opencl

How to use OpenCL on Android?

由 亡梦爱人 提交于 2019-12-17 15:32:44
问题 For plattform independence (desktop, cloud, mobile, ...) it would be great to use OpenCL for GPGPU development when speed does matter. I know Google pushes RenderScript as an alternative, but it seems to be only be available for Android and is unlikely to be ever included in iOS. Therefore I seek for a solution to execute OpenCL code within Android Apps. 回答1: The only Android devices I know that support OpenCL are the ones based on the Mali T600 family of chips (article here). They have an

Why did Google choose RenderScript instead of OpenCL [closed]

由 醉酒当歌 提交于 2019-12-17 10:24:58
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . I've been wondering if it was possible to use OpenCL for Android, find out that it wasn't possible, and dropped the subject altogether

在Go里使用OpenCL,"下雨天压榨GPU更配哦"

由 可紊 提交于 2019-12-14 19:05:10
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 原文标题: 能在Go里用GPU运算的OpenCL语言绑定包 首先网页访问 https://github.com/pseudomind/go-opencl/ 了解一下,然后下载它 C:\ go \src\src> go get github.com/pseudomind/ go -opencl/cl 再搜索一下你的 OpenCL.dll 文件,把它复制到gcc编译器的lib目录里 比如我在c盘搜索出 opencl.dll ,把它复制到了 C:\TDM-GCC-32\lib\ 里 用LiteIDE打开 https://github.com/pseudomind/go-opencl/tree/master/examples/clinfo 里面的例子,可以 run 了 examples/rotate 里面的例子,要build后,在cmd窗口下运行,是一个旋转图片的例子,需要一张png格式的图片.使用方法输入 rotate.exe -h 并回车 你可以想象, CPU+GPU 协作 会有多快. 未来的操作系统都将采用这种技术加速自身的运行速度 地球上目前最快的hash码匹配破解软件名为 oclHashcat ,软件就是用GPU参与运算 还有用GPU运算的 Photoshop 同类软件,叫 Musemage

Trying to mix in OpenCL with CUDA in NVIDIA's SDK template

由 你。 提交于 2019-12-14 02:38:44
问题 I have been having a tough time setting up an experiment where I allocate memory with CUDA on the device, take that pointer to memory on the device, use it in OpenCL, and return the results. I want to see if this is possible. I had a tough time getting a CUDA project to work so I just used Nvidia's template project in their SDK. In the makefile I added -lOpenCL to the libs section of the common.mk. Everything is fine when I do that, but when I add #include <CL/cl.h> to template.cu so I can

OpenCL - using atomic reduction for double

由 泄露秘密 提交于 2019-12-14 02:29:17
问题 I know atomic functions with OpenCL-1.x are not recommended but I just want to understand an atomic example. The following kernel code is not working well, it produces random final values for the computation of sum of all array values (sum reduction) : #pragma OPENCL EXTENSION cl_khr_int64_base_atomics : enable void atom_add_double(volatile __local double *val, double delta) { union { double f; ulong i; } old, new; do { old.f = *val; new.f = old.f + delta; } while (atom_cmpxchg((volatile _

Pinned memory OpenCL, has anybody successfully used it?

由 南笙酒味 提交于 2019-12-14 01:28:49
问题 I used the CL_MEM_ALLOC_HOST_PTR flag with my clCreateBuffer calls, but the Compute Profiler shows all my "host mem transfer type" as being Pageable. I tried it in two different kernel setups, but the profiler wouldn't show that I was using pinned memory. Is it just really random when a kernel gets to use pinned memory? Is it constrained by something? I am guessing the size of the buffer matters. I tried one buffer of a size of 10,000 floats and I still got Pageable memory. Let me know what

Download OpenCL AMD APP SDK 3.0 for windows and linux

由 瘦欲@ 提交于 2019-12-14 01:12:09
问题 I want to download standalone version of OpenCL AMD APP SDK 3.0 for Windows and Linux. 回答1: AMD has remove the files from their servers. There is a copy in the internet here: For Windows For Linux 回答2: Or you can use OCL SDK instead https://gpuopen.com/compute-product/opencl-sdk/ https://github.com/GPUOpen-LibrariesAndSDKs/OCL-SDK/releases 来源： https://stackoverflow.com/questions/53070673/download-opencl-amd-app-sdk-3-0-for-windows-and-linux

Where do I find strings for Error code in OpenCL (Nvidia )?

由 陌路散爱 提交于 2019-12-13 21:22:44
问题 Running a simple OpenCL Matrix Multiplication code on NVIDIA GPU, I get error code -30. I want to know what is the meaning of this code. I am sure the string corresponding to this code (int) must be stored somewhere. Can someone help me in interpreting this code? Once I know what this error mean I can debug my code easily. 回答1: From the CLEW library: const char* clewErrorString(cl_int error) { static const char* strings[] = { // Error Codes "CL_SUCCESS" // 0 , "CL_DEVICE_NOT_FOUND" // -1 ,

OpenCL global worskize interpreted differently on Haswell & Kabylake iGPUs

由 家住魔仙堡 提交于 2019-12-13 20:46:25
问题 Our kernel is initialized with: size_t localWorkSize[1] = {1}; size_t globalWorkSize[2] = {60, 80}; The kernel implements a typical convolution on an image file. It works fine on a machine with a Kabylake iGPU, but when executing it on Haswell or Bay Trail machines the global work size is interpreted as {60, 60} and therefore executes with a wrong NDRange. On all systems our platform is OpenCL 1.2 beignet 1.3 Is this a known issue? Or is there a hardware-dependent limit to the global work

Android with OpenCL video processing

由 …衆ロ難τιáo~ 提交于 2019-12-13 19:07:54
问题 I am making an Android app to test the differences between OpenCL and RenderScript. Right now I'm trying to optimize the video processing code of OpenCL but I can only process the first frame and all others are black. All my functies work with images, and when I recall the init before every video frame and then the edge detection fucntion, all goes well. But it does not seem logic that I need to rebuild the OpenCL program everytime it gets excecuted (when it's the same kernel). I have a
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