agents: message block send to all targets?
From what I've understood the existing message blocks (e.g unbounded_buffer) always propagate messages to the first target that accepts it. Is there a good way to "broadcast" messages to all targets?...
View ArticleCPU fallback on C++ AMP?
Hello all, I'm looking into using AMP with my .NET class library (P/invoke). Am I correct in my assumption that if something should go wrong with a GPU kernel launch, the AMP method will fall back to...
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Indexing into different sized arrays in AMP parallel_for_each
I have been attempting write a convolution kernel in AMP to process the depth data from a Kinect and I've been experiencing some problems. I want to make the results form the kernel simply become...
View Articlearray_view back to old value when using p-f-e
Hi . I have hit the wall again..please help. please look at following code. float data[1]; array_view<float,1> dm(1,data); data[0]=2;//dm[0]=2 at this point 100% sure about it....
View ArticleRegister spilling with C++ AMP and GPUs
Hi, I ported a complicated hydrological model into OpenCL with good results. However, there was some register spillage due to the size of the model and the inability to break it up easily. C++ AMP has...
View ArticleC++ AMP, custom CPU fallback - PPL?
Hi all, Newbie to C++-AMP here... I am currently working on a largish bunch of OpenCL prototype code that should go into product in 6-10 months. The code is executed on GPU or CPU depending on customer...
View ArticleWhere do I submit feature requests?
Where do I submit feature requests? I have some feature request (and will probably have more) and would like to know where is the best place to put those? e.g. staging texturecopy with pitch overload...
View ArticleWhen would I wait for a texture/array upload?
In the context of the following method: concurrency::completion_future copy_async(const void * _Src, unsigned int _Src_byte_size, texture<_Value_type, _Rank>& _Dst) What does it mean to wait...
View ArticleCopy between textures always goes through host?
Looking at the implementation for graphics::texture I notice that the copy is always performed by downloading src data to the host and then uploading to dst on the device. This seems rather...
View ArticleWhat is the accuracy of short vector types?
What is the accuracy of short vector types? e.g. unorm4, is that 8 bit per scalar element or 32 bit during calculations?
View ArticleConvert from float to unorm without clamping?
I'm using fast_math::floor on a value that I know will be in the range of [0.0,1.0] and want to convert it to unorm. Can I do that without wasting computation on clamping?
View ArticleDeadlock
I'm experiencing a deadlock when running the following code in debug mode (works fine in release mode). concurrency::graphics::unorm quantize(concurrency::graphics::unorm value, float range)...
View ArticleC++ AMP, general 1D custom CPU fallback to PPL
Hi all, (moving specific question from originating discussion "C++ AMP, custom CPU fallback - PPL?") Is it possible to use PPL (for executing lambdas) together with cpu_accelerator (for memory...
View ArticleMicrosoft Visual C++ 2005 Express Edition
I have a problem Registering Microsoft Visual C++ 2005 Express Edition, please send me a link to register, cause the link in Dialogue Box of Registering Visual C++ is'nt working!
View ArticleHow to show the special one of XPS Documents?
I want show one of the xps document depend on index.I want do it in following way ....... String ^strFileName = gcnew String(lpFileName); XpsDocument ^xpsDoc = gcnew XpsDocument(strFileName,...
View ArticleHow to watch reference variables using CUDA Parallel NSight debugger in...
I can properly watch any variable or pointer but cannot do it for reference variables when debugging with NSight. I have already tried to convert the reference to pointer in the watch or immediate...
View ArticleQueue up work to be done in io callbacks on the same thread
hi. i use winhttp i need for a given conection to queue up work to be done on the same threadpool thread so i dont have issue in synchronizing callbacks called for the same connection. how would you...
View ArticleStore array in graphics memory for later use
I am working on a matching algorithm that searches through 10000 of vectors for the closest match. Each vector consists of 100 floats. Can I somehow store the vectors in the graphics memory at the...
View ArticleC++ AMP Double precision capable cards
Is there any currently available card that has full double precision capability? I tested on a GT 650M and HD 4000 and both claim support for "limited double precision" with addition, multiplication...
View ArticleCan I create a c++/clr test function to test OpenCL functions base on AMD GPU...
I am currently using VS2010 to create some kernels base on AMD GPU But when I create a c++/clr test project to do the unit test there is an error which is 'the agent process was stopped while the test...
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