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Questions tagged [opencl.net]

25 questions
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Correct way to dispose IMem objects created using OpenCL.net

I am having memory corruption problems when I explicitly dispose IMem objects created by OpenCL.Net (v2.2.9). If I don't call IMem.Dispose() the video card memory is not released. Unfortunately I found too few examples on the subject. Here a single…
stenio
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There are two circular statement, how can l write it in opencl kernel?

There are two circular statement, for example: for(int i=0;i<1000;i++) for (int j=0;j<1000;j++) { for(int k=i*5;k
bangy ge
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clCreateContextFromType ends up in a SEGFAULT while execution

I am trying to create an OpenCL context on the platform which is containing my graphics card. But when I call clCreateContextFromType() a SEGFAULT is thrown. int main(int argc, char** argv) { /* ... */ cl_platform_id*…
Tobias Off
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clGetDeviceInfo and clGetPlatformInfo fails in OpenCL with error code -30 (CL_INVALID_VALUE)

I am starting to write a little "engine" for using OpenCL. Now, I encountered a problem that is quite strange. When I call clGetDeviceInfo() to query informations of the specific device, some of the options for the parameter param_name return the…
Tobias Off
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Why can't I make a context on a cpu device?

I have some kernels working on a gpu, however I cannot assume the code will be used only on computers with a compatible gpu. I have tried to run the same kernels using a cpu device but when I try to make the context I constantly get an…
Lango
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Incorrectly including cloo in C#?

I'm trying to get this demo to build but I get this error I've tried this with mono and visual studio 2010, same problem The error occurs on line program.Build(null, null, null, IntPtr.Zero); EDIT C# using System; using Cloo; using…
sav
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Passing structure to openCL Kernel

I want to pass a structure to opencl kernel, the structure is struct test { int *x; float *y; char *z; }; and the memory allocation and initialization is like struct test t; t.x = (int*)malloc(sizeof(int)*100); t.y = (float*)…
Meluha
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OpenCL imaging - only one pixel is updated

I'm using Opencl.net and I'm trying to do some image processing on the GPU. Unfortunately only the first pixel ([0;0]) has the correct value, and the rest is (0;0;0;0). The OpenCL kernel should assign 0.5 to all color components of every pixel. It…
Ilya Suzdalnitski
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AMD OpenCL C Compiler notes dead and deleted loops which shouldn't be dead and deleted

I have the following loop executed in my OpenCl kernel: __kernel void kernelA(/* many parameters */) { /* Prefetching code and other stuff * ... * ... */ float2 valueA = 0.0f; #pragma unroll …
Tobias Off
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An unhandled exception of type 'System.AccessViolationException' occurred in OpenCLNet.dll

An unhandled exception of type 'System.AccessViolationException' occurred in OpenCLNet.dll @ Platform test = new Platform(platformid); and "platformID" has a value of 1 in runtime. public class Program { static void Main(string[] args) { …
user3795555
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