RegionGrowingSegmentation post build event fix
In the 3.0-beta SDK the RegionGrowingSegmentation doesn't build because of its post build event. Using the following worked: copy RegionGrowingSegmentation_Kernels.cl "$(OutDir)" /Ycopy...
View Articlemaximum number of GPUs?
Is there a maximum number of GPUs that can be used for OpenCL computing? I heared there is a hard limit of 8 with the current linux drivers, but I'm not sure on windows. Technically it's not so...
View Articlefglrx: NBody with GPU0 and high -x (num of particles) causes X to...
Hello all, Hardware is HD 5970. aticonfig --list-adapters: * 0. 06:00.0 AMD Radeon HD 5900 Series 1. 07:00.0 AMD Radeon HD 5900 Series * - Default adapter Three monitors are connected to adapter 0...
View ArticleclEnqueueWriteBufferRect does not work when region width is not equal to src...
I have already reported this problem in an earlier post: http://devgurus.amd.com/thread/160312 and the error has been fixed in Catalyst 13.4.However, the error seems to be reintroduced in Catalyst...
View ArticleclEnqueueReadBufferRect/clEnqueueWriteBufferRect are broken in 14.12 driver
clEnqueueReadBufferRect/clEnqueueWriteBufferRect worked with no problems in 14.9 and 14.4, but now in 14.12 they are completely broken on HD6950 / Win7 x64.Can anyone else confirm this? Even trivial...
View ArticleMissing a nibble in last writes of debug output
I am testing a thing which needs a fairly high amount of bytes. For this reason, I'm writing some bytes to a debug output and dumping them to disk.I've noticed however the last byte written (especially...
View ArticleAMD APP plugin and Visual Studio 2013
I just installed the AMD APP 3.0 Beta on my system. I used to use the Intel SDK, but I uninstalled it. I notice that the plugin is not loading in visual studio. I do get "CL Convert to and from to a...
View Articlewave synchronous programming
I have a kernel with work group size equal to 32. Is it safe to remove all local memory barriers, since32 is <= size of a wavefront? The following thread seems to imply that it is NOT good to...
View ArticleGuide to run OpenCL headless, without X server and as normal user
EDIT: this guide is no more relevant as from catalyst 14.12 omega it is supported to run OpenCL applications without Xserver. read discussion below. You may know that you can run OpenCL program as root...
View ArticleCL_INVALID_CONTEXT error when using clCreateFromGLBuffer()
Hello All! I'm new to OpenCL-GL interop , while trying to use clCreateFromGLBuffer() , I encountered an error CL_INVALID_CONTEXT. However, I have already declared vbo buffer and filled the buffer data...
View ArticleOpenCL Samples Visual Studio Compile Errors
I just downloaded the the AMD OpenCL SDK and tried compiling one of the samples in Visual Studio 2010. These are the errors I get:Error 1 error C1083: Cannot open include file: 'CL/cl.hpp': No such...
View Articleglobal memory write cache race condition under load - Opencl 1.1, 14.9 and...
Hi, I have the following sync issue:I have a kernel that does some output to a buffer. after calling the kernel I issue a cl::finish (also tried waitforevents, enqueueBarrier etc.) on that queue and...
View ArticleBuilding the SDK on a new Ubuntu
Ubuntu 11.10 64-bit Hi!I know it is not officially supported, but it might occur to others also they want to build SDK on new Ubuntu, or it could come in handy when releasing new Catalyst and SDK. I'm...
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OpenCL 2.0 Atomics and fine-grain system SVM not available on Lenovo E555...
Hi there, Very recently I bought the budget "business" laptop referred to in the title to this thread. It's obviously no beefy hardware and does not come with an additional cross-fire dGPU. I bought it...
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Are we going to see shuffle in CL?
I honestly forgot about it, but a couple of weeks ago realhet informed me shuffle is there for GCN at ISA level.I could recall something about it and after a while I recalled a few pictures in GS-4106...
View ArticleWhy does the OpenCL driver attempt to dlopen libGL.so?
Hi, this is related to an issue i already reported a while ago and that came up in several other discussions (see Opengl interop / clCreateContextFromType segfault). It is obvious then when i make use...
View ArticleInternal Error : failed to find as
I am trying to install AMD APP SDK 2.9.1 on Linux (RHEL 7), initially just for the CPU device; I plan to test with Radeons once that is working. I followed the instructions for 'non-root installation'....
View ArticleZero Copy on Kabini
Hi there, I port part of my application (a optimized HEVC decoder) from CPU to on GPU and found the memory copy is a bottleneck, on every GPU from AMD, NVIDIA, Intel.So I would like to apply the zero...
View ArticleHostDevice Memory Transfer during Kernel-Run?
Heyho, i try to transfer some data between Host and OpenCL Device during the Kernel Run,by use of "cl_mem_use_persistent_mem_amd" i figured out that i can create an Pointer to an Buffer,this works on...
View ArticleOpenCL Programming Course
Oregon State University is taking its Desktop Parallel Programming course online through its Ecampus program. This will let students learn this important skill any time they'd like while being dressed...
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