cfx stops working

zese · February 16, 2021, 14:46

Dear Friends,

I am running a cfx simulation; however, after a while all things on my PC stops working and then I have to turn the PC off to overcome. I didnt have such a problem before. is there anyone have such a problem?

Best regards,

Zeinab

aero_head · February 16, 2021, 15:20

Hello Zeinab,

We will need some more information.

What are the specs of your PC, how many cores are you using and how heavy (i.e. how many grid-cells) is your computational model? Also, which version of CFX are you using?

ghorrocks · February 16, 2021, 15:24

CFX should not crash your entire PC. That suggests something is severely wrong with your PC. Are you sure you are not overheating your CPU? Is your CPU cooling fan working properly? Is there some other software interfering with it (virus checkers are notorious for this)? Is there some network glitch?

evcelica · February 16, 2021, 16:33

Perhaps you are using up all your RAM? I have seen PCs become unresponsive when they max out the RAM.

zese · February 17, 2021, 01:27

Dear Friends

Thanks very much for your help.

My PC's cpu is Core i7-4790K @ 4.00GHz and its RAM is 32. while running I always check cpu and ram but it just use 13 G of Ram. It has 3 hards (2 SSD +1 HDD) and the space is huge. I checked the internet connection but no matter it is on or off such a thing happens.

I dont know what the problem might be.

Best regards

AtoHM · February 17, 2021, 05:33

Doubt that cfx is causing this, especially with evcelica's hint and RAM not maxed out. Grab a benchmark on the internet and see if your machine can run this properly.

ghorrocks · February 17, 2021, 06:09

And don't forget overheating the CPU is a possibility. That can lead to mysterious PC crashes. Most big name workstations are pretty well designed with big safety margins, but if you have overclocked it or bought a no-name brand you can have problems with CPU heat.

zese · February 19, 2021, 03:27

Thank you all for your help. the problem was the temperature of CPU which was over 90 C so I changed its fan with a better heat sink and it is now working perfectly.

AtoHM · February 19, 2021, 06:20

Nice, now you can carry out a simulation to determine how much more heat your cpu can produce before going back to 90 deg

aero_head · February 19, 2021, 11:32

Quote:

Originally Posted by AtoHM

Nice, now you can carry out a simulation to determine how much more heat your cpu can produce before going back to 90 deg

Thanks for the chuckle

February 16, 2021, 14:46	cfx stops working	#1
zese Senior Member Zese Join Date: Sep 2013 Posts: 106 Rep Power: 14	Dear Friends, I am running a cfx simulation; however, after a while all things on my PC stops working and then I have to turn the PC off to overcome. I didnt have such a problem before. is there anyone have such a problem? Best regards, Zeinab

February 16, 2021, 15:20		#2
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 11	Hello Zeinab, We will need some more information. What are the specs of your PC, how many cores are you using and how heavy (i.e. how many grid-cells) is your computational model? Also, which version of CFX are you using? zese likes this.

February 16, 2021, 15:24		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 18,001 Rep Power: 146	CFX should not crash your entire PC. That suggests something is severely wrong with your PC. Are you sure you are not overheating your CPU? Is your CPU cooling fan working properly? Is there some other software interfering with it (virus checkers are notorious for this)? Is there some network glitch? Opaque, zese, AtoHM and 1 others like this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

February 16, 2021, 16:33		#4
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,196 Rep Power: 24	Perhaps you are using up all your RAM? I have seen PCs become unresponsive when they max out the RAM. zese and aero_head like this.

February 17, 2021, 05:33		#6
AtoHM Senior Member M Join Date: Dec 2017 Posts: 719 Rep Power: 13	Doubt that cfx is causing this, especially with evcelica's hint and RAM not maxed out. Grab a benchmark on the internet and see if your machine can run this properly. zese likes this.

February 17, 2021, 01:27		#5
zese Senior Member Zese Join Date: Sep 2013 Posts: 106 Rep Power: 14	Dear Friends Thanks very much for your help. My PC's cpu is Core i7-4790K @ 4.00GHz and its RAM is 32. while running I always check cpu and ram but it just use 13 G of Ram. It has 3 hards (2 SSD +1 HDD) and the space is huge. I checked the internet connection but no matter it is on or off such a thing happens. I dont know what the problem might be. Best regards

February 17, 2021, 06:09		#7
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 18,001 Rep Power: 146	And don't forget overheating the CPU is a possibility. That can lead to mysterious PC crashes. Most big name workstations are pretty well designed with big safety margins, but if you have overclocked it or bought a no-name brand you can have problems with CPU heat. zese likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

February 19, 2021, 03:27		#8
zese Senior Member Zese Join Date: Sep 2013 Posts: 106 Rep Power: 14	Thank you all for your help. the problem was the temperature of CPU which was over 90 C so I changed its fan with a better heat sink and it is now working perfectly.

February 19, 2021, 06:20		#9
AtoHM Senior Member M Join Date: Dec 2017 Posts: 719 Rep Power: 13	Nice, now you can carry out a simulation to determine how much more heat your cpu can produce before going back to 90 deg aero_head likes this.

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