMP to TBB tasks
- Removed pair sorting
- Added minimum threshold for parallel, will instead invoke serial radix sort (kxsort)
- Added std::greater<T> and std::less<T> to interface for descending order sorts
- Added can_use_parallel_radix_sort<T, F>() function to determine if parallel radix sorting
is possible for type T and compare function F (fallback is std::sort() if not possible)
- Added linear scaling of threads used by the algorithm for more stable performance
on machines with lots of available threads (KNL and Haswell)
Added kxsort (serial MSD radix sort by Dinghua Li via GitHub) implementation without modification.
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
