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https://community.amd.com/thread/127773
Mar 02, 2010 · I tried to run the same code on nvidia device. I get an error, opencl does not support variable array length. Thanks for reporting this issue. i think only why is, using __global array as kernel parameter. but there i can't use 2dArrays. so i can't run the function in the kernel above. does anyone now a why run a function like this in parrallel ...Reviews: 31
https://en.wikipedia.org/wiki/OpenCL
OpenCL (Open Computing Language) is a framework for writing programs that execute across heterogeneous platforms consisting of central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs) and other processors or hardware accelerators.OpenCL specifies programming languages (based on C99 and C++11) for …Operating system: Android (vendor dependent), …
https://stackoverflow.com/questions/8572761/opencl-outputting-an-array-of-variable-length
So our OpenCL program needs to take a list of triangles and output a variable list of points. And outputting a variable length array seems to be a problem. The solution we found is to atomically increment a counter and use that counter as both an index into the output array and a …
https://scicomp.stackexchange.com/questions/8324/returning-variable-length-arrays-in-opencl
Since buffer's sizes fixed at the moment they created, the only way is to simulate variable length arrays: Create an array of maximum size and use an extra variable so that OpenCL-kernel can store how much of this (max)array is in use.
https://stackoverflow.com/questions/17574570/create-local-array-dynamic-inside-opencl-kernel
I have a OpenCL kernel that needs to process a array as multiple arrays where each sub-array sum is saved in a local cache array. ... Create local array dynamic inside OpenCL kernel. Ask Question Asked 6 years ... upon the kernel invocation. Note, that extra checks may be necessary to ensure that required local memory size does not exceed the ...
https://opencl.org/2017/12/c-to-c-kernel-porting-guidelines/
and, like C++, OpenCL C++ does not support variable length arrays (ISO C99, Section 6.7.5). To avoid potential confusion with the above, please note the following features are supported in OpenCL C++: All variadic templates (ISO C++ Section 14.5.3) including variadic function templates are supported. OpenCL C++ Specification References
https://devtalk.nvidia.com/default/topic/462901/2d-array-using-opencl-arrays-vs-images-38-how-to/
Aug 12, 2010 · 2D Array using OpenCL Arrays vs Images & How-to. Reply. Follow. Hello all, ... that OpenCL can support 2D arrays (it still probably can, I just haven't found a good way of doing it yet that I like). The way I posted does not work since cl_mem does not have a size associated with it, and the compiler doesn't like having to return a struct with ...
https://software.intel.com/en-us/articles/opencl-programming-for-cpu-performance/
Dec 21, 2011 · OpenCL does not allow recursion, function pointers, variable length arrays, etc., so check the specification to be sure that the algorithm is supported under the OpenCL framework. Algorithms such as constraint solvers usually perform better on CPUs, as these algorithms need conditional statements.
http://kineme.net/forum/Discussion/DevelopingCompositions/OpenCLoutputarraylength
Apr 10, 2011 · Re: OpenCL : output array length. dust wrote: i think what chris is saying and i'm not one to pimp code like he does but on each execution a new array is getting allocated, which isn't being really used because your not adding to the allocated array, your assigning the component array to it which is just reallocating i suppose.
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