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Re: can CPU run kernel?
On Kaveri, coherent shared memory access by an HSA device (eg GPU) is slower than the non-coherent accesses normally used for graphics. On Carrizo the performance of coherent and non-coherent memory...
View Articlecache on Kaveri
Hello, I have some questions about the cache on Kaveri. 1. The L2 cache size of CPU on Kaveri is 2 x 2MB, but when I use the command clinfo, I get those information:Device Type: CL_DEVICE_TYPE_CPUCache...
View ArticleCPU device openCL c version issue
hi all, I installed the latest AMD driver to support OpenCL 2.0. The samples work fine. However, when I check the clinfo, I found that my CPU device OpenCL C version is 1.2, while OpenCL 2.0...
View ArticleRe: Best way of compacting one buffer into a second
See here opencl - Fast algorithm for compacting a buffer - Stack Overflowfor further discussion, and (my own) answer.
View ArticleFAQ: AMD Developer Forums
Welcome to the AMD Developer Central Forums where developers can ask and answer questions. If you are new to our forums, here are a few discussion threads & links that may help you get started or...
View ArticleRe: CPU device openCL c version issue
Currently, AMD CPUs do not support OpenCL 2.0, so they are not listed as OpenCL 2.0 supported devices in the clinfo output.
View ArticleMipmap levels >0 for Sparse a texture 2d array are always black?
I have been learning the most recent OpenGL techniques by making a Quake 2 Renderer. I am having an issue using a sparse texture 2d array. I have the code up on github here: discoloda/Quake-2 · GitHub...
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Re: No video recorded with screenCapture example
Hi, I've just tried the sample and am getting the same experience. There is no error, a file is created but when I open with VLC nothing shows...I have a Radeon 7800 series with up to date Catalyst...
View ArticleRe: Driver Problemas -pantalla negra
Unfortunately that is not the kind of problem addressed on this forum. If you have a driver compatibility or hardware issue, please head over to support.amd.com or the visit the AMD Support &...
View ArticleRe: JPEG decoding is broken with Catalyst driver
It should just work. The installer includes the files, so new files should appear with the correct names. You will end up with "orphan" files, the ones you renamed. Since the name is changed, the...
View ArticleRe: MediaSDK 1.1 Installation problems
Hi Manish, This solved my problem. Thank you very much!
View ArticleRe: HSA/huma under Linux
AMD's 2.0 implementation of OpenCL exposes SVM (shared virtual memory), which is what you are talking about. On certain platforms AMD's OpenCL implementation has adopted HSA technologies to facilitate...
View ArticleAbsence of read coalescing
Hello, I am doing double precision floating point computations on a 280X. According to the AMD ProgrammingGuide, the SI chips do not do 64 bit read coalescing and I am getting very low vector and...
View ArticlePinned memory makes driver very happy
This is odd; I have a few relatively small intermediate buffers that I used to create on the device only. I will now be needing to process these buffers on the host, so I tried creating them with...
View ArticleRe: Mantle Headers
It seems likely they cant release the headers because they contain information that they cannot legally released. Probably related to DX12 or Vulkan.
View ArticleRe: No GPU platform with 464L APU (R-Series) and SDK 3.0
Well, I was mistaken. Catalyst 14.12 was not working. The generic drivers were used. The distro is Linux Mint 17 I was using kernel 3.16.0.33-lowlatency at first, I tried some low latency kernels and...
View ArticleContexts and sub-devices
I've been playing around with the clCreateSubDevices feature of OpenCL 1.2 and I've found and interesting difference between implementations. With AMD, if you create a context with a device and _then_...
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Re: OpenCL on 14.12 Omega driver crack's OpenCL on linux
As you mentioned, at some earlier time, you were able to use opencl for those applications. What was the catalyst driver version? Is that driver still working fine for your system?
View ArticleCodeXL problem: [xcb] Unknown sequence number while processing reply
Hello, I use CodeXL to analyze Rodinia Benchmark Suite. I find that CodeXL can analyze most of the programs, but some programs will get corruption. I do not know why. This is my running bash script:...
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