Devkit,120w power mode, gpu freq can reach 1.574GHZ

Robotics & Edge Computing Jetson & Embedded Systems Jetson Thor
1

hi，

在Devkit R38.2.1上，修改下面配置， 120W模式（最大限制1.386GHz）下GPU频率达到 1.574GHz

sudo tee /sys/class/devfreq/*/governor <<< performance

但是在devkit R38.2.0上，同样的配置，gpu频率是1.386GHz。

log.txt (8.2 KB)

3

Hi,
Does it work by executing $ sudo jetson_clocks? we would suggest use the script instead of manually setting device nodes.

4

hi, dane

我试了一下，sudo jetson_clocks，偶尔也会达到1.57GHz，可能跟采样有关。但是sudo jetson_clocks会把所有的频率设成最高，这不是我们想要的效果，因为功耗也上升了

我们的目的不是为了把所有的设备频率设成最大，只是为了验证之前的卡死的问题(怀疑跟devfreq一直调频有关，所以nv要求我们用上面的命令进行验证Desktop system crashed - #34 by WayneWWW)
所以这个问题还是需要分析一下的，我们需要精细的控制cpu,gpu的频率，功耗。

5

Hi,
In jetson_clocks, the hardware engines are set to maximum through the functions like:

        do_igpu
        do_emc
        do_dla
        do_pva
        do_cvnas

Would suggest customize the script to keep the required engines.

6

那jetson_clocks就是通过设置minFreq和MaxFreq来设置性能的吧。为什么gpu的CurrentFreq比MaxFreq还大？比如下面的gpu的MaxFreq是1.56GHz，而CurrentFreq是1.69GHz
sudo jetson_clocks --show
SOC family:tegra264 Machine:NVIDIA Jetson AGX Thor Developer Kit
Online CPUs: 0-13, Offline CPUs:
cpu0: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=972000 IdleStates: WFI=1 cc7=1
cpu1: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=972000 IdleStates: WFI=1 cc7=1
cpu2: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu3: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu4: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu5: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu6: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1728000 IdleStates: WFI=1 cc7=1
cpu7: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu8: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1728000 IdleStates: WFI=1 cc7=1
cpu9: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=972000 IdleStates: WFI=1 cc7=1
cpu10: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=972000 IdleStates: WFI=1 cc7=1
cpu11: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu12: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1674000 IdleStates: WFI=1 cc7=1
cpu13: Governor=schedutil MinFreq=972000 MaxFreq=2601000 CurrentFreq=1080000 IdleStates: WFI=1 cc7=1
gpu-gpc-0 MinFreq=314000000 MaxFreq=1386000000 CurrentFreq=1575000000
gpu-nvd-0 MinFreq=314000000 MaxFreq=1557000000 CurrentFreq=1692000000
EMC MinFreq=665600000 MaxFreq=4266000000 CurrentFreq=665600000 FreqOverride=0
PVA0_VPS0: Online=0 MinFreq=0 MaxFreq=1215000000 CurrentFreq=1215000000
PVA0_AXI: Online=0 MinFreq=0 MaxFreq=909000000 CurrentFreq=909000000
FAN Dynamic Speed Control=nvfancontrol hwmon1_pwm1=72
FAN Dynamic Speed Control=nvfancontrol hwmon1_pwm1_enable=1
NV Power Mode: 120W