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Is there a memory limitation in NT?

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Old   May 13, 2002, 05:05
Default Is there a memory limitation in NT?
  #1
Erwin
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Has anybody run models of over 2GB on a NT machine?

I have been told that because of the 32-bit addressing space, Fluent cannot handle problems of over 2^(31) = about 2 GB when running on a Windows NT system.

Would Windows XP solve that problem?
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Old   May 13, 2002, 17:09
Default Re: Is there a memory limitation in NT?
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Jim Clancy
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According my experience with FLUENT on Windows NT platform, I can say: If you are looking for higher memory you should go for LINUX ...Good Luck

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Old   May 13, 2002, 17:10
Default Re: Is there a memory limitation in NT?
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Jim Clancy
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According to my experience with FLUENT on Windows NT platform, I can say: If you are looking for higher memory you should go for LINUX ...Good Luck

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Old   May 13, 2002, 21:25
Default Re: Is there a memory limitation in NT?
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Keil
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Windows XP cannot solve this kind of problem like Windows NT. In my experience, WindowsNT and XP were not good for big calculations. It was very unstable. I recommend Linux,too .

But if you have SMP machine with 4GB memories, FLUENT cluster parallel can use all 4GB memories.

Try "fluent 3d -pnet". Of course you need the licenses.

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Old   May 14, 2002, 04:16
Default Re: Is there a memory limitation in NT?
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Volker Pawlik
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As far as I know the actual LINUX-Distributions have the same limitations as NT, since they are 32-bit systems too. There shall be a 64-bit version in connection with the new IP64 Intel Chip. But I do not know whether fluent already offers a 64-bit Linux-Version.

Hence at the moment the only remedy is to use an UNIX-System which is unfortunately very expensive OR to work only in parallel mode with enough CPUs AND lincenses in order to avoid exceeding the 2 GB limit (with all the difficulties and bugs of the parallel version).
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Old   May 14, 2002, 09:24
Default Re: Is there a memory limitation in NT?
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Erwin
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OK. Thanks guys.
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