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Old 07-24-2007, 09:14 AM   #1
batkinso
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User wants to allocate more than 3Gb memory space in RHel5


I have a server running RHel5 with 4 Gb memory. One of my users is running a program that is failing when it tries to allocate more than 3Gb of memory for the process (he is trying to load large images into his process space).
Is there a way to allow his process to allocate any more memory?

thx
 
Old 07-24-2007, 10:38 AM   #2
jlliagre
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Is you CPU 32 or 64 bit ?
Same question for your O/S.
 
Old 07-24-2007, 10:47 AM   #3
batkinso
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32 bit for both.
 
Old 07-24-2007, 11:21 AM   #4
jlliagre
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Then you are stuck. 32 bit can address at most 4 GB and the Linux kernel reserves 1 GB of it.

By the way, this is unrelated to the installed RAM size. These figures are virtual memory, not physical.

Last edited by jlliagre; 07-24-2007 at 11:22 AM.
 
  


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