Jesse Zhang
1abd02af32
Since the amdgpu driver commit 1f4ac94b59aebebf. https://lore.kernel.org/all/a121a72c-b441-4f42-94a3-4597b7f19e7d@amd.com/T/ gtt and vram are available for compute. So, the vramSize obtained by function GetSysMemSize is actually about 50% system memory. But small APUs don't have large system memory, and kernel memory limit is smaller for them. Therefore, it will fail to register SVM Range for SysBuffer and SysBuffer2. Example: System Memory size: 3373M Kernel memory limit:1791M VRAM Memory Size: 256M GTT Memory Size: 1686M Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com> Change-Id: Ib3826933100ab7b432cb476caaf2d91cc9cdb948 Signed-off-by: Chris Freehill <cfreehil@amd.com>
1. Note on building kfdtest To build this kfdtest application, the following libraries should be already installed on the building machine: libdrm libdrm_amdgpu libhsakmt If libhsakmt is not installed, but the headers and libraries are present locally, you can specify its directory by export LIBHSAKMT_PATH=/*your local libhsakmt folder*/ With that, the headers and libraries are searched under LIBHSAKMT_PATH/include and LIBHSAKMT_PATH/lib respectively. 2. How to run kfdtest Just run "./run_kfdtest.sh" under the building output folder. You may need to specify library path through: export LD_LIBRARY_PATH=/*your library path containing libhsakmt*/ Note: you can use "run_kfdtest.sh -h" to see more options.