• OpenCL 64 bit atomics under Vega 8 Integrated Graphics on Win10 ?

    I am working to compile an OpenCL program which needs 64bit atomics (atomic_xchg and atomic_add, with long datatype). I have added " #pragma OPENCL EXTENSION cl_khr_int64_base_atomics : enable" and the ...
    last modified by glupescu
  • OpenCL driver bug

    EDIT: reformat  EDIT 2: correct driver version   Found a weird behavior in AMD's OpenCL compiler. Code taken straight from Boost library:   __kernel void serial_adjacent_find(const uint size, __global...
    last modified by rosenrodt
  • OpenCL development for Radeon VII under Windows 7

    Hello!   Recently I've bought a Radeon VII for OpenCL development purposes.   I installed it in my dual-boot Windows 7 & Linux machine, and now I'm trying to setup a development environment.   My...
    last modified by be_dos
  • Error code -2 (Device not availaible) when running clCreateContextFromType

    Hello Everyone,   I'm currently retesting some OpenCL code and I recently had a problem on my code. When I'm trying to get the device list on my computer with the C++ Wrapper function ... I get a error...
    last modified by fyfy
  • OpenCL: Delay in inter-kernel execution when requesting callbacks

    Hi I have a problem with delays in kernel execution when I request callbacks from OpenCL. In my application, I need to execute kernels at a "very" high rate (around 300Hz), and I need a callback to my host applicati...
    last modified by nfogh
  • OpenCL compilation hangs forever

    Hi all,   I am trying to compile this project for an AMD GPU: GitHub - webmaster128/lisk-vanity: A tool to generate short Lisk addresses with GPU support   The c.l files are in lisk-vanity/src/opencl at m...
    last modified by webmaster128
  • Optimizing data transfer with APU (best way to test zero-copy?)

    So finally I have got my APU test system (I paid for it!): -CPU: AMD Ryzen 5 2400G -MB: Asrock X470 Fatality Gaming mini-ITX -RAM: G.Skill 3200 C14, 16GB*2 -OS: Windows 10 Pro -IDE and compiler: Visual Studio 2017 Com...
    last modified by sandbo
  • SPIR support in new drivers lost

    I already ask this question in Drivers & Software section but nobody answer.   --------------------------------------------------------------------------------------------------------------------------------...
    last modified by ipse
  • OpenCL amdgpu-pro generated code performance - please convert 'select' to cndmask

    Hi,   I don't know if this place is the best place to report opencl compiler performance issues, but well I didn't find a better place.   SUMMARY: Please AMD devs, when an OpenCL dev takes the time to expl...
    last modified by mannerov
  • CL-GL Interop fastest way to synchronize?

    We are using OpenCL on Windows as part of a proprietary game-engine where we use the CL-GL interop functionality to communicate between the simulation and the rendering engine. Our core loop currently executes the fol...
    last modified by george72
  • Is there any way to split a compute device (emulate two, or more, GPUs on the a single device)?

    For example I have a RX Vega 64 with 64 CUs and 8 GB VRAM, would it be somehow possible to make it appear like two GPU compute devices with 32 CUs and 4 GB VRAM each? Maybe some undocumented environment variable for d...
    last modified by bomby
  • Strange behavior of a kernel, need fresh ideas

    I lost two days debugging or better to say tried to debug my kernel. Basically the kernel looks like this (part of dagger-hashimoto initialization):   1. copy from global to private 2. do private 3. copy from ...
    last modified by kbala
  • Missing OpenCL CPU support under Windows

    On my system the (i think) most recent version of the AMD drivers (18.8.1, Windows 10 x64) no longer returns the CPU (FX-8350) as a valid OpenCL device.  Is this intended behavior or just a bug in my specific ins...
    last modified by pangea
  • Memory-Leak at calling clBuildProgram with Radeon WX9100

    Running the Code below leads to massive main memory consumption by using Radeon WX9100 with driver Version 18.Q1. At iteration 1000 my program consumes about 1 GiByte Memory. I also tested the code with AMD FirePro ...
    last modified by recoguy
  • How to use llvm to offline compile .cl file into binary that can run with amdgpu pro driver?

    Now I am trying to build OpenCL kernel binary with llvm. I successfully compiled .cl into assembly, but cannot figure out a way to compile that format of assembly into binary that can run with AMDGPU pro driver. That ...
    last modified by fancyix
  • OpenCL linker hangs & terminates application on R9 200

    After shipping our application, some users with AMD R9 200 series cards report the application hangs up and then quits. After studying log files and minidumps it seems the issue is the with OpenCL linker on those syst...
    last modified by george72
  • E8860 do not  be identify in OpenCL

    Hi,      I have a X86 signal board computer(ADVANTECH MIC-6311,i7-4700EQ,HD Graphics 4600 ) and a E8860 GPU board.They are connected through PCIe.      My system is Win7 32bit...
    last modified by yyd1986
  • OpenCL compiler crash with compound literals.

    The following code that uses compound literals causes the AMD OpenCL compiler to crash.   platform_version: OpenCL 2.0 AMD-APP (1800.8) platform_name: AMD Accelerated Parallel Processing device_name: AMD Radeo...
    last modified by Ono-Sendai
  • Three cheers for anonymous AMD engineer that fixed OpenCL driver bug

    My app makes very heavy use of OpenCL events. For the longest time, the app was unstable - seemingly there was a race condition where event callbacks sometimes would not get called, causing my app to stop working. ...
    last modified by boxerab
  • 64bit flat memory address -> buffer_load

    Hi,   I have a 64bit address, and it works well when I'm using flat_load_dword instructions. However I would like to use the advanced address calculation goodies of the old buffer_load_instruction.   My q...
    last modified by realhet