Hi, I updated to Jetpack 4.4 DP and then I cannot find the power mode Denver. or, the two denver cores do not work at all. ( Observed by tegrastats or jtop ) I need only cuda 10 on my TX2 and I wonder if it works if I install cuda 10.2 (downloaded in Jetpack 4.4) directly in a Jetpack 4.3 env…

Hi, Please check 5.16 Increased Kernel Launch Latency on Denver 2 Cores in release notes of r32.4.3. Due to the concern, we disable Denver cores by default. For leveraging Denver cores, please execute sudo nvpmodel -m 0 and taskset: https://man7.org/linux/man-pages/man1/taskset.1.html For using …

[CPU stress] I let 4 CPUs fully loaded, mode MAXN : stress --cpu 4 --timeout 600 and you can see the tegrastats as well as the jtop showing 100%, 0%, 0%, 100%, 100%, 100% I tried before in a Jetpack 4.3 environment by the same way and it seems that the 2 denver cores take the majority for any …

Hi zhuyijun, We will check issue and update to you. Thanks!

Hi zhuyijun, Please remove isolcpus=1-2" property in config file: CMDLINE_ADD="console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0; Please reference Release Notes .

Hi Carolyuu, Thank you very much. Would you please tell me more about how to modify this property? I have no idea if I should reflash the board after having changed the files on the host.

Hi zhuyijun, Please reference below steps: sudo vim p2771-0000.conf.common Remove “isolcpus=1-2”: CMDLINE_ADD=“console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0”; Flash kernel-dtb: $ sudo ./flash.sh -r -k kernel-dtb jetson-tx2 mmcblk0p1

Hi zhuyijun, After follow my steps to remove “isolcpus=1-2”, you don’t see the denver cores enable? The “p2771-0000.conf.common” is in Linux_for_Tegra folder, edit it and remove “isolcpus=1-2”, then flash again. After system boot up, run “sudo nvpmodel -m 0” to enable denver cores and using “tegr…

[image] carolyuu: sudo nvpmodel -m 0 Yep, I performed those steps. It did not work. Jetpack 4.4 is so buggy.

Hi zhuyijun, We’ll check internal and update to you.

Cannot enable denver cores for TX2 (Jetpack 4.4 DP)

Robotics & Edge Computing Jetson Systems Jetson TX2

vondalej July 23, 2020, 5:50pm 13

Has this fix changed since the DP? Tried it. Didn’t work.

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Cannot enable denver cores for TX2 (Jetpack 4.4 DP)

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