This page describes scripts to retrieve and configure settings for the cuBB SDK.
This section describes how to create an initialization script that configures the system settings for Aerial.
Because the network optimization settings described below are not persistent across system reboot, they need to be re-applied each time after the system boots up. Saving these steps in a bash script will make it easier to run.
On a system where everything runs natively, all the steps below will run natively with the script. On a system that uses a Docker container for the network software tools and drivers, these will need to run from the container.
Creating the Script
Create a bash shell script called aerial-init.sh for the convenience of initializing the system each time after the system boots up.
$ nano aerial-init.sh
$ chmod 755 aerial-init.sh
These are the contents of aerial-init.sh:
#=====================================================================
# Enable GPU Persistence Mode on the GPU
#=====================================================================
sudo nvidia-smi -pm 1
sudo nvidia-smi -i 0 -lgc $(sudo nvidia-smi -i 0 --query-supported-clocks=graphics --format=csv,noheader,nounits | sort -h | tail -n 1)
sudo nvidia-smi -mig 0
# Load nvidia-peermem
sudo modprobe nvidia-peermem
sudo ifconfig ens6f0 up
sudo ifconfig ens6f1 up
# Improving FH and PTP ports TX timestamping accuracy
sudo ethtool --set-priv-flags ens6f0 tx_port_ts on
sudo ethtool --set-priv-flags ens6f1 tx_port_ts on
# Disable flow rules for both ports of CX6-DX NIC
sudo ethtool -A ens6f0 rx off tx off
sudo ethtool -A ens6f1 rx off tx off
Included in the SDK is a script that checks and displays key system configuration settings that are important for running the Aerial cuBB SDK.
$ pip3 install psutil
$ cd $cuBB_SDK/cuPHY/util/cuBB_system_checks
$ sudo -E python3 ./cuBB_system_checks.py
The output of cuBB_system_checks.py may differ slightly between bare-metal and container versions
of the environment. The script helps to retrieve the software-component versions and hardware
configuration. Refer to the Release Manifest in the cuBB Release Notes to ensure the correct
software-component versions are installed. Below is an example output on a bare-metal platform:
# In order to get the system or ptp info, the command has to run on ths host.
$ sudo python3 cuBB_system_checks.py --sys
-----General--------------------------------------
Hostname : devkit-1
IP address : 192.168.1.100
Linux distro : "Ubuntu 20.04.3 LTS"
Linux kernel version : 5.4.0-65-lowlatency
-----System---------------------------------------
Manufacturer : GIGABYTE
Product Name : E251-U70-00
Base Board Manufacturer : GIGABYTE
Base Board Product Name : MU71-SU0-00
Chassis Manufacturer : GIGABYTE
Chassis Type : Rack Mount Chassis
Chassis Height : Unspecified
Processor : Intel(R) Xeon(R) Gold 6240R CPU @ 2.40GHz
Max Speed : 4000 MHz
Current Speed : 2400 MHz
$ sudo python3 cuBB_system_checks.py
-----General--------------------------------------
Hostname : devkit-1
IP address : 192.168.1.100
Linux distro : "Ubuntu 20.04.3 LTS"
Linux kernel version : 5.4.0-65-lowlatency
-----Kernel Command Line--------------------------
Audit subsystem : audit=0
Clock source : clocksource=tsc
HugePage count : hugepages=16
HugePage size : hugepagesz=1G
CPU idle time management : idle=poll
Max Intel C-state : intel_idle.max_cstate=0
Intel IOMMU : intel_iommu=off
IOMMU : iommu=off
Isolated CPUs : isolcpus=2-21
Corrected errors : mce=ignore_ce
Adaptive-tick CPUs : nohz_full=2-21
