Questions tagged [multi-core]
A multi-core CPU is a kind of CPU that has two or more actual chips inside it (known as cores). This allows a computer to actually be processing multiple things at once and is often seen as the solution to continuing Moore's law.
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Software using just 2 cores on a 13700 on Windows 10 64, crashing and getting stuck
I've the weirdest problem I ever encountered in my time working with computers :-).
I have music production software which was working fine until suddenly the program mainly started using just 1 or 2 ...
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Bash: execute in parallel some processes but wait the slowest
Hello I'm writing a bash script where I have to restore around 8+ big sets of ip with ipset-restore command.
Actually my shell script basically has a list like
ipset-restore < list1.txt
ipset-...
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Windows only shows 2.33Ghz with 2 cpus, when both cpus are 2.33Ghz each
I have a 2 cpu slot motherboard, each filled with a Intel Xeon E5410, which has 2.33Ghz, and 4 cores. I task manager, it shows 2 cpus, but is only recognising 2.33Ghz, instead of 4.66Ghz (I'm using ...
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Optimizing a mono-CPU application in a docker environment (multi-core vs multi-instances)
I have a simple, CPU-bound, mono-CPU application running in a docker container.
Indeed it fully uses a single CPU on the instance when processing work.
As I understand, there are two main approaches ...
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i7-12700K inexplicably turning off p-cores periodically for long running tasks
I like to run lots of heavy computation on my computer (like factoring large integers and other computational number theory), and my 17-12700K is usually pretty good at it.
But sometimes the task ...
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how to prioritize windows process to WSL tasks?
I have a Windows OS, with a WSL installed. I am running some computation heavy processes in WSL, written in Fortran, submit using nohup, which usually takes 10 hours to complete a task.
I wanted to ...
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Does Hyper-V properly schedule on CPU with Performance and Efficient Cores?
New CPUs (at least in the consumer market) will eventually likely all have the split into performance and efficient cores that Intel has started with the 12000 series.
I have seen some bad/dumb ...
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Why does adding CPU cores make programs run faster?
Intel currently offers a 5.5GHz CPU, which represents the number of instructions the CPU can execute over time.
If a CPU has more than one core, it can execute more than one process at a time.
However,...
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Merge cpu cores for specific program [duplicate]
Minecraft is an old game that was coded to use only one core, which is bad for performance today,
so I was thinking if there is a way to like merge 2 cores for that specific program and make the ...
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Can I reserve one core to system only?
I have a workflow where it sometimes renders my system unresponsive or slow. I deal with that by setting affinity of such demanding apps to only a handful of cores/threads (Core i7).
Now I am looking ...
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Can any program be run on multiple cores? Will the CPU decide that? Or can only certain programs run on multiple cores?
So I'm a little confused about the multicore CPUs - the impression I was initially under and what I thought I heard before was that some programs can't be run across multiple cores - those in which ...
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Why is this single-threaded program using all cpu cores?
I am running a program and the developer of the program, whom I know personally, tells me that the program is completely single-threaded. However, as you can see in the picture below, the program is ...
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Can this Intel processor multi-process 4 or 8 threads?
I am helping a friend who is trying to run multiple threads on a system with an Intel Core i3-3217U processor.
According to Intel's website, that processor has 2 cores which support 4 threads per core(...
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How many physical CPU Cores does Windows support? (Asked in 2021)
How many physical CPU Cores does Windows (amd64, not arm) support?
So with "physical CPU Cores" i mean that a CPU with 4 Cores and Hyperthreading counts as 4 and not 8 Cores. Also with "...
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Find process running in CPU core Win10
I have a multi-core Win10 machine. Some process consumes 100% CPU in a core, while overall CPU consumption remains low.
I can identify the core - but not the process running in it. Need to figure out ...
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Multicore multiprocess performance issue on Linux ARM environment
I am developing a Linux application on 4-core ARM CPU.
There are two processes in the application and I allocated each process to the cpu like below.
core1 : process1 (GUI)
core2-4 : precess2 (...
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How is hyper threading more efficient? [duplicate]
I read a lot about Hyper threading and how it works. One thing I still can't 'digest' is how is it more efficient than not using hyper threading at all?
Hyper-Threading is where two threads are able ...
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Less overall heat? Dual-core vs Quad-core CPU running single-threaded Application
Setting: Multicore-CPU is running an application which is only using one thread.
Assumption: In regards to clockspeed, 2-Core and 4-Core would need the same time to run and both would have the same ...
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1 big core or 4 small cores, which one is better of virtual private servers?
I am trying to find and buy a VPS service. I see some plans like one-3.5GHZ core, dual-2GHZ core, quad-1GHZ core, etc. I like to know which one is better and has more computational power?
What I want ...
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How does cores/logical cores handle the threads [duplicate]
I have this whining question on my head, which stuck me for days.
Correct me if I'm wrong: My aspect on computer architecture and organisation is that,
In early day computers, there was a single ...
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What does it mean [Cores 4] [Logical/Core 2]?
I saw a Processor which states: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz[Cores 4] [Logical/Core 2]
It means it has 4 cores or 2 cores and and logical? I am a bit confused about it.
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Are the Geekbench multicore scores done using embarrassingly parallel processes?
For each processor, the benchmarks at geekbench.com present both a single-core and multi-core score. For example, this 64-core processor has a single-core score of 1220 and a multi-core score of 23688....
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Can you run two operating systems on separate CPU cores without virtualization? [duplicate]
Let's imagine we have a quad-core CPU. Now, I'm wondering if it is possible to run – let's say – Windows on 2 of the cores and Linux on the other 2 cores.
And – before someone marks this as a ...
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Number of processors in a multi-core CPU with hyper-threading
I've been reading What Every Programmer Should Know About Memory by U. Drepper, where they state the following on p. 3:
Red Hat, as of 2007, expects that for
future products, the “standard ...
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Do Multiple Subprocesses Utilize Multiple Cores?
I have a question and it's basically exploring some lazy ways to utilize all the cores on a machine.
Say I have program "./theprogram" which acts on a data set D, is "embarrassingly parallel", and ...
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MKL performance lost when running many independent instances
I'd like to take advantage of 40 physical cores in my 2 * Xeon gold 6230 system with 64GB (2 * 32GB) memory installed. Operating system is Ubuntu 18.04.
The task is solving eigenvalues of random ...
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Can one core perform several operations/instructions during one tick (because core has different execution units)?
A core has its own execution units and load/store buffers (additional "cache" - in addition to L1).
Do those execution units have their own registers? Do cores also have their own dedicated registers?...
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Intel X vs Intel K CPU gaming [closed]
I'm looking to build a PC, and want eight RAM slots. For eight RAM slots, I need to choose motherboards with X-series chipsets, which requires an X-series CPU.
Intel example of K-series CPU: Core i7-...
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Do multi-core processors have internal hardware for randomly changing in which core the instructions are executed?
A friend of mine says that a process always jumps between cores even if you pin a process to a specific core within operating system. He says that the processor manufacturers do this so that the ...
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Has CPU inter-core communication become slower?
I'd be pretty amazed if it had but maybe somebody can help me understand.
I ran SiSoft Sandra Lite 2014's 'Processor Multi-Core Efficiency' test (which returns an 'Inter-Core Bandwidth' value) on my ...