NX custom mode

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

I have created a custom mode in the NX enabling all 6 cores at 1.9GHz max.
I don’t intend to use much GPU and so far the power consumed (while stress all 6core didn’t go up 11W) doesn’t seem to reach the limit of 15W, what I would like to know is if I could use this mode reliably or did you did any test that you don’t recommend to use this mode.

Custom mode:
CPU_ONLINE CORE_0 1
CPU_ONLINE CORE_1 1
CPU_ONLINE CORE_2 1
CPU_ONLINE CORE_3 1
CPU_ONLINE CORE_4 1
CPU_ONLINE CORE_5 1
TPC_POWER_GATING TPC_PG_MASK 1
GPU_POWER_CONTROL_ENABLE GPU_PWR_CNTL_EN on
CPU_DENVER_0 MIN_FREQ 1190400
CPU_DENVER_0 MAX_FREQ 1907200
CPU_DENVER_1 MIN_FREQ 1190400
CPU_DENVER_1 MAX_FREQ 1907200
CPU_DENVER_2 MIN_FREQ 1190400
CPU_DENVER_2 MAX_FREQ 1907200
GPU MIN_FREQ 0
GPU MAX_FREQ 1109250000
GPU_POWER_CONTROL_DISABLE GPU_PWR_CNTL_DIS auto
EMC MAX_FREQ 1600000000
DLA_CORE MAX_FREQ 1100800000
DLA_FALCON MAX_FREQ 640000000
PVA_VPS MAX_FREQ 819200000
PVA_CORE MAX_FREQ 601600000
CVNAS MAX_FREQ 576000000

Thank you in advance

3

hello csgodinho,

please refer to Supported Modes and Power Efficiency.
you should note that it’ll only enable 2-CPUs for the maximum performance mode, (i.e. mode-0.)
thanks

4

Yes I have followed this page to define a custom power mode and after setting it I check the tegrastats and all 6cores are clearly at 1.9GHz.
I would like to know if you did any test in this mode to know if I could use it reliably.

5

hello csgodinho,

the CPU operation of Xavier NX did mention six cores running at 1.9GHz for 15W power mode.
please also check Xavier NX Module Data Sheet. you may refer to Chapter-1.2 Carmel CPU Complex for more details.
thanks

6

Thank you for the answer
In the document you shared it again only mentions the 1.4GHz for the 6 cores and the 1.9GHz for only 2 cores that is why I was worried to set and use at 1.9GHZ on all 6 cores.
If that is not the case and I can set a custom mode with all 6 cores at 1.9GHz for the 15W power mode I will assume is reliable to use.
Thank you for your help and time

9

Please use our powerEstimator public webtool to customize nvpmodel for Xavier-NX. The userGuide for the tool can be downloaded from https://jetson-tools.nvidia.com/powerestimator/userguide

10

Thank you so much I will adjust the custom mode to make sure the power consumption doesn’t exceeds 15W.