Soft-lockup detector disable : nosoftlockup
Max processor C-state : processor.max_cstate=0
RCU callback polling : rcu_nocb_poll
No-RCU-callback CPUs : rcu_nocbs=2-21
TSC stability checks : tsc=reliable
-----CPU------------------------------------------
CPU cores : 24
Thread(s) per CPU core : 1
CPU MHz: : 3200.000
CPU sockets : 1
-----Environment variables------------------------
CUDA_DEVICE_MAX_CONNECTIONS : N/A
cuBB_SDK : N/A
-----Memory---------------------------------------
HugePage count : 16
Free HugePages : 16
HugePage size : 1048576 kB
Shared memory size : 47G
-----Nvidia GPUs----------------------------------
GPU driver version : 515.43.04
CUDA version : 11.7
GPU0
GPU product name : NVIDIA A100-PCIE-40GB
GPU persistence mode : Enabled
Current GPU temperature : 29 C
GPU clock frequency : 1410 MHz
Max GPU clock frequency : 1410 MHz
GPU PCIe bus id : 00000000:B6:00.0
-----GPUDirect topology---------------------------
GPU0 mlx5_0 mlx5_1 CPU Affinity NUMA Affinity
GPU0 X PIX PIX 0-23 N/A
mlx5_0 PIX X PIX
mlx5_1 PIX PIX X
Legend:
X = Self
SYS = Connection traversing PCIe as well as the SMP interconnect between NUMA nodes (e.g., QPI/UPI)
NODE = Connection traversing PCIe as well as the interconnect between PCIe Host Bridges within a NUMA node
PHB = Connection traversing PCIe as well as a PCIe Host Bridge (typically the CPU)
PXB = Connection traversing multiple PCIe bridges (without traversing the PCIe Host Bridge)
PIX = Connection traversing at most a single PCIe bridge
NV# = Connection traversing a bonded set of # NVLinks
-----Mellanox NICs--------------------------------
NIC0
NIC product name : ConnectX6DX
NIC part number : MCX623106AE-CDA_Ax
NIC PCIe bus id : 0000:b5:00.0
NIC FW version : 22.34.1002
FLEX_PARSER_PROFILE_ENABLE : 4
PROG_PARSE_GRAPH : True(1)
ACCURATE_TX_SCHEDULER : True(1)
CQE_COMPRESSION : AGGRESSIVE(1)
REAL_TIME_CLOCK_ENABLE : True(1)
-----Mellanox NIC Interfaces----------------------
Interface0
Name : ens6f0
Network adapter : mlx5_0
PCIe bus id : 0000:b5:00.0
Ethernet address : b8:ce:f6:33:fd:ee
Operstate : up
MTU : 1514
RX flow control : off
TX flow control : off
PTP hardware clock : 2
QoS Priority trust state : pcp
PCIe MRRS : 4096 bytes
Interface1
Name : ens6f1
Network adapter : mlx5_1
PCIe bus id : 0000:b5:00.1
Ethernet address : b8:ce:f6:33:fd:ef
Operstate : up
MTU : 1500
RX flow control : off
TX flow control : off
PTP hardware clock : 3
QoS Priority trust state : pcp
PCIe MRRS : 512 bytes
-----Linux PTP------------------------------------
● ptp4l.service - Precision Time Protocol (PTP) service
Loaded: loaded (/lib/systemd/system/ptp4l.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2022-09-27 00:05:26 UTC; 1 day 7h ago
Docs: man:ptp4l
Main PID: 1594 (ptp4l)
Tasks: 1 (limit: 94581)
Memory: 840.0K
CGroup: /system.slice/ptp4l.service
└─1594 /usr/sbin/ptp4l -f /etc/ptp.conf
Sep 27 00:05:26 dc6-devkit-18 systemd[1]: Started Precision Time Protocol (PTP) service.
Sep 27 00:05:26 dc6-devkit-18 taskset[1594]: ptp4l[127.145]: selected /dev/ptp2 as PTP clock
Sep 27 00:05:27 dc6-devkit-18 taskset[1594]: ptp4l[127.162]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE
Sep 27 00:05:27 dc6-devkit-18 taskset[1594]: ptp4l[127.162]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE
Sep 27 00:05:27 dc6-devkit-18 taskset[1594]: ptp4l[127.186]: port 1: new foreign master b8cef6.fffe.33fe16-1
Sep 27 00:05:27 dc6-devkit-18 taskset[1594]: ptp4l[127.436]: selected best master clock b8cef6.fffe.33fe16
