intermittent hang
Hi,I am working on an Intel Mini PC NUC6i55YK with a Sky Lake chip set and I'm getting an intermittent hang in a very complicated piece of kernel code. What is the best way to determine where the code...
View ArticleWork Items Do Not Set Output on HD5500 GPU
I'm having a problem with a few of my kernels on an i3-5010U CPU when running on the GPU device. When I specify an X offset of 2 or greater when queuing a kernel, every 16th row does not get...
View Articleabout the performance of Intel OpenCL SDK
Hi, I tested the performance between Intel OpenCL SDK and avx with multithread. I think the OpenCL sdk also using avx and multithread in the opencl driver. So the performance maybe almost...
View ArticleIntel® Xeon® Processor E3-1275 v5
Hi, I currently have a Xeon E3-1275 v5. I was trying to figure out 1) Is the iGPU on here supported via the latest OpenCL 2.0 (I only see up to v4 mentioned in the release notes) and 2) can I use it...
View ArticleBest tools for analyzing and profiling Intel Processor Graphics OpenCL kernels?
I want to deeply profile and analyze my Intel Graphics OpenCL kernels and am not entirely clear on which tools are available and their advantages.I assume VTune is the very best? What specifically...
View ArticleA macro for neatly error-checking OpenCL API functions.
Here are some macros that I use to error check my OpenCL API functions: https://gist.github.com/allanmac/9328bb2d6a99b86883195f8f78fd1b93The two macros of interest are: #define cl(...)...
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GEN instruction explanation?
I'm storing 8x64-bit quad-words (SIMD8) to SLM and am trying to understand some curious GEN sequences.The OpenCL line of code in question is a store to a doubly indexed array in...
View ArticleXeon E3-1245 v5 Windows 7
Hi,We are trying to use the Intel OpenCL compute capabilities of the HD P530 GPU on the Xeon E3-1245 v5. Although we were successful in getting the P530 to work under CentOS 7.2 (using the patched...
View Articleproblem with read_imagef
hello,I am new with OpenCLIam using it with jOCL in java platformMy problem is that I want to read an image pixels using read_imagef, and all the results of it returns 0.0 (.x .y .z .w) knowing that...
View ArticleIntall error 1603
When I intalling intel opencl SDK, this error occured.Error message: An install package for the product Intel(R) Debugger for Heterogeneous Compute cannot be found. Try the installation again using a...
View ArticleOpenCL 2.0 @ Core i5 4300M
Dears,I'd like to have OpenCL 2.0 driver at my Dell Latitude E6440 with Intel Core i5 4300M CPU and HD Graphics 4600.Is it OpenCL 2.0 driver available?Thank you. Zone: Windows*Thread Topic: Question
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Entry Point Not Found
Hi So I was trying to do this code from link : https://www.fixstars.com/en/opencl/book/OpenCLProgrammingBook/first-opencl-program/ and I encounter some problemOutput log 'TrainOpenCL.exe' (Win32):...
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Scheduling of EU hardware threads to a subslice is "fair"
I was curious to see how a local work group was distributed across a subslice.My assumption was that a cooperative group of SIMDxx hardware threads would be assigned to the least occupied EU.That seems...
View ArticleGPU and CPU floating point equivalence
We have an algorithm that has been running floating point on CPUs for years, creating images. We're moving the algorithm onto GPU, but the client strongly insists that the output must be identical...
View ArticleIntel® SDK for OpenCL™ Applications 2016 R2 for Linux Released with GPU...
Hello,I am happy to announce the availability of Intel® SDK for OpenCL™ Applications 2016 R2 for Linux*. Please visit https://software.intel.com/en-us/intel-opencl to download the version for your...
View ArticleOclCpuDebugging2.dll Exception when trying to hit breakpoint in OpenCL code
I've tried to follow all the instructions for setting up Code-Builder to debug our OpenCL code in Visual Studio 2015 in x64 Windows (we currently debug our Linux code using the Ubuntu IDEs we use...
View ArticleVisual studio 2012 OpenCL kernel debugging
Windows 7, x64Intel Core i5 760VS 2012, OpenCL Code Builder 6.1.0. Command line: -p 3I can debug only once in VS. Debugging in next sessoins it doesnt come into kernel breakpoint until I restart...
View ArticleMultiple host threads with single queue and device
Hi,I'm developing an application program using OopenCL.The application program issues multiple threads for parallel processing and each thread needs to access a GPU through OpenCL APIs.I've tested the...
View ArticleNew OpenCL™ Runtime 16.1.1 for Intel® Core™ and Intel® Xeon® Processors
Announcing the release of OpenCL™ Runtime 16.1.1 for Intel® Core™ and Intel® Xeon® Processors:16.1.1 release update includes:Fix for the known incompatibility issue with the CPU Kernel Debugger from...
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Passing structs by value on an Intel GPU does not load struct members properly
Hi, it looks like there is a bug in the Intel GPU OpenCL device: when passing struct instances to a kernel by value (instead of a buffer object), enqueuing the kernel (using clEnqueueNDRangeKernel)...
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