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Intel SDK unhappy with Intel OpenCL driver?
Hello, I performed these steps:1. Buy a Dell Precision M48002. Install CentOS 73.lspci | grep VGA | grep Intel 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated...
View ArticleLinux. Need to login locally first before OpenCL works using remote...
Need to login locally first before OpenCL works using remote connection (SSH or VNC)Installed CentOS 7.2 (and 7.1) on BDW processor. I did the refresh install to get rid of other factors. I also...
View ArticleUninstalling OpenCL SDK 1.5 on Windows 10 after upgrade from Windows 7
I installed OpenCL SDK 1.5 when my computer had Windows 7 Home. It is now upgraded to Windows 10 Home. When I try to install "OpenCL runtime for Intel Core and Xeon Processors" I get the error message...
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Linux Iris Kernel Launch Overhead
Hi,Again, I've been trying to characterize when it makes sense to off load computation from CPU to IGP (i7-5775c CPU vs Iris Pro IGP). I noticed that for very simple kernels (e.g. a single fma, or...
View ArticleWho is responsible for releasing cl_events
Hi,today i encountered a strange memory increase when i run my OpenCL application. In my case the issue seems to be the OpenCL cl_events.I use clEnqueueNDRangeKernel(..., &my_event); which returns...
View Articleconfusion on kernel executing timeline
Hi, I got some confusions on kernel executing timeline.I created an in-order commandqueue and 2 sets of kernels which should be executing one after another.After enqueued these kernels, I kept on...
View ArticleRelaxing SVM memory consistency in OpenCL 2.0
I am trying to find some way to relax memory consistency imposed by OpenCL 2.0 run time. To clarify my goal suppose you have the following scenario:You have an fine-grained SVM memory object that is to...
View ArticleVulkan and OpenCL 2.1
Is a new SDK on the way for these?Will you support GPU double precision in the SPIR-V OpenCL C extended instructions? I assume you will be supporting it under the GLSL 4.5 extended instructionsWell I'm...
View Articleenqueue API takes too much time
I enqueued 5 kernels for an in-order execution in my application.Noticed an unusual behaviar after timing the program.One kernel's enqueue API cost a lot more time than the others, almost as much as...
View Articlezero-copy didn't improve the copy performance
Have some confusions on the usage scenario of the zero-copy buffers.I use CL_MEM_USE_HOST_PTR flag to create an zero-copy 2dimage buffer.The host buffer is allocated at a 4096 byte boundary and the...
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cos() returns sin() values with -fast-relaxed-math
Hi,My system isOS: Windows 7 64bits CPU: i7-4720HQ iGPU: HD 4600 Graphics driver: 15.38.28.4332 and 15.36.24.64.4264 OpenCL SDK: 2016 revisionProblem: when compiled with -fast-relaxed-math, the cos()...
View Articlecompare two sql database tabular data c# or java
hello i'm searching for a fast method for transform a tabular data to an opencl buffer or texture. I use c# and i select two table. Now i can use datatable.net class or a cursor in java or c#. then...
View ArticleOpenCL Runtime 15.1 won't reinstall
Hi guys,I have the following problem with opencl_runtime_15.1_x64_setup.msi:the first time I install it everything is smooth. If I uninstall it from program and features and try to install it again I...
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OpenCL SPIR cannot load into runtime driver
Hello,My system : CPU: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz, 4 Cores / 8 ThreadsOS : Ubuntu 14.04OpenCL drivers version: 1.2.0.43 (gathered from OpenCL info queries)Intel SDK version : intel...
View ArticleWhat to install? Can't get gpu platform working
I'm having a really hard time getting opencl set up. The machine is a NUC running ubuntu 14.04. Here's what the OS reports about the hardware: lspci |grep VGA: 00:02.0 VGA compatible controller:...
View ArticleCode Builder not initialized
Hello,I just installed Intel® SDK for OpenCL* Applications 2016, and for both VS 2013 and VS 2015 I am getting this error:Code Builder not initialized.Unable to load DLL 'KernelBuilderAPI.dll': the...
View ArticleWhere can I get OpenCL SDK for RHEL6?
Hi OpenCL expert,I had to use RHEL6 for my system. I have installed the opencl_runtime_15.1. However, I cannot install intel_sdk_for_opencl_2016_6.0.0.1049_x64. It says RHEL7 is needed to support this...
View ArticleWhere can I find OpenCL driver for Cherry Trail devices?
Many BayTrail Android devices are shipped with OpenCL driver by default, but it's no longer the case for CherryTrail. So is OpenCL still supported by modern Android IA devices?It seems that Intel® SDK...
View Articlehigh cpu usage on module libigdrcl
Hi,After running some performance tests on VtuneAMP and VisiualStudio performance Analyzer, they both showed that the module libigdrcl took a lot of CPU usage.Is this module the opencl driver...
View Articleoptimize kernel for vector addition
I have 2 vectors (float) with size of 1024*1024*8. I want to do vector addition. My first kernel vec_add_1() has Gx=1024*1024*8 and Lx=0__kernel void vec_add_1(__global const float* in1, __global...
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