OpenCL Compiler Crashes
I have a kernel which works fine on HD 6xxx and earlier GPUs with Catalyst 12.10 or earlier drivers under Windows 7 x64. The app is built with AMD APP SDK 2.8. When attempting to run the app on HD...
View ArticleVideo Card for Linux
I am using Ubuntu 12.04, and I recently tried OpenCL and PyOpenCL on GTX 680, HD 7790 and HD 7870 XT. The Nvidia linux driver for GTX 680 works, but slowly (cannot run at full clock). The AMD driver...
View Articlecommand queue properties
Hi forum, There are 2 command queue properties. Is it possible to have both of them in the same command queue command. If yes, then how ? RegardsSajjadul
View ArticleMax Read Bandwidth of Trinity APU
Hi, I have got a bandwidth question. I got an A10-5800k Trinity APU and I use OpenCL with the integrated GPU Radeon HD 7660D.Also, I use the Asus F2 A85-M Pro motherboard and 4x 8GB 1866 MHz ram. OS is...
View ArticleHow to fill H264_picture_parameter_2 structure
Hi all, I'm trying to implement an H264 decoder using opencl 1.2 and I'm currently studying the OVDecodeRender sample project. SideNote: I have been trying to compile the OVDecodeRender.zip sample, but...
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Large delay in OpenCl Queue
I am using OpenCL to perform some real time data processing. Each iteration, I copy the new data to the GPU, queue a series of kernels, and copy the results back to the CPU when the kernels are...
View ArticleInformation about AMD Radeon 6970HD GPU
HiI have AMD Radeon HD 6970 GPU. It's have 2GB GDDR5 Memory. When i am trying to pass array of 200000000 (i.e 200 million) integer array to OpenCL Kernel it gives me wrong result. If we count...
View ArticleWhy GCN architecture is better than VLIW4?
I understand that may be dependance between many wavefronts. But, while GCN can switch wavefronts dynamically between SIMDS, I don't understand why VLIW4 can't do this. In case this does not happen...
View ArticleOpenCL under Linux is slow unless I use CL_QUEUE_PROFILING_ENABLE
Hello, I'm getting severely slowed down performance under Linux (Ubuntu 12.04 64bit) with HD 7790 Catalyst Performance Driver. It ran fine under Windows on the same GPU (about 4 to 8 times faster)....
View Articlecommand and device count
Hi forum, Is there any rule of thumb about the number of command queues for each gpu device ? Is that the standard that each device have only command queue ? Can it be more , and in which context ?...
View ArticleWhy does OpenCL on Linux need X?
Hi, I was wondering why my GPU (Radeon HD 7790) isn't recognized as computedevice without X running on Linux? Sure, I can make it work, I can makethe X session fairly minimal (in terms of memory and...
View ArticleApple's FFT on AMD cards with C++ OpenCL API
Hi, I'm trying to run Apple's clFFT on AMD cards using the OpenCL C++ API, tocreate the platform, context and devices, queues. It seems that it works onlyfor the C API, but not for the C++. On Nvidia...
View ArticleWhat's wrong with this file?
THIS CODE IS FROM A PROGRAM CALLED BLENDER CYCLES...IT WORKS...BUT DOESN'T WORK WITH THE AMD OPENCL COMPILER,...IN THE BLENDER COMMUNITY SOME BELIEVE THAT THIS CODE IS PROGRAMMED USING CUDA SYNTAX,...
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Concurrent kernel execution between CPU and GPU
Hi. I am trying to verify simple heterogenous computing using a CPU and a GPU using OpenCL. The Kernel function is a simple BLAS level 1 saxpy (single-precision, scalar multplication and vector...
View ArticleAsynchronous DMA + Kernel Execution using AMD GPUs
Hi all,We have recently worked on this code to showcase, asynchronous DMA + Kernel Execution on AMD GPUs. Please go through it, give feedback. We hope it helps a lot developers and students to achieve...
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Large delay in OpenCl Queue
I am using OpenCL to perform some real time data processing. Each iteration, I copy the new data to the GPU, queue a series of kernels, and copy the results back to the CPU when the kernels are...
View ArticleHow to implement cl_khr_icd?
Hi, I want to run my application on both intel CPU and nvidia GPU. As I read some other posts, I clearly understood that I need 2 SDK for this configuration so I chose : AMD SDK and NVIDIA SDK. A part...
View ArticleBATTLEFIELD 3 Performance on 7950 vs 6870
OK...why in the world did I buy the second best Card that Amd had out when I had the 6870 and it ran battlefield better then this 7950..What are you guys thinking???? I got way better stable FPS on...
View ArticleCatalyst 13.4 Generates Incorrect Kernel Results
After upgrading to Catalyst 13.4, my kernel is now producing incorrect results. With Catalyst 12.10 and 13.1, everything worked. It's failing on a fairly simple function: uint F(uint x, uint y, uint...
View Article13.4 vs 13.3 beta
Hi there, I have a (relatively complicated) kernel (the "sort" test in PyOpenCL) that's misbehaving with the 13.4 ICD, but working fine on the 13.3 beta ICD, both from this page:...
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