---
# System prepended metadata

title: 29 June - 3 July 2020
tags: [Study Note]

---

# 29 June - 3 July 2020
###### tags: `Study Note`

## Monday, 29 June 2020
- Punch in (Lab) : 9.02
- Expected Outcome for Today :
	- Reading all O-RAN Exhibition
- Punch out : 19.00 
- Tasks has Been Done Today :
	- Generate O-DU L2 Doxygen	
	- Discuss with nick
	- Reading/Watch O-RAN exhibition Open Interface part

## Tuesday, 30 June 2020
- Punch in (Lab) : 8.57
- Expected Outcome for Today :
	- Continue Reading all O-RAN Exhibition
- Punch out : 16.00 
- Tasks has Been Done Today :
	- Continue Reading all O-RAN Exhibition

## Wednesday, 1 July 2020
- Punch in (Lab) : 8.58
- Expected Outcome for Today :
	- Continue Reading all O-RAN Exhibition
- Punch out: 19.00
- Tasks has Been Done Today :
	- Finish Reading all O-RAN Exhibition

## Thursday, 2 July 2020
- Punch in (Lab) : 8.40
- Expected Outcome for Today :
	- Findout differences between amber relase and bronze release O-DU High Code
- Punch out : 16.00 
- Tasks has Been Done Today :
	- Help debug O-DU Low Installation
	    - DPDK Problem
	        - Problem: can't find BBdev installation
	            ![](https://i.imgur.com/bjd0Dh6.png)
            - Solution (for now):
                - directly download the DPDK 20.02, skip the step 2 and 3 
        - CPU Freq Problem
            - Problem: https://hackmd.io/YfCmOdpJQsSyLMV2e8Qh6w?view
                ![](https://i.imgur.com/OkhcNIn.png)

            - Presumption: The CPU freq is 2.2GHz, **the requirement is 2.5 Ghz**
            - **Detail**:
                - In step number 11
                    ![](https://i.imgur.com/Z3HCwmR.png)
                    The instruction told us to change the configuration using the wrmsr 0x199 instruction
                    We didn't know how to change the value (how to calculate)
                    Internet not helping :(, maybe I need to find books in the library (x86 instructions...)
                    
                    basicly the wsmr instruction is changing the registry inside the processor
                    The 0x199 registry is related to the multiplier of the CPU Frequency
                    the 0x1900 value is a mapping value of multiplier of the **intel's CPU used in the O-RAN project**
                    we didn't know the mapping value of multiplier in the AAEON's server
                    
                - The CPU original is 3.5Ghz up to (turbo) 4.0Ghz but based on tommy's result only 2.2 Ghz
                - **Tried** set the constant to 0x1A00 (larger value), the 2.2Ghz won't changed
                - **Tried** look up bios config (related to processor configuration) and try change it but is not reulting any 
            - Solution (for now):
                - ask the AAEON how to tune the CPU
                    - is there are configuration needed in the BIOS?