Questions tagged [numa]
Non-Uniform Memory Access is what it stands for. For x86 architectures this is the method used to handle memory architectures where each processor has local memory and accessing another processor's memory is appreciably more expensive.
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HP DL360p with Intel E5-2630 NUMA Capable?
I couldn't find any information via search to determine this via the Intel or HP website. Can you enable NUMA nodes on this? How can you tell the side of each node if so? Is it always best practice to ...
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Unexpected and unexplained slow (and unusual) memory performance with Xeon Skylake SMP
We've been testing a server using 2x Xeon Gold 6154 CPUs with a Supermicro X11DPH-I motherboard, and 96GB RAM, and found some very strange performance issues surrounding memory when compared to ...
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NUMA CPU numbering in Linux
I have access to two NUMA servers. One of them is Dell R720 and has these CPUs:
$ cat /proc/cpuinfo |grep Xeon|sort|uniq -c
24 model name : Intel(R) Xeon(R) CPU E5-2630L v2 @ 2.40GHz
The other ...
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How can I tell if NUMA is enabled on a MongoDB server?
Our mongodb process is consistently using >100% of our CPU (this is on an Ubuntu 64-bit server on Linode) and we're casting about for performance improvements.
One suggestion we found was that ...
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Current single system image solutions
I'm designing a cluster for a small research institute. Since our computations require a large amount of memory, I'm looking for a solution that will allow our applications access to the whole memory ...
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Linux Opteron system appears to be UMA but should be NUMA
According to numactl, this dual CPU Opteron box is UMA rather than the expected NUMA:
$ numactl --hardware
available: 1 nodes (0)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
node 0 size: 65534 ...
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Incorrect # of Free Hugepages in `numastat`
$ numastat -vm
Per-node system memory usage (in MBs):
Node 0 Total
--------------- ---------------
MemTotal 32464.24 32464....