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Free OpenCL Training: YouTube Videos Published
Hi everyone, I have prepared several YouTube videos to provide good quality OpenCL training for free. I add a new video every week or so. This training material differs from most out there, because I...
View ArticleError while compiling opencl samples (pthread_create and DSO related) on Ubuntu.
Hey everyone So I've been trying to compile the opencl samples on my ubuntu laptop but I'm getting this error. /opt/AMDAPP/samples$ cmake -G "Unix Makefiles" . -- Configuring done -- Generating done...
View ArticleOpenCL Error:E010:Irreducible ControlFlow Detected (error on Radeon, work on...
My OpenCL code work on CPU Core i5-750, work on GPU GeForce 9800GT, but don't work on GPU Radeon 280X! status=clBuildProgram(program, 1,devices,NULL,NULL,NULL); clBuildProgram return status with...
View ArticleCat13.4: How to avoid the high CPU load for GPU kernels?
Hi, since 13.4 and 13.5 beta, my OpenCL GPU program consumes ~80% of one CPU core while in clFinish, waiting for a string of GPU kernels and a final clEnqueueReadBuffer. My main thread looks like...
View ArticleGraphics driver crash since 13.4 when using atomic_inc
Hi, I'm using a HD5770 on Win7-64 with Cat13.10. Since 13.4 till today, my appication crashes the GPU driver or even causes blue screens. Now I've been able to provide a small test case based on the...
View Articlesegmentation fault
Hello.I have video card Gigabyte Radeon R9 280x 3072 GDDR5CPU: AMD Athlon ll 2x 2502GB DDR3 (also tryed 4GB) I faced with next problem:While trying to run clinfo im getting segfault: export DISPLAY=:0...
View ArticleBlender Cycles(Opencl on AMD GPUS)
Dear Opencl DeveloperWhy doesn't the AMD opencl compiler work with blender cycles?whenever i compile the blender cycles kernel, the system either crashes due to lack of memory, or takes too long to...
View ArticleBSOD on Windows 7 Embedded
I frequently see a BSOD when creating compute buffers after reboot on Windows 7 Embedded. I don't see any BSOD on a regular Windows 7 Pro though. I can reproduce the same BSOD when running...
View ArticleCan't get OpenCL to work on a pair of ATI 4870 Radeons in Crossfire
I am running a pair of ATI Radeon 4870 GPUs in crossfire mode and trying to get OpenCL to work with them. I have tried a variety of versions of catalyst control center and a variety of versions of AMD...
View Articleread_imagef with image2d_array_t not working properly
Hello,I've noticed a bug with the read_imagef function (and possibly other overloads) when operating on 2D image arrays when using floating-point coordinates. The third coordinate, which represents the...
View ArticleOpenCL installed but won't run anything
I'm learning about OpenCL and crypto currencies and trying to setup a system to learn on. I'm using Ubuntu 12.04 x64 with the AMD Catalyst Drivers 13.1 installed and AMD APP SDK 2.8 installed with an...
View ArticleUnified SDK installer : not launching
Hi, I have download the new Unified SDK installer (Win 64)... but when I try to launch it, a first window appear (User Account Control), it is the system dialog box... byt after nothing happend ! Thx Krys
View ArticleInstall AMDAPPSDK 2.9 on Ubuntu Server 13.10 (64-bit)
Hi! Could someone provide some input as to what packages are required by the SDK samples, preferably all of them, to compile? I would like to say that moving the build system to CMake is an excellent...
View ArticleJPEG Encoding acceleration using OpenCL in Image Magick libraries by AMD
Hi, I have been looking for a GPU accelerated version of JPEG Encoder (preferably using OpenCL) for AMD Radeon HD 6320 GPU.I understand from a video posted here (OpenCL Optimizations on ImageMagick:...
View ArticleAMD-APP-SDK-v2.9-Windows-641.exe failed to run too !
Hi, Because I have failed to use the Unified installer... I have download and run the AMD-APP-SDK-v2.9-Windows-641.exe file.I'm on Windows 8.1 64 bits... A window appear with the following command :...
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APP SDK samples can't find GPU
I have installed a Radeon R9 290 into a 64-bit Ubuntu 12.04 Linux machine and successfully installed amd-catalyst-13.11-beta-v9.4-linux-x86.x86_64 driver and AMD-APP-SDK-v2.9-lnx64. My X is working...
View Articleclinfo (and any OpenCL code) segfault with AMD CPU only machine
Hi, I am trying to run OpenCL code on a new "mini-cluster" machine (4 x AMD Opteron(tm) Processor 6380 (16 Cores)) and I obtain the following error when theclGetPlatformId() function is reached:...
View ArticleAMD APP SDK OpenCL for AMD Catalyst 13.9 (release 10.28.2013)Special HD 7790
Hi, someby can tell me if exist a AMD APP SDK OpenCL for AMD Catalyst 13.9 HD 7790 in Windows XP please? I just found a download for AMD APP SDK OpenCL version 2.4 to 2.9 but I read in the descriptif...
View ArticleHuge difference between the kernels execution time and program total...
Hi to everyone, I am facing a weird problem with an OpenCL code that I am developing. In short words, I have a certain number of kernels that are called inside a loop. The problem that I am facing is...
View ArticleImage access
I have two kernels. One of them writes (only) some image. Other - only reads it. Host has no business here. Is there any possibility to switch image access mode from read_only to write_only without...
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