Opencl math question New to opencl trying to convert octave to opencl getting...
I just need a little help converting these lines of octave to opencl i guess i'm confused on the translation ^ to pow her is octave/opencl code but the results are not the same v1=0.3;...
View ArticleOpenCL Linpack
Hello, I was looking at this article:http://developer.amd.com/community/blog/2013/12/17/students_win_sc13_commodity_cluster_challenge_with_amd_apu/ I was wondering from where one can obtain the linpack...
View ArticleGet peak performance at Radeon 5870
Hi guys, I am new in this forum und I have to admit that I am not a very experienced programmer in terms of gpu programming. Nonetheless I want to write some code to achieve peak performance (tflop/s)...
View ArticleApplication crash, Unhandled exception
Hi, I have written following program to find out SAD value (sum of absolute difference) in a given frame. My kernel code is here......The kernel works fine if the Frame_width=100 , Frame_height = 100,...
View ArticleHuge difference between the kernels execution time and program total...
Hi to everyone, I am facing a weird problem with an OpenCL code that I am developing. In short words, I have a certain number of kernels that are called inside a loop. The problem that I am facing is...
View Articlebarrier functions makes wrong operation.
After first uploading my question, I tested more about this issue. "aftrer using barrier function the value in memory, which is qualified as __local, is changed."My Processor is Intel i-5-2410M @2.3GHz...
View ArticleLLVM error when compiling kernel
I am getting this error message:LLVM ERROR: Cannot select: 0xb1e670: i8 = setcc 0xa94230, 0xf72f00, 0xae22a0 [ID=25] 0xa94230: i32 = AMDILISD::ADD 0xf72f00, 0xf6f7d0 [ID=22] 0xf72f00: i32 = mul...
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Suggest Feature you want in AMD APP
Suggest Feature you want in AMD APPHi EveryBody,I was preparing a top feature requests for the AMD's openCL implementation. I will be looking to as many old forum topics as i can. But there can always...
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LibreOffice 4.2 with OpenCL
Just turned on OpenCL in LibreOffice 4.2 on Linux with 14.1 drivers: Problem is that I get 0's when using the GPU (Auto-select off to choose the device). On the CPU the results are correct. What could...
View ArticleLaunch OpenCL Application in WindowsXP
Hello! I write program which do all calculations in OpenCL.But in all last catalyst drivers OpenCL support is not presented for windows XP.How i can be sure that my program work on windows xp machines...
View ArticleWhy run´s this Code faster on the CPU than the GPU
Hello to everyone, I am currently trying to get familiar with jocl, and learn the basics. For that I tried a basic Sample, in which I fill a array representing an Image with shades of blue.So that...
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 Articleconstant array packing
Hello!In my kernel I am using constant array of bytes:__constant uchar myconst[256] = { 0x5a, 0xe6, 0x61, 0xf4, 0x31, 0xe3, 0x85 ....................skipped values here...............};But when I...
View Articleread_imagef with image2d_array_t not working properly
Hello,I've noticed a bug with the read_imagef function (and possibly other overloads) when operating on 2D image arrays when using floating-point coordinates. The third coordinate, which represents the...
View ArticleValgrind complaining about uninitialized values coming from libamdocl64.so
I'm building an application using OpenCL, and while running Valgrind I am seeing a bunch of warnings about various problems inside libamdocl64. I'm not so worried about them as I see many other people...
View ArticleAPP SDK v2.9 su R9-M290X
Ciao a tutti,scrivo qui perchè in procinto di acquistare un notebook dotato della scheda grafica R9-M290X. Ho visto che è stato rilasciato APP SDK v2.9 e mi chiedevo se è possibile utilizzare questa...
View ArticleProblem with bit operations with openCL
Hi, I did some tests on an HD7970 card recently, simply running the md5 hash function in openCL on it. But I found that the result is wrong (the same code runs fine on an NVIDIA card).It became correct...
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...
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Installing issue of OpenCL on AMD R9 290X in Linux
Hi All, I have just got an ASUS AMD R9 290X board and I am planing to do some OpenCL projects. After I plug in the board to my CentOS 6.5 machine, without driver, it shows PCIe Gen3 x16 connection...
View ArticleApplication crash, Unhandled exception
Hi, I have written following program to find out SAD value (sum of absolute difference) in a given frame. My kernel code is here......The kernel works fine if the Frame_width=100 , Frame_height = 100,...
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