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Questions tagged [opteron]

28 questions
4
votes
1 answer

Hyper-V guests: intermittent latency

I am seeing latency on a Hyper-V host and its guests lately. When I run ping -f from a Linux prompt, I see the dots "pulsate" like a heartbeat indicating 2 successive latency spikes within 1 second followed by about 1-1.5 seconds of "normal"…
the-wabbit
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4
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2 answers

What is the maximum addressable RAM for a process in Linux on 2P Opteron

I'm doing some bioinformatics work where the limitation is amount of memory (i.e., the process is not parallelizable). I see servers like the Dell R715 that have two sockets for Opteron 6100 CPUs and 128GB of RAM possible with 16 x 8GB DIMMs. Each…
jed877
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1 answer

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 MB node 0 free: 381 MB node distances: node 0 …
Wayne Conrad
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1 answer

CPU Throttling on Opteron 6272 in Windows

I'm in the process of attempting to benchmark a multithreaded application on my new HP Proliant Server which has an 2x Opteron 6272 and 64gb of ram. When I run the application on a desktop machine (a range of i7s and a Xeon X5675 processors) the…
vpiTriumph
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2
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2 answers

How to configure Linux for using only one CPU/core of a NUMA system

I'm currently working with an AMD Opteron-based NUMA system. For the needs of my current project, I'd like to make Linux and all of the system processes to utilize only the CPU0 (and preferably, only one of its cores), leaving all other cores for my…
Roman Dmitrienko
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2 answers

6-Core Xeon VS Opteron for virtualization

Which processor gives better price/performance for virtualization environment?
aurimask
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1 answer

Opteron 6274 Cache Differs from Manufacturer's Specs in Windows Server 2016

I just upgraded a DL585 g7 server by replacing its Opteron 6172 CPUs with 4 Opteron 6274 CPUs. Every source I read says that the Opteron 6274s are supposed to have 8x2MB of L2 Cache and 16MB of L3 cache, but Windows Server 2016 says that all four…
C.P.
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1 answer

Upgrading CPU AMD Socket F

I was wondering if it were possible to upgrade an Opteron 2356, to an Opteron 8439SE? Both can use Socket F(r2/Fr5/Fr6), but I'm a little nervous about the quad core to hex core move.... Thank you in advance.
Snow
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vote
1 answer

Comparing 2 servers (Xeon vs Opteron)

I currently rent a server: Intel® Xeon® X3440 Quadcore 4x 2.1 GHz, 16 GB DDR3 ECC Now I have a possibility to get the following server for a cheaper price: AMD Opteron™ 3280 Octo-Core 8x 2.4 GHz, 24 GB DIMM (DDR3) ECC Do you reccomend me to move…
real
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howto fill DIMM slots around xeon 56xx

howto configure memory around the Xeon 56xx CPUs? 2P configuration with 3 channels per CPU How to fill the DIMM slots for optimum memory performance? what is the minimum number of slots to be filled ? dual channel, dual rank etc?
JMS77
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AMD Tctl Margin thresholds don't make sense

I've been having problems with the BMC/IPMI Event Log registering over-temperature errors (in some cases critical) for the CPUs. I am concerned that these are mainly false positives and that the default sensor thresholds set on the BMC are…
Hans
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XEN kernel, CPU missing flags?

I'm using Opteron 6386SE processor, 16 cores. It's capabilites (flags) are here: CPU World But when I run cat /proc/cpuinfo (dom0 or guest), flags are missing, for example SSE3 and SSE4. flags : fpu de tsc msr pae mce cx8 apic mca cmov pat…
kmwil
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CentOS - Raid Speed Below Single Disk

I'm encountering some odd behavior and wondering if anyone has ideas what would be causing it. Setup: 2x 2.4GHz Opteron quad cores, 8GB RAM, 2x 500GB 7200 RPM SATA2 drives, with Clean minimal CentOS 7 install running no workloads (yet) and nothing…
C. Adams
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2 answers

Underclocking/undervolting AMD Opteron Processors to lower TDP rating

How does one safely lower the TDP rating of Opteron CPUs? I am willing to sacrifice some power, but wish to keep stability. Background: I have a TYAN S4985 Motherboard with 4 quad-core Opteron 8380 processors in a very well-ventilated case. I bought…
TimY
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2 answers

Are AMD Opterons more reliable than AMD FX CPUs?

AMD Opteron CPUs are marketed for servers, and FX CPUs for desktops. However, both support ECC, and while only Opterons support registered RAM, the issue is unrelated to reliability. So, what makes Opterons more suitable for servers? Are they more…
MWB
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