在AWS Cloud VM上Rapl？目录/sys/class/powerCapp中的无intel_rapl和相关文件
我想使用英特尔Rapl接口记录CPU的能源消耗。我正在使用两个服务器：AWS EC2实例和一台物理机器。 但是，我发现AWS EC2实例上的目录/sys/class下没有powerCap目录。将Linux内核更改为5.13.19版本并配置了Intel Rapl后，在Power Cap目录下，/sys/class/class。但是在/sys/class/class/powercap下没有intel-rapl，因此我也无法使用RAPL接口。
这就是我在AWS EC2实例上/sys/class/powerCap下的内容：
$ ls /sys/class/powercap
dtpm
这是我在物理机器上的/sys/class/class/powercap 和也是我在AWS EC2实例上期望的：
$ ls /sys/class/powercap
dtpm intel-rapl intel-rapl:0 intel-rapl:0:0 intel-rapl:1 intel-rapl:1:0
这些是AWS EC2实例上与RAPL相关的模块，在我的物理机器上是相同的：
$ find /lib/modules/$(uname -r) -name *rapl*
/lib/modules/5.13.19/kernel/drivers/powercap/intel_rapl_common.ko
/lib/modules/5.13.19/kernel/drivers/powercap/intel_rapl_msr.ko
/lib/modules/5.13.19/kernel/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.ko
/lib/modules/5.13.19/kernel/arch/x86/events/rapl.ko
我可以从sudo sudo dmidecode -t4 | | GREP插座。设计：| WC -L EC2实例上有4个CPU插座。 EC2实例的CPU是Intel Xeon。这些CPU支持RAPL。因此，在/sys/class/powerCap下应该有更多的东西！
我正在为AWS EC2实例使用深度学习AMI（Ubuntu 18.04）版本61.2。
有人知道为什么我不能在AWS EC2实例上使用PowerCap和Rapl吗？是因为EC2实例是虚拟机，而虚拟机不支持RAPL接口？还是我错过了任何步骤？我真的很感谢任何帮助。谢谢你！
I want to use the Intel RAPL interface to record the energy consumption on CPUs. I am using two servers: an AWS EC2 instance and a physical machine.
However, I found that there is no powercap directory under the directory /sys/class on the AWS EC2 instance. After I changed the Linux kernel to version 5.13.19 and have the Intel RAPL configured, there is a power cap directory under /sys/class. But there is no intel-rapl under /sys/class/powercap, so I can not use the RAPL interface as well.
This is what I have under /sys/class/powercap on the AWS EC2 instance:
$ ls /sys/class/powercap
dtpm
This is what I have under /sys/class/powercap on the physical machine, and is also what I expect on the AWS EC2 instance:
$ ls /sys/class/powercap
dtpm intel-rapl intel-rapl:0 intel-rapl:0:0 intel-rapl:1 intel-rapl:1:0
These are the RAPL-related modules on the AWS EC2 instance, which are the same on my physical machine:
$ find /lib/modules/$(uname -r) -name *rapl*
/lib/modules/5.13.19/kernel/drivers/powercap/intel_rapl_common.ko
/lib/modules/5.13.19/kernel/drivers/powercap/intel_rapl_msr.ko
/lib/modules/5.13.19/kernel/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.ko
/lib/modules/5.13.19/kernel/arch/x86/events/rapl.ko
I can tell from sudo dmidecode -t4 | grep Socket.Designation: | wc -l that there are 4 CPU sockets on the EC2 instance. The cpu for the EC2 instance is Intel Xeon. RAPL is supported for these cpus. So there should be something more under /sys/class/powercap!
I am using the Deep Learning AMI (Ubuntu 18.04) Version 61.2 for the AWS EC2 instance.
Does anyone know why I cannot use powercap and RAPL on the AWS EC2 instance? Is it because the EC2 instance is a virtual machine and the RAPL interface is not supported by the virtual machine? Or have I missed out any steps? I would really appreciate any help. Thank you!
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