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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...

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When 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...

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clEnqueueWriteBufferRect 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...

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Binary 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...

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Stack 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...

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Exact 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...

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Old 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

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Failure 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...

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printf 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.

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double-double for opencl

I'm after more precision than double. There is a couple of double-double libraries for CUDAOne from Nvidia...

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Out 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...

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clReleaseCommandQueue 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...

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possible 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...

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Unsupported 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...

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Kernel 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)...

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Performance 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...

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__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...

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monitoring 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...

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CodeXL 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...

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OpenCL 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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