opencl Questions

4

Solved

I need compile OpenCL kernels in SPIR-V to use with Vulkan, I tried with Google CLSPV https://github.com/google/clspv, but the problem occur with vectorization, functions like vload8 doesn't work. ...
Friseur asked 18/9, 2018 at 14:27

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UDPATE I found an error in my code. I was running my render function in sub-blocks from years ago and forgot I had set it as such. So it was calling the GPU read function far more often than I thou...
Presentational asked 17/8 at 19:21

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i am trying to run hashcat on my Zen Archlinux i am on the 4.15.4-1-zen kernel version. I have an NVIDIA geforce 920MX and an intel i6189DU. i installed the latest nvidia-dkms drivers and as well a...
Facula asked 24/4, 2018 at 11:31

2

AFAIK it works like this with ICD loader extension: ICD (installable client driver) = proprietary OpenCL implementation = OpenCL runtime; You can find it in files like amdocl.so/dll or IntelOpenC...
Stratiform asked 3/6, 2016 at 11:38

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I have a question on the eigen-decomposition of hundreds of small matrices using CUDA. I need to calculate the eigenvalues and eigenvectors of hundreds (e.g. 500) of small (64-by-64) real symmetr...
Dail asked 9/7, 2012 at 18:51

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In an older version of OpenCV I could render using OpenGL to the backbuffer, used glreadpixels to "copy" the pixels to an OpenCV image (iplimage?) for some processing (blurring, templatematching wi...
Rhodes asked 8/7, 2015 at 5:52

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One thing I haven't figured out and google isn't helping me, is why is it possible to have bank conflicts with shared memory, but not in global memory? Can there be bank conflicts with registers? ...
Maliamalice asked 1/10, 2010 at 21:2

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Following this and this posts, I'm compiling the main.c code on this GitHub Gist. Running CMake command find_package(OpenCL REQUIRED) I get this: -- Looking for CL_VERSION_2_2 - found -- Found ...
Kopeck asked 9/6, 2020 at 16:0

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After finally managing to get my code to compile with OpenCL, I cannot seem to get the output binary to run! This is on my linux laptop running Kubuntu 13.10 x64 The error I get is (Printed from c...
Destinee asked 2/12, 2013 at 18:47

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I'm trying to assess the performance differences between OpenCL for AMD and Nvidia GPUs. I have a kernel which performs matrix-vector multiplication. I'm running the kernel on two different systems...

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I use a notebook in colab and I started to get the following error message: LogicError: clGetPlatformIDs failed: PLATFORM_NOT_FOUND_KHR My code uses PyRQA package, which uses opencl to perform cal...
Grogan asked 26/5, 2023 at 0:30

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I'm following some tutorials on OpenCL and they mention a type called cl::KernelFunctor. However, that type isn't found and when I looked at the headers of the AMD APP SDK, I saw that the declarati...
Spica asked 2/6, 2014 at 10:27

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Is there a way to get OpenCL to give me a list of all unique physical devices which have an OpenCL implementation available? I know how to iterate through the platform/device list but for instance,...
Reclaim asked 1/6, 2012 at 15:0

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I'm not sure if it's possible. I want to study OpenCL in-depth, so I was wondering if there is a tool to disassemble an compiled OpenCL kernel. For normal x86 executable, I can use objdump to get ...
Prolusion asked 14/7, 2011 at 6:25

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I'm developing on SBC (which have Intel I7 3ed or 4ed, and doesn't have external GPU) I'm using linux. I want to take the advantage of Intel processor graphics . I thought to learn developing with ...
Hairsplitter asked 13/6, 2015 at 14:57

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I'm trying to compile an openCL program on Ubuntu with an NVIDIA card that worked once before, #include <CL/cl.h> #include <iostream> #include <vector> using namespace std; int...
Botticelli asked 16/10, 2011 at 9:10

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I am using ATI RV770 graphics card, OpenCl 1.0 and ati-stream-sdk-v2.3-lnx64 on linux. While running my host code which includes following two sections to build kernel program, i am getting error ...
Bunk asked 27/2, 2012 at 11:23

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Recently I want to develop the parallel computing application on android use OpenCL. As far as I know, Android system does not include "libopencl.so",but there are still some webs or blogs show Ope...
Glyptography asked 7/11, 2014 at 7:8

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I am trying to start working with OpenCL. I have two NVidia graphics card, I installed "developer driver" as well as SDK from NVidia website. I compiled the demos but when I run ./oclDeviceQuery ...
Cracow asked 10/2, 2011 at 16:13

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As I know. Constant memory on CUDA is a specific memory. And it is faster than global memory. But in OpenCL's Spec. I get the following words. The __constant or constant address space name is u...
Selenium asked 28/8, 2012 at 5:51

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I would like to develop a library with an algorithm that can run on the CPU or the GPU. The GPU can be Nvidia (then the algorithm will use CUDA) or not (then the algorithm will use OpenCL). I woul...
Eulogium asked 7/11, 2016 at 9:31

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Is there a way to run app that uses OpenGL/OpenCL interoperability on a headless server? Maybe without hardware acceleration. Maybe using some library for offscreen rendering. Now there are plenty...
Herman asked 29/10, 2014 at 20:15

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Having stumbled over this forum thread, dot product faster on cpu than on gpu using OpenCL, I was reminded again, that there are instances, which look like they're made for OpenCL*, but where they'...
Haberdasher asked 20/4, 2011 at 12:13

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I know that there is function clock() in CUDA where you can put in kernel code and query the GPU time. But I wonder if such a thing exists in OpenCL? Is there any way to query the GPU time in OpenC...
Milline asked 13/1, 2012 at 10:57

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What is the best way to do programming for GPU? I know: CUDA is very good, much developer support and very nice zo debug, but only on NVidia Hardware OpenCL is very flexible, run on NVidia, ...
Affirmatory asked 11/5, 2022 at 16:4

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