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CPU usage in ANSYS

CPU usage in ANSYS

CPU usage in ANSYS

(OP)
I have 3.8 GHz processor with 4 GB RAM and SCSI hard drive with 25 GB empty space computer. But when I do CFD analysis in ANSYS It only use 50% of CPU and less than 2 GB RAM. How to make it use most of the available CPU power and RAM. Page file is set at 8 GB.

I will appreciate any help.

Thanks!

RE: CPU usage in ANSYS

What's your OS?  Which CFD package are you using?

RE: CPU usage in ANSYS

(OP)
I am using Window XP Service Pack 2 and Flotran in ANSYS.

RE: CPU usage in ANSYS

In 32-bit Windows XP, you are not going to be able to have Windows assign more than 2GB of memory (physical or virtual) to any one process (unless you have the /3GB switch turned on when you load the OS).  And, the total amount of memory you can use is 4GB.  These are real limits on the 32-bit operating system.  So, your 8GB page file is useless.

I suspect that the solution is paging to temporary files on the HD, which results in only 50% CPU usage.  There's only one solution (ok - maybe two...) which is use a 64-bit operating system - either Windows or Linux.  Unfortunately, unless your computer is 64-bit capable, this is going to mean new hardware.

Check with your local ASD regarding the availability of 64-bit Flotran in Windows - I use CFX, so I wouldn't know.

Sorry, but your hardware/OS is pretty much max-ed out.

RE: CPU usage in ANSYS

(OP)
Thanks! Seems like I am stuck with this.

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