Re: Why run´s this Code faster on the CPU than the GPU
Hi, thanks for your reply. Changing the dimension from long global_work_size[] = new long[]{1000};to long global_work_size[] = new long[2]; global_work_size[0] = 1800; global_work_size[1] =...
View ArticleRe: Valgrind complaining about uninitialized values coming from libamdocl64.so
Hi Jon, There is no error in the code snippet that you have posted. Do you get desired result if you run your application outside valgrind? A simple test scenario can be writing 1s on the data_buf in...
View ArticleRe: Blender Cycles(Opencl on AMD GPUS)
Well no reply from anyone?. I'm testing catalyst 14.2 beta 1.3 but segimos Same more or less than the previous version. For when some improvement, we ask that you inform if anything. Is much...
View ArticleRe: constant array packing
I meant that whatever type you need to access in the array, you should use float4 or int4 as an array element. Maybe you will use only the first float of the accessed float4, but no cmovs will issued...
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Re: how to access gpu display rect for amd graphic card as...
Hi,we have no dedicated function to retrieve the dimension of a specific display on a GPU. Anyhow you can get this information by enumerating the display devices. For each display that is mapped you...
View ArticleRe: Valgrind complaining about uninitialized values coming from libamdocl64.so
Hi Ravi, Ah, perhaps I didn't explain myself correctly. The code is working perfectly fine as far as I can tell, also under Valgrind. That is not my concern. My concern is that I am getting a ton of...
View ArticleRe: Help on building OpenCL/clAmdFft
Hi Kent, thanks so much for your reply. I will give it a try with the Nvidia SDK then. But still it is strange to me why my OpenCL/clAmdFft code is not running on the CPU only. I have seen and...
View ArticleRe: Why run´s this Code faster on the CPU than the GPU
modern GPU like radeon R9 290 have 2816 compute units. so you need at least 2816 work-items to fully utilize GPU. also GPU have higher latency to start a task compared to CPU. that mean you must have...
View ArticleRe: Help on building OpenCL/clAmdFft
Some more questions: -- Is there an installer for clFFT? If not, how do I install? do I have to build?-- Should in principal an NVIDIA OpenCL SDK together with clAmdFft work on an NVIDIA GPU?-- Should...
View ArticleRe: Help on building OpenCL/clAmdFft
-- Is there an installer for clFFT? If not, how do I install? do I have to build?No, we have not made a new package for clFFT yet. This will be coming relatively soon. For now, you have to build a...
View ArticleRe: Help on building OpenCL/clAmdFft
Thanks again. Still my question is unanswered. Why my AMD OpenCL with clAmdFft do not run on an Intel CPU ('no protocol' specified and 'Invalid Context' errors)? Any hints on how to check and trace...
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Re: Possible driver bug with glCopyImageSubdata
Just an update to what I've mentioned before. Even though glCopyImageSubDataNV doesn't generate a GL error, the behavior doesn't seem to be correct. The destination texture is showing corruption due to...
View ArticleRe: Valgrind complaining about uninitialized values coming from libamdocl64.so
Hi Jon, Check the AMD Knowledge base KB73 posting at: http://developer.amd.com/resources/documentation-articles/knowledge-base/?ID=19The information in that posting suggests that those errors are false...
View ArticleRe: Re: CodeXL debugger and R9 290x problem
Yes, certainly. Here it is: root@maket-PC:/opt/AMD/CodeXL_1.3.3487/bin# clinfoNumber of platforms: 1 Platform Profile: FULL_PROFILE Platform Version: OpenCL 1.2 AMD-APP (1411.4) Platform Name: AMD...
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Re: Re: CodeXL debugger and R9 290x problem
delifaz, I hope it will released soon Thanks
View Article2x performance decrease in OpenGL when OpenCL interop is enabled on R290x
Greetings, I have an ATI R9 280x GPU running on an Ubuntu 13.10 x86_64 system with the Gnome display manager. I have found my OpenCL/GL application runs much slower on this card than a two year old...
View ArticleGPU Driver problem!
Hi all!! I want your help i have a serious problem with my pc...I have AMD R9 290X and there is problem with drivers...Now i have installed the latest drivers 14.2 catalyst beta v1.3 but some times my...
View ArticleRe: Help on building OpenCL/clAmdFft
You should try to run the clinfo utility that is shipped with the AMD SDK. This tool will enumerate all detected OpenCL devices it can find in your system; if clinfo can see the CPU device, then the...
View ArticleRe: glTexSubImage2D crash with RGB texture in 13.12 drivers (regress from...
Still broken in 14.2 beta driver.
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