C-60 APU Loveland. What wavefront size in reality?
There are discrepance still between what CodeXL thinks about Loveland and what clInfo reports: CodeXL: Wavefront size: 64clInfo under 14.12 Omega drivers: Kernel Preferred work group size multiple:...
View ArticleWhy does not my Hawaii support OpenCL 2.0 with driver 1642.5
In my Radeon R9 290 (Hawaii), CL_DEVICE_VERSION is "OpenCL 1.2 AMD-APP (1642.5)".CL_PLATFORM_VERSION is OpenCL 2.0 AMD-APP (1642.5). Why is not CL_DEVICE_VERSION "OpenCL 2.0"?Did I forget some special...
View ArticleVS 2013 and openCL
Hello everyone!I just started to learn opencl and having a big problem!Tried to start with a simple print "Hello, world" ... and a lot of errors when linking.First, there was a problem with cl ::...
View ArticleLacking support for OpenCL 1.2 C++ bindings version 1.2.7
I have only used OpenCL for a small amount of time, but as I was reading through the spec provided on khronos.org https://www.khronos.org/registry/cl/specs/opencl-cplusplus-1.2.pdf, I realized that the...
View ArticleOpenCL in Windows Server 2012 Hyper-V
OK, since I was unable to find a web host which supported OpenCL (separate thread) I went ahead and set up an Azure VM. Looking at control panel I see it is running on an older Opteron cpu. However,...
View ArticleBest way of compacting one buffer into a second
I am performing image compression. The image I is broken up into K code blocks {Bi}. Each block has fixed size MxN pixels. Each block is independently compressed. All compressed blocks {Ci}, with...
View ArticleCan't get any opencl 2.0 samples run from the latest 3.0 SDK.
The GPU is a R9 270X with the just released driver (14.501.1003-141120a-178000C, 14.12) on Windows 8.1.When I run the SDK samples:Platform 0 : Advanced Micro Devices, Inc.Platform 1 : Intel(R)...
View Articledevice-side enqueue & local memory
I'm trying to use local memory inside a device-side enqueued kernel. My assumption that any locally-declared array is visible across all work items in the work group.This is proven to be true when I...
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 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 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...
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JPEG decoding is broken with Catalyst driver
I just confirmed that installing Catalyst driver (Omega as well as older versions) breaks Windows Photo Viewer. Uninstalling the driver completely using amdcleanuputility.exe restores the Windows Photo...
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_...
View ArticleNo GPU platform with 464L APU (R-Series) and SDK 3.0
Hi, I am no OCL developer, but a user.Trying to get x264 to work with OCL on Linux. The system in question is a 464L APU (R-series). I installed the 64Bit SDK 3.0 beta. When I try "clinfo" it only...
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...
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What is the Size of GPU L2 cache for A10-7850k APU?
Hello, I read the slice "Introduction to Kaveri" and find that there is a L2 cache on GPU. It seems shared by all the 8 GPU cores. I wonder what size is...
View ArticleOpenCL on 14.12 Omega driver crack's OpenCL on linux
Hi, I have a amd kabini laptop, it's on AMD A6-5200, there is Radeon HD8400 and Radeon HD8570,Some time ago I can use opencl on my laptop for rendering in blender or using handbrake, libroffice, it can...
View ArticleMapping device memory
Hello all, While working on my problem, I came across an interesting phenomenon which I'm trying to understand. Basically I create a pinned memory and do data tI ransfer between device and host using...
View ArticleclReleaseCommandQueue at program exit never returns
When my program finishes, I try to release all command queues. But clReleaseCommandQueue hangs.This is on windows 7, latest release Catalyst driver, and HD 7700 card. What is the best way of...
View ArticleC-60 APU Loveland. What wavefront size in reality?
There are discrepance still between what CodeXL thinks about Loveland and what clInfo reports: CodeXL: Wavefront size: 64clInfo under 14.12 Omega drivers: Kernel Preferred work group size multiple:...
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