Using processors of many computers

tahtawy · June 13, 2020, 09:16

Due to Corona matters , I can't go to the university to use the CFD Lab and now I am doing a simulation of a transient case which will take a lot of time if done using cores of one computer

so I have 2 computers and 1 laptop

Is there a way to connect them together to use all of their processors ?

If yes How I would do that in terms of Hardware connections and software connections?

thanks

karachun · June 14, 2020, 10:11

AFAIK you can get benefits from many computers only if you use a high speed connection like InfiniBand. If you use regular Ethernet then connection between computers will become bottleneck and computational speed may even decrease compared to a single machine.

AtoHM · June 14, 2020, 10:48

Second that. Without high-end connection between the units your additional resources will be eaten by the needed communication being to slow. Also I can imagine the cores with the least speed and RAM will just slow down all the others. I bet the overall performance will be worse compared to one computer.

kileisnie · July 25, 2020, 12:21

Quote:

Originally Posted by AtoHM

Second that. Without high-end connection between the units your additional resources will be eaten by the needed communication being to slow. Also I can imagine the cores with the least speed and RAM will just slow down all the others. I bet the overall performance will be worse compared to one computer.

Pretty awesome and coo..

June 13, 2020, 09:16	Using processors of many computers	#1
tahtawy Member Ahmed Join Date: Sep 2019 Posts: 34 Rep Power: 8	Due to Corona matters , I can't go to the university to use the CFD Lab and now I am doing a simulation of a transient case which will take a lot of time if done using cores of one computer so I have 2 computers and 1 laptop Is there a way to connect them together to use all of their processors ? If yes How I would do that in terms of Hardware connections and software connections? thanks

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June 14, 2020, 10:11		#2
karachun Senior Member Join Date: Nov 2015 Posts: 250 Rep Power: 13	AFAIK you can get benefits from many computers only if you use a high speed connection like InfiniBand. If you use regular Ethernet then connection between computers will become bottleneck and computational speed may even decrease compared to a single machine.

June 14, 2020, 10:48		#3
AtoHM Senior Member M Join Date: Dec 2017 Posts: 729 Rep Power: 14	Second that. Without high-end connection between the units your additional resources will be eaten by the needed communication being to slow. Also I can imagine the cores with the least speed and RAM will just slow down all the others. I bet the overall performance will be worse compared to one computer.