opencl-c

Char*** in OpenCL kernel argument?

由 纵然是瞬间 提交于 2021-02-04 06:25:29
问题 I need to pass a vector<vector<string>> to a kernel OpenCL. What is the easiest way of doing it? Passing a char*** gives me an error: __kernel void vadd( __global char*** sets, __global int* m, __global long* result) {} ERROR: clBuildProgram(CL_BUILD_PROGRAM_FAILURE) 回答1: In OpenCL 1.x, this sort of thing is basically not possible. You'll need to convert your data such that it fits into a single buffer object, or at least into a fixed number of buffer objects. Pointers on the host don't make

How to accumulate vectors in OpenCL?

由 时光毁灭记忆、已成空白 提交于 2019-12-24 09:57:49
问题 I have a set of operations running in a loop. for(int i = 0; i < row; i++) { sum += arr1[0] - arr2[0] sum += arr1[0] - arr2[0] sum += arr1[0] - arr2[0] sum += arr1[0] - arr2[0] arr1 += offset1; arr2 += offset2; } Now I'm trying to vectorize the operations like this for(int i = 0; i < row; i++) { convert_int4(vload4(0, arr1) - vload4(0, arr2)); arr1 += offset1; arr2 += offset2; } But how do I accumulate the resulting vector in the scalar sum without using a loop? I'm using OpenCL 2.0. 回答1: The

Proper way of compiling OpenCL applications and using available compiler options

由 早过忘川 提交于 2019-12-22 12:30:45
问题 I am a newbie in OpenCL stuffs. Whats is the best way to compiler an OpenCL project ? Using a supported compiler ( GCC or Clang ): When we use a compiler like gcc or clang , how do we control these options? Are they have to be set inside the source code, or, likewise the normal compilation flow we can pass them on the command line. Looking at the Khornos-Manual-1.2, there are a few options provided for cl_int clBuildProgram for optimizations. : gcc|clang -O3 -I<INCLUDES> OpenCL_app.c

Proper way of compiling OpenCL applications and using available compiler options

由 一曲冷凌霜 提交于 2019-12-22 12:30:37
问题 I am a newbie in OpenCL stuffs. Whats is the best way to compiler an OpenCL project ? Using a supported compiler ( GCC or Clang ): When we use a compiler like gcc or clang , how do we control these options? Are they have to be set inside the source code, or, likewise the normal compilation flow we can pass them on the command line. Looking at the Khornos-Manual-1.2, there are a few options provided for cl_int clBuildProgram for optimizations. : gcc|clang -O3 -I<INCLUDES> OpenCL_app.c

Code terminates after saying COULD NOT CREATE KERNEL on Eclipse

由 会有一股神秘感。 提交于 2019-12-12 04:20:02
问题 I am trying to translate a sequential C code for a MJPEG decoder into OpenCL. I got the C code from this github project. I am now trying to convert the original C code for IDCT into OpenCL. I copied and pasted the code from the .c file for IDCT and pasted into my .cl file which I named invCosine.cl . invCosine.cl : #define IDCT_INT_MIN (- IDCT_INT_MAX - 1) #define IDCT_INT_MAX 2147483647 /* * Useful constants: */ /* * ck = cos(k*pi/16) = s8-k = sin((8-k)*pi/16) times 1 << C_BITS and * rounded

Proper way of compiling OpenCL applications and using available compiler options

由 心已入冬 提交于 2019-12-06 09:35:06
I am a newbie in OpenCL stuffs. Whats is the best way to compiler an OpenCL project ? Using a supported compiler ( GCC or Clang ): When we use a compiler like gcc or clang , how do we control these options? Are they have to be set inside the source code, or, likewise the normal compilation flow we can pass them on the command line. Looking at the Khornos-Manual-1.2 , there are a few options provided for cl_int clBuildProgram for optimizations. : gcc|clang -O3 -I<INCLUDES> OpenCL_app.c -framework OpenCL OPTION -lm Actually, I Tried this and received an error : gcc: error: unrecognized command
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