Potential Conflict with NVidia Driver 320.
Not sure why it is happening but today when I tried to use OpenCL on my HD4000, I kept getting a crash (Either with my app or GPU Caps Viewer OpenCL benchmarks).I have a GTX580 in my system but for the...
View ArticleINFO: OpenCL/OpenGL Interop when another GPU is present.
Hi guys,After a lot of search I have been able to get the OpenCL/OpenGL Interop working with the HD4000 WITHOUT deactivating my NVidia card.The pain is caused by the fact that Microsoft doesn't want to...
View ArticleOpenCL SDK 1.2 for Linux, without Xeon?
Hi,I'm excited about doing OpenCl development on my Intel based machine, but I'm wondering if I can use the 1.2 SDK with Linux? Ā I have aĀ Intel Core i7-3740QM CPU with an integrated 4000 HD GPU. Ā I've...
View Articleopencl cpu fallback
We use opencl for internel use for encoding tasks and for cases where the local GPU+driverĀ doesn't offer an OpenCL device we would like to always be able to fall back on a cpu opencl device.However,...
View ArticleFP64 support on GPU of 4th Gen Core (Haswell)
Now that the Haswell NDA has been lifted, I wanted to know1. Do any of the GPUs (Iris Pro 5200, Iris 5100, HD 5000, HD 4600) support cl_khr_fp64 (or perhaps some custom fp64 extension) in OpenCL?2. If...
View ArticleOpenCL KernelBuilder 2013 crashes in processor graphics (HD4000)
Hi guys,I tried compile my own opencl kernel but KernelBuilder (32bit and 64bit too) says this log:fc1 build 1 succeded.fc1 build 2 succeeded.Error: Internal Error.And when the compiling is in-progress...
View ArticleAMD's GPU_MAX_ALLOC_PERCENT equivalent in Intel OpenCL SDK?
Hi,I just installed the opencl-1.2-3.0.67279 XE version and it seems that the largest object I can allocate is 4GB. However, my Core i7 3770K machine has 16GB.CL_DEVICE_GLOBAL_MEM_SIZE:...
View ArticleOpenCL kernel Buider: Error occured, IOC engine crashed
Hi Intel OpenCL Developmen Team,I've strange crash in OpenCL kernel Buider.1. Installed the latest 64-bit OpenCL 2013 SDK.2. Open Application Kernel Builder version 3.0.0.1 32 bit or 64 bit.3. Type...
View ArticleXeon Phi, Opencl and clbenchmark
http://clbenchmark.com/device-info.jsp?config=15887974*Cough*...Not so impressive, but I'm guessing its beta version problem...(?) Anyway something looks broken.If you go to the results page...
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Possible bug with atomic_cmpxchg?
I wrote an OpenCL code to multiply a row vector into a Compressed Sparse Row matrix. But it gives me a different answer eachtime I run it.I have built a small repro case based on my matrcies. As one...
View ArticleDo work items in the same work group execute the same instructions?
For Intel CPU and HD Graphics, do work items in the same work group execute the same instructions? If so, that means all the processing unit within the same compute unit share the same PC, but what...
View ArticleC++AMP status
Hi!I would like to ask what the current status of the Shevlin Park prototype is? There hasn't been much news about it lately. Is it still under development? When can we expect a beta release? Will it...
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Miscompiled control flow
Hi there,I've attached a test case (a gutted version of a segmented scan) that gets miscompiled by intel_sdk_for_ocl_applications_2013_xe_runtime_3.0.67279_x64, at least when running on my...
View ArticleAVX2 and FMA3 support
The FAQ states "Yes, Intel OpenCL* SDK 2013 introduces performance improvements that include full code generation on the Intel Advanced Vector Extensions (Intel AVX and Intel AVX2)."I'm trying to get...
View ArticleOpenCL memory model mapping to Intel CPU device and HD Graphics 4000
Anyone could introduce how the opencl memory model is mapping to Intel CPU device and HD Graphics?Global Memory:Global/Constant Memory/Data Cache:Local Memory: this should be SLM (part of L3 cache) in...
View ArticleProcessing Elements in Intel CPU and HD Graphics
In OpenCL platform model, there are terms like OpenCL Device, Compute Unit and Processing Element. For CPU the a Compute Unit is a CPU Hyper Thread and for HD Graphics Compute Unit is mapping to...
View ArticleImage2D not working correctly on GPU
Hi,I encountered that strange behavior on geforce gt540m (openCL 1.1). I am using c++ api and everything is working correctly on i3 2310m (also tried on i7 and Nvidia Quadro 4000m). But when I want to...
View ArticleRegarding OpenCL ICD
I am using Intel sdk intel_sdk_for_ocl_applications_2013_xe_sdk_3.0.67279_x64 .The Intel OpenCL ICD loader is searching /etc/OpenCL/vendors directory for intel64.icd file.I wants to override this...
View ArticleRegarding OpenCL ICD
I am using Intel sdk intel_sdk_for_ocl_applications_2013_xe_sdk_3.0.67279_x64 .The Intel OpenCL ICD loader is searching /etc/OpenCL/vendors directory for intel64.icd file.I wants to override this...
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Compiler segfault passing scalar argument to select()
I have no idea if this forum is the best place to submit bug reports. If I should file this somewhere else, let me know.Description of the bugCompiling select(v, 0, s) -- with v and s previously...
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