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Dulmandakh Sukhbaatar posted <20050727075012.79549.qmail@××××××××.mn>, |
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excerpted below, on Wed, 27 Jul 2005 15:50:12 +0800: |
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> Thanks. How can I enable hypertransport in kernel or somewhere? Anyone |
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> knows about NUMA? I read about it, and it seems technology for |
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> multiprocessor systems. Thus I have single CPU, I don't need it. Right? |
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NUMA is indeed for multi-processor systems. NUMA is Non-Uniform Memory |
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Architecture. With AMD CPUs that have the memory controller on the same |
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chip as the CPU, that means that each CPU can control it's own memory. If |
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you run NUMA mode in this case (and if your BIOS is set up accordingly), |
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the kernel will try to keep the memory for each task in the memory handled |
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by, local to, that CPU. If either the kernel or BIOS is set to unified |
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memory, or if you only have memory sticks in the slots for one of the |
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CPUs, then you won't get NUMA mode and the kernel won't care what memory |
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addresses the memory for each process lives at. |
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AFAIK, hypertransport is automatically handled by your choice of chipset. |
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If the chipset you configure has it, it will be enabled, if not, it won't. |
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I was therefore a bit puzzled when you mentioned hypertransport |
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specifically in the previous post, since I don't believe there's a |
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specific kernel option for it. (It's possible, however, that there is and |
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I've just forgotten about it, since it's been awhile since I reviewed |
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the settings for the entire kernel -- I just run make oldconfig and deal |
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with any new options in each newer kernel, and additionally do any |
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specific tweaking I might want to try.) |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman in |
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http://www.linuxdevcenter.com/pub/a/linux/2004/12/22/rms_interview.html |
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-- |
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