Sep 27 00:05:27 dc6-devkit-18 taskset[1594]: ptp4l[127.436]: assuming the grand master role
Sep 27 00:05:27 dc6-devkit-18 taskset[1594]: ptp4l[127.436]: port 1: LISTENING to GRAND_MASTER on RS_GRAND_MASTER
● phc2sys.service - Synchronize system clock or PTP hardware clock (PHC)
Loaded: loaded (/lib/systemd/system/phc2sys.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2022-09-27 00:05:26 UTC; 1 day 7h ago
Docs: man:phc2sys
Main PID: 1598 (sh)
Tasks: 2 (limit: 94581)
Memory: 5.4M
CGroup: /system.slice/phc2sys.service
├─1598 /bin/sh -c /usr/sbin/phc2sys -s /dev/ptp$(ethtool -T $(lshw -c network -businfo | grep b5:00.0 | awk '{print $2}') | grep PTP | awk '{print $4}') -c CLOCK_REALTIME -n 24 -O 0 -R 256 -u 256
└─1897 /usr/sbin/phc2sys -s /dev/ptp2 -c CLOCK_REALTIME -n 24 -O 0 -R 256 -u 256
Sep 28 07:16:46 dc6-devkit-18 phc2sys[1897]: [112407.124] CLOCK_REALTIME rms 10 max 34 freq +7048 +/- 25 delay 1765 +/- 8
Sep 28 07:16:47 dc6-devkit-18 phc2sys[1897]: [112408.140] CLOCK_REALTIME rms 10 max 27 freq +7031 +/- 39 delay 1765 +/- 8
Sep 28 07:16:49 dc6-devkit-18 phc2sys[1897]: [112409.155] CLOCK_REALTIME rms 9 max 27 freq +7044 +/- 30 delay 1764 +/- 7
Sep 28 07:16:50 dc6-devkit-18 phc2sys[1897]: [112410.171] CLOCK_REALTIME rms 9 max 24 freq +7041 +/- 17 delay 1765 +/- 8
Sep 28 07:16:51 dc6-devkit-18 phc2sys[1897]: [112411.188] CLOCK_REALTIME rms 9 max 28 freq +7036 +/- 21 delay 1766 +/- 7
Sep 28 07:16:52 dc6-devkit-18 phc2sys[1897]: [112412.203] CLOCK_REALTIME rms 9 max 22 freq +7055 +/- 21 delay 1766 +/- 7
Sep 28 07:16:53 dc6-devkit-18 phc2sys[1897]: [112413.219] CLOCK_REALTIME rms 9 max 24 freq +7038 +/- 20 delay 1764 +/- 8
Sep 28 07:16:54 dc6-devkit-18 phc2sys[1897]: [112414.235] CLOCK_REALTIME rms 9 max 23 freq +7041 +/- 19 delay 1763 +/- 7
Sep 28 07:16:55 dc6-devkit-18 phc2sys[1897]: [112415.251] CLOCK_REALTIME rms 9 max 22 freq +7043 +/- 11 delay 1763 +/- 8
Sep 28 07:16:56 dc6-devkit-18 phc2sys[1897]: [112416.267] CLOCK_REALTIME rms 10 max 24 freq +7052 +/- 20 delay 1762 +/- 7
Sep 28 07:16:57 dc6-devkit-18 phc2sys[1897]: [112417.283] CLOCK_REALTIME rms 10 max 30 freq +7035 +/- 39 delay 1765 +/- 8
-----Software Packages----------------------------
cmake : N/A
docker /usr/bin : 19.03.13
gcc /usr/bin : 9.4.0
git-lfs : N/A
MOFED : 5.7-1.0.2.0
meson : N/A
ninja : N/A
ptp4l /usr/sbin : 1.9.2-1
-----Loaded Kernel Modules------------------------
GDRCopy : gdrdrv
GPUDirect RDMA : nvidia_peermem
Nvidia : nvidia
-----Non-persistent settings----------------------
VM swappiness : vm.swappiness = 0
VM zone reclaim mode : vm.zone_reclaim_mode = 0
-----Docker images--------------------------------
This section describes a list of system settings that are not persistent across system power-on reboot, and the required steps to re-apply them each time after the system is powered on or rebooted.
Applying the Optimization Settings
Apply the Aerial initialization settings:
$ ~/aerial-init.sh
Checking the NIC Status
To query back the Mellanox NIC firmware settings initialized with the script above, use these commands:
$ sudo mlxconfig -d $MLX0PCIEADDR q | grep "CQE_COMPRESSION\|PROG_PARSE_GRAPH\
\|FLEX_PARSER_PROFILE_ENABLE\|REAL_TIME_CLOCK_ENABLE\|ACCURATE_TX_SCHEDULER"
# FLEX_PARSER_PROFILE_ENABLE 4
# PROG_PARSE_GRAPH True(1)
# ACCURATE_TX_SCHEDULER True(1)
# CQE_COMPRESSION AGGRESSIVE(1)
# REAL_TIME_CLOCK_ENABLE True(1)
To check the current status of a NIC port, use this command:
$ sudo mlxlink -d $MLX0PCIEADDR
Alternatively, you can use the System Configuration Validation Script to obtain a full list of configuration settings.