NUMA Virtual Adress Space / Physical Adress Space

Question

Hello,

I am new in working / coding with NUMA and have a few little questions about that. Please don’t be angry about me if some questions might be silly to you. ^^

 

So, when I work with Processes (might be SAP etc.) on a 128 / 160 Logical Unit – EX machine I work with Affinity Mask to optimize the result. Is there any easy way to see the directly physical addresses on RAM a process needs? Is there generally a way to do this? Can I see what’s behind the Memory Management Unit? To optimize the speed of programs parts shouldn’t allocate RAM which is not on the same node (about 3 – 9 times less fast), but I am not always sure about that and haven’t find a way yet to control this.

 

  I am working with Windows NT 6.1 (2008 R2 SP1 Enterprise)

 

Regards

Answer 1

Hi NUMA Orly

To find out the NUMA node close to physical address or allocate memory close to it. please find these links
    (o) http://social.msdn.microsoft.com/Forums/en-ZA/parallelcppnative/thread/37a02e17-e160-48d9-8625-871ff6b21f72
    (o) http://msdn.microsoft.com/en-us/library/aa965223(VS.85).aspx

To find out statistics on memory usage of a process you can use perfromance counters
    (o) http://technet.microsoft.com/en-us/library/aa997156(EXCHG.65).aspx

Thanks
Ameen

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mameen