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Old 11-23-2006, 08:47 AM   #1
ajitup
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Registered: Oct 2004
Location: Indore,India
Distribution: SuSe Linux 10.1 64 bit
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How do I enable 64GB RAM support on Suse 10.1 64bit


Hi!

I have a dual processor server (2 Nos. PIV 3GHz on intel7520 motherboard) with 4GB RAM. "I have created a swap space of 12GB"

When I run any code, my system never uses swap space ( I checked it with "system tools->memory monitor" and "top").

When I run a code with larger memory requirement, the program exits by saying "Insufficient memory"

I thought of recompiling my kernel but could not find the option of enabling "64GB
RAM support
" (as suggested in an article) when I gave the command "make menuconfig" -> Processor types and features->

What is wrong with my kernel?

Is there a way out? to use swap space ???

Please help me!!

thanks,
ajit,
indore, india
 
Old 11-23-2006, 08:53 AM   #2
ajitup
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Registered: Oct 2004
Location: Indore,India
Distribution: SuSe Linux 10.1 64 bit
Posts: 32

Original Poster
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I do not get the option of "High Memory Support" at all...
What is wrong with my kernel?

How to get the option of 64GB support in the menuconfig?

Is there any kernel patch which can help?

Is there a way out? to use swap space ???

Please help me!!

thanks,
ajit,
indore, india
 
Old 11-23-2006, 09:15 AM   #3
bigrigdriver
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Registered: Jul 2002
Location: East Centra Illinois, USA
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If I understand correctly, when RAM space is large enough to handle the job, swap will not be used. It's only when memory requirements are greater than RAM can handle that swap is used.

For larger memory requirements, I beleive you need to install the smp kernel, which should be on the installation cd.
 
Old 11-23-2006, 09:44 PM   #4
ajitup
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Registered: Oct 2004
Location: Indore,India
Distribution: SuSe Linux 10.1 64 bit
Posts: 32

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Hi! bigrigdriver

The job i run requires more memory than the RAM installed in the system. The same job is being run on a similar system with 4GB RAM but does not give the error "Insufficient Memory" and does not exit.

I checked the "top" and "Memory monitor (suse linux)" on the other system and it shows SWAP usage upto 55% but in my case it does not use swap at all and exits giving an error ??

I wish to recomplie kernel with "High Memory Option - 64 GB" but this option does not show in my "make menuconfig"??

any clue?

thanks
ajit
 
Old 11-23-2006, 10:02 PM   #5
bigrigdriver
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In the kernel .config file, it's in the section #Firmware drivers. It reads: # CONFIG_HIGHMEM64G is not set.
 
Old 11-23-2006, 10:18 PM   #6
ajitup
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Registered: Oct 2004
Location: Indore,India
Distribution: SuSe Linux 10.1 64 bit
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Thanks bigrigdriver !

I shall try and report the result

thanks again
ajit
 
  


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