Previously memory that was allocated outside of VTK-m was impossible to transfer to
VTK-m as we didn't know how to free it. By extending the ArrayHandle constructors
to support a Storage object that is being moved, we can clearly express that
the ArrayHandle now owns memory it didn't allocate.
Here is an example of how this is done:
```cpp
T* buffer = new T[100];
auto user_free_function = [](void* ptr) { delete[] static_cast<T*>(ptr); };
vtkm::cont::internal::Storage<T, vtkm::cont::StorageTagBasic>
storage(buffer, 100, user_free_function);
vtkm::cont::ArrayHandle<T> arrayHandle(std::move(storage));
```
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.
Generalize DeviceAdapterAlgorithm::Transform to accept input array of different value and storage type.
Add doxygen documentation in DeviceAdapterAlgorithm.h
* Add FindDeviceAdapterTagAndCall
* Add support for multiple arguments to be passed to the functor in
'ForEachValidDevice' and 'FindDeviceAdapterTagAndCall'.
The implementation of the simplified version of
DeviceAdapterAlgorithmGeneral::Unique had two errors.
First, the implementation is such that it calls the more complex version
of Unique (which specifies a binary predicate to establish equality).
However, it was not calling the Unique method in the DerivedAlgorithm
like it should have been. Instead, it was calling its own Unique
algorithm, which might not be as efficient as the specialized Unique for
the device.
Second, it was using std::equal_to as its binary predicate. Using
functors from std can be dangerous because they are not marked with
VTKM_EXEC, so have the potential to not work in the execution
environment. Instead, use the readily available vtkm::Equal binary
predicate.
The implementation of ScanExclusiveByKey in
DeviceAdapterAlgorithmGeneral by shifting values in the input values
array and then calling ScanInclusiveByKey. However, the temporary
shifted values array was created using the key type instead of the
values type. This caused a compile error when the keys and values had
different types.
In generic code, it's a pain to use the equality operators since they
requires the ValueType and Storage to match, else the operator is undefined.
This commit adds operators for such comparisons, as well as a unit test.
Often times we don't care about the output keys, and it's useful to
be able to pass an ArrayHandleDiscard into the algorithm to save
memory in these cases.
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.
By using the auto keyword and decltype we can reduce the number of
complex typedefs that exist when writing device adapter algorithms.
The goal being that it is easier for developers to see the actual
algorithms being implemented, by reducing the amount of template
'noise'.
Previously ArrayHandleReverse would only work if it was provided an explicit
users array to map too. But this doesn't need to be so, if a user wants to
start by constructing an ArrayHandleReverse we should allow that.
The side effect of this, is that some very tricky code in the DeviceAdapters
can be removed, that explicitly was added to allow output to ArrayHandleReverse
The old templated array transfer mechanism generated a lot of code
that ended up doing a simple, type-agnostic memcpy for most devices.
This patch specialized array handles for basic storage and uses a
fast-path array transfer implementation. This reduces the size of the
vtkm_cont library by 27% on gcc (from 6.2MB to 4.5MB).
af61c7e6 Merge branch 'array_handle_reverse_write_2' of gitlab.kitware.com:ollielo/vtk-m into array_handle_reverse_write_2
869c9789 Merge branch 'array_handle_reverse_write_2' of gitlab.kitware.com:ollielo/vtk-m into array_handle_reverse_write_2
14592b82 Merge branch 'master' of gitlab.kitware.com:vtk/vtk-m into array_handle_reverse_write_2
1c50c86a remove commented out code to print values to stdout
80d4ee90 Enable output to ArrayHandleReverse
f64cb5ef Added test for using ArrayHandleReverse as output of ScanInclusiveByKey
87fe6768 thruw ErrorBadType, add PrepareForOutput from Pat
60542804 fixed a typo and added write support for ArrayHandleReverse
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !783
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
ec6589d3 Only enable -fPIC on component static libraries when necessary.
cbfe5fdd Fix up various issues with ArrayHandles in vtkm_cont.
355eea88 Get the vtkm cont cuda object to compile properly.
6ecc22bb First pass at compiling ArrayHandle into vtkm_cont.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !715
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.
18c4190d Update classes using RuntimeDeviceTracker
200928ef Add a global RuntimeDeviceTracker
a3573117 Compile RuntimeDeviceTracker.cxx with CUDA when appropriate
814b2db1 Add the implementation of RuntimeDeviceTracker to cont library
b9d3206e Move RuntimeDeviceTracker to vtkm::cont
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !707
Before it was in the vtkm::cont::internal namespace. However, we expect
to be using this feature quite a bit more as we want VTK-m to handle
multiple devices effectively (as in, just figure it out and go).
ConnectivityExplicitInternals::PrintSummary blindly attempted to print
all of its arrays regardless of whether they are valid. Trying to print
uninitialized arrays can be invalid in some circumstances. Instead,
check to see of the arrays are valid before printing them out. (This can
give you useful information anyway. There is a difference between an
uninitialized array and one of zero length.)
This makes it easier to see what is going on in the fancy arrays and do
diagnostics.
This change required some changes to printSummary_ArrayHandle to support
more array types.
The current design for ArrayPortalVirtual makes it a requirement for all
array portals (that it wraps) to have Set defined. Thus, make sure Set is
defined for all ArrayPortal. Where Set is invalid, an assert is thrown if
something calls it at runtime.
This reduces the number of weak vtables vtkm generates, resulting in
a reduction of binary sizes for projects that include vtkm classes in
multiple translation units.
Class that need to be passed across dynamic library boundaries such as
DynamicArrayHandle need to be properly export. One of 'tricks' of this
is that templated classes such as PolymorphicArrayHandleContainer need
the Type and Storage types to have public visibility.
This makes sure that all vtkm storage tags have public visibility so
in the future we can transfer dynamic array handles across libraries.
b97b4cc7 Allow thrust::reduce to work when iterator and initial value types differ.
64bcc343 Refactor MinAndMax to use vtkm::Vec<T,2> instead of Pair.
8d60ed57 Refactor MinAndMax to be a shared binary operator.
18375b54 Update Bound computations to always use a single Reduce call
2cfc9743 Reduce can support reduce to a T type that isn't the arrayhandles T type.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !614
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.
This is a fancy array handle that can group entries in another array by
arbitrary amounts. This allows us to implement input and output arrays
with a different sized Vec for each instance. This is necessary for
generating new topologies with cells of different types.
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.
