"clBuildProgram" hangs on Intel HD Graphic 3000
Hi,The OpenCL function "clBuildProgram" hangs on those specific systems (while every thing works well on other ones): Intel HD Graphic 3000 on Win 8.1 with this specific driver (9.17.10.3347) +...
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get_global_id not working
The attached simple program simply prints out the result of get_local_id(0) and get_global_id(0). The former works but the latter returns 0 every time. Here is the output:Device name: Intel(R)...
View ArticleIs driver version meant to be locale-sensitive
HiI develop a library that does autotuning of kernels in advance. I've discovered that the value of CL_DRIVER_VERSION is dependent on the current locale, which is problematic because I use the driver...
View ArticlePassing -g option is causing compiler to segfault
When I compile the following code with the -g flag to the OpenCL compiler, I get a segmentation fault.typedef struct { uint x; } S; void f(__local S *p) {} __kernel void k() { __local S s;...
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Sample kernel showing multiple driver bugs (printf-related?)
The attached code produces some very weird results, that I think must be OpenCL compiler bugs. I tried to make it smaller but it seems sensitive to small changes (it's still a pretty minimal example...
View ArticleNew Release: Intel® SDK for OpenCL* Applications 2013 R3 with unified SDK...
Dear OpenCL developers,Release 3 of the Intel® SDK for OpenCL* Applications 2013 is now available at www.intel.com/software/opencl.What’s New in 2013 R3?Unified SDK package with support for Windows* 7,...
View ArticleUsing sad instructions in OpenCL (HD graphics)
Hi,I am writing an OpenCL kernel, which computes sad(Sum of absolute differences) of a 'char' vector. I understand that HD graphics 4000(and above) has a special sad2 and sada2 instructions. How to...
View ArticleCrash when assigning two structures.
Hi !I am having quite a strange problem on the cpu ( I don't have intel gpu to try this, but works on nvidia ).I have a kernel which makes everything crash at an assignment depending on my structure.If...
View ArticleHuge difference in memory bandwidth for IVB
Hi, I used memory bandwidth benchmark in AMD APP 2.9 SDK and test the memory bandwidth in IVB HD 4000, the original benchmark only test the data type of "float" while I extend it to int, short and...
View ArticleNew release: Intel® SDK for OpenCL* Applications XE 2013 R3
Happy New Year!Intel has announced that Release 3 (R3) of the Intel® SDK for OpenCL* Applications 2013 XE now adds GOLD support for Microsoft Windows* Operating Systems on Intel® Xeon Phi™...
View ArticleOpenCL SDK did not find CPU platform
Hello!I have a problem with detection of CPU platform with Intel OpenCL SDK 2013 R3.cl_device_id devices[10];clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_ALL, 10, devices, &num_devices);returns only...
View ArticleSupport for Bay Trail Atom E3800 series?
Hi,for the OpenCL 2013 R3 SDK I noticed that there is OpenCL support for the former "Bay Trail" Atom Z3000 series of processors. I'm just wondering if this also includes support for their embedded...
View ArticleDot(*,*) does not translate to DPPS
Hi all,I'm curious why the dot(*,*) function does not translate into the DPPS instruction for float4 data types. Instead it translates into a VMULPS followed by two VHADDPS. (Compiled with Intel(R)...
View ArticleTutorial for learning OpenCL?
Hi!Is there some tutorial anywhere for learning how to use OpenCL for Intel processors, that shows and explains all the code you need, both the code for your application and the OpenCL code? I could...
View ArticleclGetProgramInfo() with CL_PROGRAM_BINARIES fails
Hello,I'm trying to run code that was working on OpenCL GPU platform on Intel MIC platform. On the host computer, there is one Intel MIC, and two Xeon CPUs. I'm trying to get program binaries for...
View Articleparallelism degree?
Dear all, I try to know the number of parallel instruction involved in a OpenCL kernel regarding the kernel parameters... For instance, with 4-core Xeon, I launch 8 workgroup of 32 threads. (1...
View Articlesupport for Microsoft visual studio 2013
Hi there,I am working on a ray tracing project that can be speed up using opencl. I use to work on visual studio 2012 where I can see opencl projects templates.But now when upgraded to to visual studio...
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clEnqueueNDRangeKernel freezes
Hello everyone!I've faced an issue relating to OpenCL implementation on Intel HD 4000 GPU (i5-3370U). When I'm building processing chain and enqueue compute kernels to cl_command_queue, runtime could...
View ArticleReduction on Intel CPU
A question from newbie.I am trying to use a reduction algorithm from NVidia SDK. It works correctly on Nvidia Discrete GPU, Intel HD Graphics 4400, but don't work on Intel CPU (Haswell i5).Reduction...
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Reduction from NVidia SDK works on HD Graphics but don't work on Intel CPU
I found that reduction algorithm from NVidia SDK works on HD Graphics 4400 but don't work on Intel CPU i5. I've expected that Nvidia algorithm works everywhere OR work only on Nvidia hardware so that...
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