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Questions - pyopencl

opencl skipping data during operation on struct

I have a custom struct on which I want to do an operation to reduce the field scalar1 on all my structs. It is a very straightforward operation. It seems the subtraction is happening, but OpenCL does ...
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PyThagoras

python

opencl

gpgpu

pyopencl

Votes: 0

Answers: 1

Latest Answer

The concept of memory alignment was unknown to me. From the OpenCL 1.2 specification, chapter 6.1, we learn that types have to be align on a 2^X. My struct is thus misaligned because it has a size of ...
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PyThagoras

pyopencl initialize non zero float4 array

I want to populate an array with float4 type. I have no idea how to initialize the arrays with something else than zeros. I've tried variations of this, but this is what I've come with, that explains ...
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PyThagoras

python

numpy

opencl

pyopencl

Votes: 0

Answers: 2

Latest Answer

Without the cl stuff, here's a sample array creation In [50]: myStruct = np.dtype( ...: [("position", float), ...: ("direction", float), ...: ...
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hpaulj

Memory Crash on Intel CPU when running OpenCL code for particular input

I'm working on running my OpenCL codes on CPU and GPU. I'm experiencing some memory crash issue when I run my OpenCL code on CPU that is for particular input vector...I'm not seeing the issue when I ...
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Waseema Risaana

c++

c++11

opencl

intel

pyopencl

Votes: 0

Answers: 2

Latest Answer

The issue has been resolved. It was due to accessing buffers out of bounds, where CPU caught it and thrown exception but GPU ignored it. For that particular vector the logic has to be changed slightly...
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Waseema Risaana

Opencl clGetDeviceIDs(platform, CL_DEVICE_TYPE_CPU, 0, NULL, &num_devices) returning -1

I'm using Intel OpenCL SDK. Last month, when I tried to run my opencl code on CPU present in my system , by clGetDeviceIDs(platform, CL_DEVICE_TYPE_CPU, 0, NULL, &num_devices), it worked..and numb...
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Waseema Risaana

opencl

intel

cpu-architecture

pyopencl

opencl-c

Votes: 0

Answers: 1

Latest Answer

Intel OpenCL runtime for GPU is a part of Intel GPU driver. So, it is enough to install the GPU driver from Intel and you will be able to get OpenCL device for Intel GPU. But Intel OpenCL runtime for ...
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Egor

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