BSOD / hang-up for OpenCL program
Hi, I have a work-station with three 7970Ghz Tahitis on which OpenCL simulations (self-written) run. After weeks without problems for simulation #1 now for simulation # 2 (most parts are identical, but...
View ArticleWhen will Blender build be available with performance improvements?
I can't install it now, becouse ubuntu 14.04.2 uses Xorg 1.16.1, and fglrx14.301 can work only with 1.15, but I install ubuntu 14.04 and install on it fglrx 14.301. OpenCL is works, but ubuntu want's...
View ArticleclEnqueueWriteBufferRect does not work when region width is not equal to src...
I have already reported this problem in an earlier post: http://devgurus.amd.com/thread/160312 and the error has been fixed in Catalyst 13.4.However, the error seems to be reintroduced in Catalyst...
View ArticleBinary produced for Hawaii with CL_CONTEXT_OFFLINE_DEVICES_AMD is not working...
We ship our applications with a number of binaries for different GPUs. The binaries are produced by compiling source OpenCL files with clBuildProgram ("-fno-bin-source -fno-bin-llvmir -fno-bin-amdil...
View ArticleStack overflow in clBuildProgram on Catalyst 14.12 with R9 290
When I try to compile certain OpenCL code on a machine with R9 290 installed running a Catalyst 14.12 driver, the program crashes with stack overflow in amdocl64.dll when calling clBuildProgram.The...
View ArticleExact meaning of ALU latency measurements?
On section 6.6.1 of APP guide, "hiding ALU and Memory Latency" I read:The read-after-write latency for most arithmetic operations (a floating-point add, for example) is only four...
View ArticleOld AMD-APP-SDK
Hi,I'm a student and I'm looking for old amd-app-sdk because I need samples in c language (not c++);in particular I would like DCT and IDCT samples C/OpenCL.Can someone help me? Thanks
View ArticleFailure to allocate buffer bigger than 2 GB on Windows 10
I have a R9 290X with 8GB and I'm using Windows 10 Build 10041. I have installed no extra software, SDKs or drivers on this test computer. The device claims to support allocations in one chunk of close...
View Articleprintf weirdness
Adding this to my kernel will print a message: printf("foo %d", 1);But adding this to my kernel will not print anything: printf("foo"); I am using the latest catalyst release driver. Thanks.
View Articledouble-double for opencl
I'm after more precision than double. There is a couple of double-double libraries for CUDAOne from Nvidia...
View ArticleOut of order queues
I've turned on out of order queues on my project running on HD 7700.This significantly improves performance, I highly recommend it!Only caveat is that you have to manage kernel sequence yourself, 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 Articlepossible OpenCl compiler bug
Hi, I have come across a possible compiler issue which is present in the attached kernels. The two kernels differ how work is mapped to the threads. Requiring a work group size of 256; the difference...
View ArticleUnsupported device! Required CL_DEVICE_OPENCL_C_VERSION 2.0 or higher
I encounter a problem when I execute program from AMD SDK 3.0 on Ubuntu 14.04. The clinfo reports is attached. I am sure that A8-7600 is OpenCL 2.0 supported device. However, when I execute the...
View ArticleKernel with local memory usage gives different results on some hardware
Trying to speedup processing of few large arrays I used shared/local memory for splittling arrays to smaller blocks and to increase execution domain of kernel.It wroks on on my dev host (C-60 Loveland)...
View ArticlePerformance varying on a m290x in crossfire
Hi, Was wondering if AMD devs have any insights into this observation: I've observed that running my benchmarks on GPU1 runs significantly faster than GPU0. I've noticed GPU0 can be 2 and sometimes 4...
View Article__local variable inconsistency issue
Hi everyone, I'm having issues when using __local variables in the attached kernel. When run in a loop with constant input data, the output differs at semi-random locations. On a Tahiti GPU, data...
View Articlemonitoring GPU load, temperature programatically
Hi, I'm using OpenCL in computer vision applications and because of the context of unmanned vehicles, I need to monitor the GPU load and temperature. There is a way to do this with amdconfig --dc...
View ArticleCodeXL in Visual Studio 2013
I have a VS 2013 project that contains a number of opencl files, as well as a lot of host-side C++ classes to manage buildingand running kernels, and loading in data from disk. I would like to start...
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...
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