Loading in 5 sec....

Thermal Management in DatacentersPowerPoint Presentation

Thermal Management in Datacenters

- 67 Views
- Uploaded on
- Presentation posted in: General

Thermal Management in Datacenters

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Thermal Management in Datacenters

Ayan Banerjee

- Tasks: Requires a certain number of servers (cores) for a specified amount of time.
- Each task has certain power consumption on each server of a particular node.
- Assign cores to the tasks based on certain objective.
- Remember task placement and not task scheduling

- Build CFD model of a real Datacenter
- Perform thermal profiling
- Test the performance of different task placement algorithms on this model
- Simulate Cross Interference minimization algorithm for multiple task scenario arriving at different time intervals
- Test the optimality of the solutions for different objectives

- Flovent 6.1

- Simplified Heterogeneous datacenter takes 18 hrs to run the base case
- Cannot set parameters dynamically
- According to findings HVAC outlet temperature varies with its inlet temperature
- Cannot simulate that in Flovent so there will be difficulties in simulating algorithms that try to reduce total energy consumption

- Energy aware task placement algorithms must take into account the behavior of the Cooling System
- Basis: AC works harder when the Hot isle temperature in the datacenter increases

- For the objective of minimizing total energy
- We have to consider the working of the AC in the objective function
- We have to consider a heterogeneous Datacenter
- We have to design algorithms that will allow different jobs to work on the same server

- Took the simplified CFD model of the Datacenter
- There were 50 chassis. The design was for homogeneous environment.
- Built a heterogeneous environment with 20 chassis equipped with dual core processor and the rest 30 chassis with quad core.
- Total number of cores = 1300.
- Dual core – idle = 1728 W, Busy = 3260 W
Quad core – idle = 2420 W, Busy = 6020 W

- Two applications T1 and T2
- T1 required 288 servers for a time period of 3 units starting from unit 0 to unit 3
- T2 required 672 cores for a time period of 3 units starting form unit 1 to unit 4

- Find the solution for the cross interference minimization algorithm for the objective of minimizing Maximum Temperature and minimizing total energy.

Minimizing Maximum Temperature

Maximum Inlet Temperature = 24.6016 degrees

Total Power = 162525 W

Minimizing Total Energy

Task 2

Task 1

Total Energy Consumption = 576592 J

MaxTin = 26.3093 C 29.0858 C 27.7871 C

- CFD Model of Datacenter not yet ready
- We have information on Saguaro Racks but little information on other racks
- Certain physical parameters need to be recorded

- Power Profiling not done as a result of incomplete CFD Model
- Simulation Environment for multiple task arriving at different times ready
- Optimality of the cross interference minimization algorithm tested
- Apart form the cited goals a lot of observations useful for future work are made