GCN Scheduler scheme
Hi, would anybody explain me exact scheduler working scheme for GCN ? Especially in situation, when workgroup size is smaller then 256 (128, 64). I understand, that CU can handle several small...
View Articleencapsulate context creation
Hello, I need to use the opencl context and its associated command queues across several classes and therefore i am planning to encapsulate the opencl context creation into a single class and make a...
View ArticleProblems with OpenCL since driver 13.11 beta 9.5
Hi everyone, our application uses OpenCL computations for quite some time now. For other reasons we have always used NVIDIA GPUs so far, but since their OpenCL performance got worse and worse we are in...
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использование инструкций интел
при использовании SSE1,2,3,4, и другихинструкций интел происходит замедлениеисполнения нужно использовать дешифраторинструкций с заменой на свои для AMD Use instructions intel using SSE1, 2,3,4, and...
View ArticleOverlapping computation and memory transfers with OpenACC and the CAPS compiler
Hi, I am currently working on overlapping my memory transfers (each transfer about 1 GB in size) with computation. However, even when I use async memory transfers in OpenACC the profiler shows me that...
View Article"CPU#1 stuck for 23s" Error,when using multiple GPUs
hello, I'm currently setting up a linux system with 3 radeons (1x radeon6950, 1x radeon5870, 1x radeon5850). I'm using a fresh installed ubuntu 13.04 (as recommended on amd's beta driver page) and the...
View ArticleLegacy ATI Stream downloads
Hello,I've noticed, that recently ATI Stream SDK 1.4.0 beta download link was removed from AMD website. Is there a possibility for AMD to keep the downloads of older products, like ATI Stream 1.4, 2.0,...
View ArticleclGetPlatformIDs block?
hiHas anyone come across the clGetPlatformIDs interface blocking problem? When i use clGetPlatformIDs api, it did not return. The call stack info as follows. Anybody know why clGetPlatformIDs is...
View Articleafter installing the catalyst 13.12 my laptop is very slow
Dear AMD experts. Hardware configuration: product name: "HP envy 6-1002tx notebook pc" intel core i5/3rd Gen Core processor...
View ArticleOpenCL problems on radeon 6670
Hello, i recently purchased an xfx radeon 6670 to mine scrypt coins with. I use gui miner to mine and it uses OpenCL. For some reason i cannot get it to work at all. Is there a variable i have to change?
View Articledualgpu2use4opencl
For 64-bit scientific linux 6.5 workstation with ASUS M4A79 Deluxe 790 FX motherboard and 850W PSU the following GPU-cards are available at the moment: running:1) NVIDIA Quadro 1800 fx <-- one...
View ArticleConcurrent OpenCL-kernel execution and Windows/Linux driver differences...
Hi, I've written an OpenCL application which runs much faster in Linux if one calls kernels concurrently on R9 290(X) devices because only one of the three kernels has high register usage. The...
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OpenCL console mode -> screen flickering
Hi. I have some issues running an OpenCL program from the Linux console. I already learned from [1] that the program needs to have root privileges and the X window system needs to be stopped.But...
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 ArticleLinux 290x OpenCL ?
Hello, I am trying to get 290x to be visible under Ubuntu 12.04 with latest 13.11 beta6 64bit Linux drivers. It looks like fglrx module is loaded and aticonfig is functioning # aticonfig --adapter=0...
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Radeon HD 7950 + Linux + OpenCL = ksoftirqd spam
I've been having this problem with a lot of OpenCL projects for a couple of months now. I've just upgraded to Ubuntu 13.10 and installed Catalyst 13.8 as well as the latest AMD APP SDK and it is still...
View Articlepossible bug found: *single* threaded race condition with clSetKernelArg +...
First of all let me say a *BIG* thanks for finally adding support for the OpenCL 1.2 Direct3D9 interop extension. I've been waiting for this for years! And it seems to work just fine. Finally I can use...
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vram consumed during opencl execution
Hello, this is probably easy to do, but I was unable to find an answer on the forums:I would simply like to be able to query my card/driver from the command linewhile a code is running, regarding main...
View ArticleMy ATI GPU is not listed in OpenCL SDK system requirements?
Hi,I have recently come across OpenCL and as such am very much interested in using GPGPU for my application.I checked this page which does not list my GPU: ATI Radeon HD 7670M.So does this mean I...
View ArticlePrivate memory corruption?
Hi. I'm using version 13.9 of Catalyst drivers on Linux.I've got an OpenCL program that was tested on an Nvidia GPU and works quite well, but it behaves strangely when I'm trying to run it on Radeon HD...
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