ClMemdisk

Introduction

An elegant way to make use of the spare memory of your OpenCL-compatible graphics card.

• Maps GPU memory to a block device.
• Uses OpenCL API, (technically) works on any recent GPU.

Build

Dependencies

• OpenCL
• BUSE

Compile

Nearly all my projects use CMake. It's very simple:

mkdir build
cd build
cmake ..
make -j `nproc`

How to use

Usage: clmemdisk <operation> [/dev/nbdX] [size] [platform_id:device_id] [[platform_id:device_id]...]

Operations:
        list        List available OpenCL platforms and devices
        single      Use memory from single device
        stripe      Use memory from multiple devices with striping (WIP)

Example:
    # clmemdisk list
    # clmemdisk single /dev/nbd0 512M 0:0
    # clmemdisk stripe /dev/nbd233 1G 0:0 0:1 0:2

Caveats

• Only known to work in Linux.
• You need to load the nbd kernel module first.

Screenshot