Running the Code below leads to massive main memory consumption by using Radeon WX9100 with driver Version 18.Q1.
At iteration 1000 my program consumes about 1 GiByte Memory.
I also tested the code with AMD FirePro W8100 and a GTX760 and there was no memory leak.
const char szSource[] = "\
const sampler_t Sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP_TO_EDGE | CLK_FILTER_LINEAR;\n\
\n\
__kernel void exampleKernel(\n\
__read_only image2d_t image,\n\
__global float* buffer,\n\
uint4 bufferDim,\n\
float maxValue,\n\
float minValue)\n\
{\n\
size_t valueX = get_global_id(0);\n\
size_t valueY = get_global_id(1);\n\
size_t valueZ = get_global_id(2);\n\
\n\
float imageValue = read_imagef(image, Sampler, (float2)(1,1)).x;\n\
\n\
size_t index = (valueZ*bufferDim.y+valueY)*bufferDim.x+valueX;\n\
\n\
float result = buffer[index];\n\
\n\
result = result + imageValue;\n\
result = clamp(result,minValue,maxValue);\n\
buffer[index] = result;\n\
}\n\
";
std::size_t i = 0;
while(true)
{
const char* strings = szSource;
const size_t lengths = strlen(szSource);
cl_program program = clCreateProgramWithSource(clContext, 1, &strings, &lengths, &error);
if(error != CL_SUCCESS || program == NULL) { std::cerr << "failed to compile program:" << error << std::endl; }
error = clBuildProgram(program, 1, &clDevice, NULL, NULL, NULL);
if(error != CL_SUCCESS) { std::cerr << "failed to build program: " << error << std::endl;}
error = clReleaseProgram(program);
if(error != CL_SUCCESS) {std::cerr << "failed to release program: " << error << std::endl; }
std::cout << i++ << std::endl;
}
