Hi, I don't know if this post is appropriately for this board. (If not, which forum should I post to?) I am wondering if my machine is configured right. My machine equipped with two Intel Xeon E5640 CPUs (each has 4 cores). The red hat version is Red Hat Enterprise 5.5 and linux kernel is 2.6.18-194.el5 My question is when I check /sys/devices/system/node, there is only one node0 directory. The information displayed by "numactl --show" is policy: default preferred node: current physcpubind: 0 1 2 3 4 5 6 7 cpubind: 0 nodebind: 0 membind: 0 Why there is only one node instead of two? Is there any thing wrong with my machine? Also, I found a message in dmesg : No NUMA configuration found Faking a node at 0000000000000000-0000000318000000 What should be a NUMA configuration look like? Another thing I think strange is the BIOS setting. Its default is SMP. When I try to change it to NUMA, I can only see one CPU after re-booting. Is it normal? (the machine model is Dell T5500) It will be very helpful if you can give me some direction. Thanks a lot. David Lin -- To unsubscribe from this list: send the line "unsubscribe linux-numa" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html