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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://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/9245376/opencl-invalid-command-queue-error-when-copying-from-private-memory-to-global
Trying to compile the kernel brings up: error: openCL does not support variable length arrays int copy[width]; – rdoubleui Feb 12 '12 at 20:15 3 Variable-length arrays are not supported per the spec.
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 ...
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.
https://programmer.group/no.7_4-opencl-synchronization-work-item-synchronization.html
OpenCL does not define the synchronization operation of work items between working groups, and the synchronization point (barrier) can not work on part of the work items in the working group. ... OpenCL C does not support defining variable-length arrays like C99. In OpenCL, if the length of the array is uncertain, the device side will report an ...
http://www.sidefx.com/docs/houdini/vex/arrays.html
To declare an array variable, ... To avoid this error, use the array() function which constructs the array at runtime from any number of arguments: ... Currently VEX does not support multi-dimensional arrays. Arrays cannot be passed between shaders (through simport, etc.).
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