Messages in this thread | | | Date | Sat, 08 Dec 2007 03:52:53 +0530 | From | Balbir Singh <> | Subject | Re: [PATCH] Fake NUMA emulation for PowerPC |
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Arnd Bergmann wrote: > On Friday 07 December 2007, Balbir Singh wrote: >> Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake >> NUMA nodes can be specified using the following command line option >> >> numa=fake=<node range> >> >> node range is of the format <range1>,<range2>,...<rangeN> > > Excellent idea! I'd love to have this in RHEL5u1, because that would make > that distro boot on certain machines that have more memory than is supported > without an iommu driver. The problem we have is that when you simply > say mem=1G but all of the first gigabyte is on the first node, you end > up with a memoryless node, which is not supported. > > Unfortunately, it comes too late for me now, as all new distros already boot > on Cell machines that need an IOMMU.
Very interesting use case! I am sure there are others were fake NUMA nodes can be applied. I just listed one other in another email, apart from using it for playing around with NUMA like machines.
-- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL
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