Public bug reported:
I'm using ubuntu 18.04 amd64. The following code eats up the system
memory and after the 22000th iteration the clEnqueueNDRangeKernel fails
with error -5 (CL_OUT_OF_RESOURCES):
cl_int errorcode;
cl_event event;
size_t global_item_size = biases.row;
for(int i = 0; i < 50000; i++)
{
errorcode = clSetKernelArg(this->testkernel, 0, sizeof(int),
(void*)&input.row);
errorcode |= clSetKernelArg(this->testkernel, 1, sizeof(cl_mem), (void
*)&(weights.cl_mem_obj));
errorcode |= clSetKernelArg(this->testkernel, 2, sizeof(cl_mem), (void
*)&(input.cl_mem_obj));
errorcode |= clSetKernelArg(this->testkernel, 3, sizeof(cl_mem), (void
*)&(biases.cl_mem_obj));
errorcode |= clSetKernelArg(this->testkernel, 4, sizeof(cl_mem), (void
*)&(output.cl_mem_obj));
errorcode |= clEnqueueNDRangeKernel(this->command_queue,
this->testkernel, 1, NULL, &global_item_size, NULL, 0, NULL, &event);
if(errorcode != CL_SUCCESS)
{
cerr << "failed to lauch the kernel " << errorcode << endl;
throw exception();
}
//clFlush(this->command_queue);
//clFinish(this->command_queue);
clWaitForEvents(1, &event);
cout << i << endl;
}
The opencl kernel is:
__kernel void test(const int InpRow, const __global float* weights,
const __global float* input, const __global
float* biases, __global float *output)
{
const int globalRow = get_global_id(0);
float acc = 0.0f;
for (int k=0; k<InpRow; k++) {
acc += weights[globalRow*InpRow + k] * input[k];
}
output[globalRow] = acc + biases[globalRow];
}
This problem was not present in ubuntu 16.04.
CPU: i7-4790K
GPU: Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller
OpenCL lib: beignet-opencl-icd:amd64 1.3.2-2
Thank You in advance,
Andrej
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: beignet opencl ubuntu18.04
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https://bugs.launchpad.net/bugs/1776867
Title:
OpenCL-beignet EnqueueNDRangeKernel fails after multiple execution
with error -5
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