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HSA + flags for clEnqueueMapBuffer
With Kaveri out, we now have HSA in our hands. Great, but what flags do I need to use for clEnqueueMapBuffer to avoid data-copying? I have my guesses, but I'd like to hear from you. For the normal...
View ArticleCan anyone improve on my OpenCL Kernel performance ?
Am a relative newbie at GPU programming so I may be making a serious error here.Am running on an HD6850 an AMD 8150 8 core CPU at 3.6mhz.I include a stripped down kernel.It works in that the GPU kernel...
View ArticleAMD App SDK and ATI Mobility Radeon HD 5450
I've downloaded the latest version (2.9) of the AMD App SDK with the intent of developing and running OpenCL based programs on my laptop's GPU. This laptop is a Dell Inspiron 1564, with Windows 7 x64...
View ArticleOpenCL WEBP
Webp is a image format. It is used in mobile devices. Does anyone know if there are any OpenCL libraries?
View ArticleclAmdFft.runtime linking errors in Windows 8.1
Howdy, I'm writing a Java JNI wrapper for the AMD FFT library and have run into a problem under Windows 8.1 that doesn't show up in Windows 7. The code works perfectly under Windows 7, but when I try...
View ArticleBlender Cycles(Opencl on AMD GPUS)
Dear Opencl DeveloperWhy doesn't the AMD opencl compiler work with blender cycles?whenever i compile the blender cycles kernel, the system either crashes due to lack of memory, or takes too long to...
View ArticleHow bad is AMD OpenCL compiler?
this is getting ridiculous. AMD management should fire whole OpenCL team and close down whole GPGPU department. Or throw existing compiler out of window as it can't keep up with complex kernels. How...
View ArticleOpenCL open source library
Hello. Is there open source openCL library (without *.lib and *.dll) for AMD graphic cards?
View Articlestrange delays appear in CPU kernel execution when adding GPU
I'm working on a multi-threaded C++ application that uses OpenCL to solve differential equations. The application is intended to utilize both the CPU and GPU OpenCL devices when available. This dual...
View ArticleWhat is the true limit of OpenCL 3-D image?
Hi All, What is the image memory limit for OpenCL 1.2? On my AMD 7970 6GB, the following:size_t sz=0, sx, sy;clGetDeviceInfo(device_, CL_DEVICE_IMAGE3D_MAX_DEPTH, sizeof(sz), &sz,...
View ArticleHypervisor support in Passthrought mode for HPC with FirePro S10000
What kind of hypervisor type 1 (bare metal, like exsi?kvm or xen) do you support with AMD FirePro S10000 in passthru mode to map GPU to VM?My case: I want to use GPU in VM with passthru mode to work...
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BUG: SIGSEGV Segmentation fault in clWaitForEventsHI
Hi, I believe I have found a bug in the OpenCL driver library for linux. I get a segmentation fault (sometimes) when calling wait for events across several GPU's and driver versions. I have made a...
View ArticleLLVM error when compiling kernel
I am getting this error message:LLVM ERROR: Cannot select: 0xb1e670: i8 = setcc 0xa94230, 0xf72f00, 0xae22a0 [ID=25] 0xa94230: i32 = AMDILISD::ADD 0xf72f00, 0xf6f7d0 [ID=22] 0xf72f00: i32 = mul...
View ArticleWhere can I get "clbinary.zip"
Hi everyone I try to make offline compile.The following document is described that"a sample program that demonstrates "offline compile" technique, see the clbinaryuse.c file in...
View ArticleSegmentation fault with CL_DEVICE_TYPE_CPU, but not CL_DEVICE_TYPE_GPU
I have a kernel that does something similar to a map/reduce, and when running on the GPU, it works completely correctly. However, when I switch the device_type in clGetDeviceIDs to CL_DEVICE_TYPE_CPU,...
View Articlecl_command_queue reference count does not track cl_event instances and leads...
I have discovered what I consider to be a bug in the reference tracking for cl_command_queue instances that leads to a segmentation fault under a reasonable usage scenario. The cl_command_queue...
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a program to test SVM for OpenCl2.0, but it cannot get the right result
#include <CL\cl.h>#include <stdio.h>#include <stdlib.h>#include <time.h>#include <iostream>#include <fstream>#include <math.h> int convertToString(const char...
View ArticleclBuildProgram segfaults and other problems.
I have a bug in my OpenCL code in which a computation results in nan. In the process of tracking the source of this bug I added the following code: if (isnan(var){ debug_info[0] = 1; } After...
View ArticleOpenCL API execution time is too long
My system frequently(10000 or more) executes the following OpenCL API.----------------------------------------------clEnqueueTask(command_queue, kernel, 0, NULL,&event); (1us)clWaitForEvents(1,...
View ArticleOpenCL Programming Webinar on Monday
Our previous webinar on this topic was so successful, we're running it again. Join us on Monday 9 am PT / 11 am CT / 12 pm ET for a free webinar, Productive OpenCL Programming – An Introduction to...
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