ff4ad96ef Do not print extra information on Kokkos and CUDA.
321571fab Make sure operator precedence is correct over macro invocation.
94a32bf64 Improve code in response to review.
568c0b5d2 Small formatting changes.
a8e25da0a Add __func__ to unit test metadata printed on failure.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@acm.org>
Merge-request: !2469
The both the underlying `UnknownArrayHandle` and `ArrayHandleVirtual`
handle `ArrayHandleCast` specially. This caused problems when passing an
`ArrayHandleCast` to `VariantArrayHandle::AsVirtual`. Solve the problem
by stripping out the cast storage tags and letting these classes handle
it internally.
It's annoying to have to fix a problem in a method of a deprecated class
that returns another class that is deprecated for a different reason. No
one should really be running this.
`UnknownArrayHandle` treats a `ArrayHandleCast` and
`ArrayHandleMultiplexer` special. When you put one of these arrays in an
`UnknownArrayHandle`, it takes the original array out and stores it. If
you try to take an array of that type out, it will again do the proper
conversion.
The only problem is that if you use `IsType`, the result can be
unexpected. This is what happened with `CastAndCall`, which was using
`IsType` internally. Changed that to `CanConvert` to properly get the
array handle out.
`VaraintArrayHandle` has been replaced by `UnknownArrayHandle` and
`UncertainArrayHandle`. Officially make it deprecated and point users to
the new implementations.
1c9ae402b Deprecate vtkm/BinarySearch.h, it is unused and similar to LowerBound
26d9ecb39 split vtkm/Algorithms.h into UpperBound.h, LowerBound.h, and BinarySearch.h
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@acm.org>
Merge-request: !2455
When the dispatcher does it's "transport" phase, it returns an
"execution object", but this object is held in the control environment
(on the host) although it may point to resources in the execution
environment (on the device). For this object to get from host to device,
it must be trivially copyable. If it is not, compile and/or runtime
errors could occur. So force this condition with a static assert.
Using this internal class is a bit tricky because it requires a pointer
to a C array that is expected to contain portals. Both the C array and
the portals must be defined for the expected device. This is already
handled by the associated Storage. Assuming all of this holds, make sure
the `ArrayPortalRecombineVec` is trivially copyable. This is a
requirement for passing objects to the execution environment.
6921b5cc3 Minor style changes in UnitTestVariant
6ccb32d27 Slight comment changes
647bc94fe Reduce the number of lines required to implement Variant::CastAndCall
991eeba9f Reduce the number of lines required to implement VariantUnion
7607736ef Reduce the number of lines required to implement AllTrivially*
9816c422b Add padding to Grid struct in CellLocatorTwoLevel
e480fd7a2 Support copying a Variant to itself
d2d9ba332 Make connectivity structures trivially copyable
...
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2444
a683a8802 add support for removing annotations and remove from regression tests
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Matt Larsen <larsen30@llnl.gov>
Merge-request: !2433
There appears to be a bug in CUDA 9.2 where if you have a class that
contains a struct that itself has to have padding in the middle for
alignment purposes and you then put that class in a union with other
classes, it seems like that padding can cause problems with other
objects in the union.
It always worked to trivially copy these classes, but the compiler did
not think so because copy constructors were defined. Change these
constructors to be default so that the compler can properly check
triviality.
For some reason some versions of the CUDA compiler would return true for
`is_trivially_copyable` on a `VariantUnion` even when the types of the
union caused the copy constructor to get deleted.
Solve the problem by using `AllTriviallyCopyable` instead of directly
caling `is_trivially_copyable` on the union.
Nvcc was having troubles resolving the return type of the overloaded
function to get a value out of a `VariantUnion`. Replace the
implementation with a class with specializations. This is more verbose,
but easier on the compiler.
Create a `VaraintUnion` that is an actual C++ `union` to store the data
in a `Variant`.
You may be asking yourself, why not just use an `std::aligned_union`
rather than a real union type? That was our first implementation, but
the problem is that the `std::aligned_union` reference needs to be
recast to the actual type. Typically you would do that with
`reinterpret_cast`. However, doing that leads to undefined behavior. The
C++ compiler assumes that 2 pointers of different types point to
different memory (even if it is clear that they are set to the same
address). That means optimizers can remove code because it "knows" that
data in one type cannot affect data in another type. To safely change
the type of an `std::aligned_union`, you really have to do an
`std::memcpy`. This is problematic for types that cannot be trivially
copied. Another problem is that we found that device compilers do not
optimize the memcpy as well as most CPU compilers. Likely, memcpy is
used much less frequently on GPU devices.
`vtkm::cont::Error` inherits from `std::exception`. As such, it has a
special `what` string that reports an error message in a standard way.
This is particularly useful when a `vtkm::cont::Error` exception remains
uncaught because the system will print the `what` string before
crashing.
Unfortunately, the `what` string was only being set in the `Error`
constructor that took a message. That is a problem for subclasses like
`ErrorCuda` that used the default constructor and then used
`SetMessage`. The `what` string did not get set in this case.
Change the behavior to capture the stack trace in the default
constructor and update the `what` string if a subclass uses
`SetMessage`.
Although it makes sense to assume a pointer is `volatile` when doing an
atomic operation, the arguments to the `atomicCAS` overloads take
regular pointers. The overload resolution can fail if you use the
`volatile` keyword.
