NTC's AI Accelerator (HM30)

Environment

• Ubuntu 18.04.6 with Kernel 5.4.0-150-generic

  • Kernel 5.4.0-150-generic will be automatically installed if Ethernet cable is connected during Ubuntu installation

  • Without Ethernet cable connected, the default kernel is shipped with 5.4.0-84. The kernel could be upgraded manually

# Remove the existing kernel image
sudo apt-get update
sudo apt-get remove linux-image-generic-hwe-18.04
sudo apt-get autoremove

# Install a new kernel
sudo apt-get install linux-image-5.4.0-150-generic

Benchmark

• Remember to set CPU mode to MAX, and disable all C-state settings in BIOS.

• Check PCIe speed (expected Gen4x8)

sudo lspci -n -d 1ec8:0800 -vvv | grep -i LnkSta | grep -i width

• Disable thermal management demand to max out the CPU performance

sudo systemctl stop thermald.service

• Steps to run benchmark

# There are a few kernel modules need to be loaded with specific order

sudo modporbe i915 # pre-built kernel module
sudo modporbe drm

# $ sudo lsmod | grep drm
# drm_kms_helper        184320  1 i915
# fb_sys_fops            16384  1 drm_kms_helper
# syscopyarea            16384  1 drm_kms_helper
# sysfillrect            16384  1 drm_kms_helper
# sysimgblt              16384  1 drm_kms_helper
# drm                   495616  4 drm_kms_helper,hmcl_drv,i915

sudo insmod hmcl_drv.ko # Provided by the GPU supplier
sudo insmod dmatest.ko # Provided by the GPU supplier

sudo ./dmastress_test1.sh 100000 # 100000 means iterations of benchmark

• The benchmark result will be dumped in dmesg

  

TBD

Try to recompile a unsigned kernel to have Ethernet work with Ethernet driver rebuild https://www.cyberciti.biz/tips/compiling-linux-kernel-26.html

CONFIG_MODULE_SIG=n
# CONFIG_MODULE_SIG_FORCE is not set
CONFIG_MODULE_SIG_ALL=n