FAHBench not working
This is a Folding @Home work in progress Benchmark. Not much to say about this. Tried different drivers but no luck. http://fahbench.com/
View ArticleCLBenchmark 1.1.3 Windows 8.1 driver issues
With driver 15.33.64.3214 several tests failed: https://clbenchmark.com/result-details.jsp?id=137702391623988882
View ArticleRegister Spilling
Hi, I am currently working on one OpenCL kernel with exhaustive register usage. I suspect the register spilling hinders the performance of my kernel on ivybridge. Using vtune amplifer I only get 10% EU...
View ArticleAccess to older CPU-only OpenCL runtime packages for compatibility issues
Would it be possible to provide access to the previous releases of the Intel OpenCL CPU-only runtime packages (e.g., 2012 and early 2013 versions)?The problem is that since some point in 2013, the...
View ArticleDoes OpenCL on Intel CPU device use CPU and HD graphic GPU at the same time?
Hello, I made a benchmark on my OpenCL application on i7-4771 and Xeon E5-2643 machine and the result is shocking me. E5-2643 spent much longer time to complete the test than i7-4771. I guess...
View ArticleClik here to view.
Kernel Builder "Deep Analysis" can't instrument large kernels
I have a large kernel that errors out in Kernel Builder with a: "-11 CL_BUILD_PROGRAM_FAILURE".Is there a practical size limit for Kernel Builder kernels? The kernel does build using the offline...
View ArticleAlgnment question
In one of the sample apps, there is an align_malloc method.Inside, there is this assert: assert(size/sizeof(void*)*sizeof(void*) == size);Why must the memory size be divisible by sizeof(void*)...
View Articlelocal work group size of 512 is too small for Haswell
512 items is too small for Haswell. A workgroup of 512 items cannot cover a Haswell half-slice.The minimum acceptable max work group size for Haswell should be at least 10 EUs x 7 h/w threads x 8 work...
View ArticleClik here to view.
OpenCL™ JumpStart Tutorial
1. IntroductionOpenCL™ JumpStart Kit is a plug-in for Microsoft Visual Studio* that enables developers to quickly create OpenCL projects in the Visual Studio IDE. JumpStart is a new feature in the...
View ArticleClik here to view.
OpenCL™ API Debugger Tutorial
Download PDF1. IntroductionOpenCL™ API Debugger is a Microsoft Visual Studio* plug-in that enables debugging of OpenCL applications by allowing developers to monitor and understand their OpenCL...
View Articlemul_hi bug report
Windows 8.1 64-bit, Intel HD 4600 (both latest release and beta drivers), the following snippet from an OpenCL kernel produces an incorrect result: if (k_delta == 38443432 && jj==4620)...
View ArticleGetting started with openCL on N2820
Hi, I have been doing openCL on CPU- (discrete)GPU systems from NVIDIA and AMD. Now I want to try it on Intel Architecture. I will be getting a Intel Celeron N2820 NUC Kit DN2820FYKH Mini PC soon.I...
View Article
