exclusive write after read memory access
for a memory location that is accessed by a single thread, is it allowed to do: old = load_buffer(global_addr);store_buffer(new, global_addr); // will be executed before the memory load is finished and...
View ArticleS10000P?
I have seen on several forums that AMD has announced the S10000 dual-Tahiti FirePro card aimed at workstations. I wanted to ask whether there are plans for passive cooled (S10000P) variant of this...
View ArticleWhich sdk support Radeon HD 6650m
My notebook : lenovo g770os : windows 7 64bitscompiler : mingw4.6.1graphics card : Radeon HD 6650m I downloaded SDK2.8, install it and run a simple program, it can compile but crash when I run it. the...
View ArticleLDS access patterns
Hi, I have a question about best practices for local memory accesses. Section 6.2 of the AMD OpenCL programming guide (v2.4), on page 6-17 reads: "A simple sequential address pattern, where each...
View Articlememory aliasing and use of mem_fence
Hello, All I have a bit of a specific question related to how compiler may rearrange my OpenCL source code and side effect of this. In my kernel, I am allocating some local memory and define 2 pointers...
View ArticleAMD as gaming/developing platform
Hi! I have been looking for a decent daming/developing platform based on AMD HW, and although there is virtually no choice on the market, the MSI GX60 seemed like a perfect example of high-end AMD...
View ArticleValgrind reported memory leak when running OpenCL sample.
Hi,Some definite memory leak errors were reported when using the Valgrind to check my OpenCL application . Then I tried the sample CplusplusWrapper in APP SDK 2.8 which got the same problem. The error...
View Articlerow_pitch error with CL_MEM_USE_HOST_PTR
I'm using an AMD Radeon HD 7970 (just installed and updated) on Windows 7-64, AMD Catalyst 12.11. In clCreateImage2D, when using CL_MEM_USE_HOST_PTR, all but one of the implementations I've tried...
View Articleis there any opencl based image processing library?
I need an opencl based image processing library which can resize images, build pyramids and do covolutions. Thanks for your help.
View ArticleForcing uncached memory read.
Hello, It seems that VLIW4/VLIW5 (don't know about GCN) architecture can do uncached UAV reads, but OpenCL doesn't expose that kind of functionality. There is one way to do it right now with this code:...
View ArticleDoes AMD driver support xen kernel?
Hi, My environment is CentOS 6.2 (x86_64) with xen kernel 4.1.2, and GPU card is AMD Radeon HD 6930, i want to use OpenCL in Dom0. But when i install GPU driver in Dom0, the driver seems not to...
View ArticleAMD Radeon HD7610M support
HiI didn't found on http://www.khronos.org/conformance/adopters/conformant-products#opencl support for Radeon 7610M.Is this graphic card suitable for gpu programming? Thank you!
View Articlememory aliasing and use of mem_fence
Hello, All I have a bit of a specific question related to how compiler may rearrange my OpenCL source code and side effect of this. In my kernel, I am allocating some local memory and define 2 pointers...
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Tiled Convolution sample
Hi, I read the http://developer.amd.com/resources/documentation-articles/articles-whitepapers/tiled-convolution-fast-image-filtering/ but can't download the sample, seems like the TiledConvolution.zip...
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 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,...
View ArticleTexture reads return garbage for CLImage2D [with minimal example]
Hello everyone, first I should say that this is a cross-post from http://www.khronos.org/message_boards/viewtopic.php?f=56&t=5456Since I didn't get an answer after two weeks I figured I could post...
View ArticleDoes OpenCl1.2 Supports double precision floating point?
Hi , Can anyone explain whether opencl1.2 supports double precision? I understand that this is optional for 1.2 . If so how to enable the support? Thanks
View ArticleUbuntu package with ATI Stream SDK
i create deb package with ATi OpenCL libs. you can download it hereamd-app 2.5 i386 and amd64 need to run OpenCL aplicationamd-app-dev 2.5 both header files hope you enjoy. pls post...
View Articleincorect result on GPU
i have problem that on CPU it gives right results. but if run my code on GPU it return random results.i pinpoint that problem is in this function. event_vector array did not contain proper values.you...
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