0
votes
0answers
30 views

How to force Grunt tasks to use more CPU cores

I am currently running Ubuntu 12.04.4 LTS and using Grunt along with various contrib packages for my build toolset. Among other things, I am using grunt-contrib-watch to automatically detect file ...
-1
votes
1answer
61 views

One cpu core working harder than the rest

I have seen that with my AMD A8 cpu one of the cores is working harder than the rest. See below: The running processes: Does any one know if this is a problem or just a natural assurance.
0
votes
2answers
55 views

Why a demanding proccess doesn't use another core?

I've got an older Core i5 laptop and I play Dota 2 game sometimes. It's pretty demanding for my processor. But when I quit the game and look in system resources graph (in Taks Manager) and see ...
1
vote
0answers
84 views

Comparing an i7 (3.2Ghz) against an i5 (2.5Ghz) using linpack shows the i7 being worse

I am trying to compare the number crunching performance of an i5-3210M @ 2.5GHz with 6GB ram and an i7 970 @3.2GHz with 24GB ram. The results are so unexpected I presume I am either doing something ...
17
votes
3answers
3k views

Why is my laptop both dual core and quad core at the same time [duplicate]

I bought an Alienwaremx14 with the following specifications , it is clearly stated here that my CPU is dual core However when i open Window task manager , I was shocked to find out I had four CPU ...
0
votes
1answer
15 views

How does multi-core architecture work with regard to parellelism?

I think I am correct in saying that scheduling is the/a main principle of the single core CPU, where the CPU is interrupted when switching from processing one set of instructions belonging to one ...
0
votes
1answer
49 views

Will I see an increase in performance if I use Windows 7 Professional over Home Premium? Regarding multiple physical cores

I have 2 physical cores and Home Premium specs say it only recognizes one but Pro recognizes multiple. If I swap out my Home Premium with Pro will I see an increase in performance? I have an Intel i5 ...
0
votes
4answers
189 views

Why are the number of cores in a processor normally even

Whenever i look at specifications of the processor , the number of cores is always 2 , 4 ,8 . Is there any reasons why the number of cores are always even and not odd like 3 , 5 , 7
1
vote
4answers
501 views

How to find out the total number of virtual core your CPU has

This is the specification of my computer however i have problem finding out how many virtual cores are there in total . I would like to know if there is any command in windows 7 which would help me ...
1
vote
0answers
48 views

How is CPU time measured on Windows?

I am currently creating a program which identifies processes which are hung/out-of-control, and using an entire CPU core. The program then terminates them, so the CPU usage can be kept under control. ...
1
vote
3answers
542 views

Is having more CPU cores a better thing for running a web server?

I was reading about how User threads are mapped to kernel threads on Wikipedia. From this article I understand that FreeBSD uses the 1:1 (Kernel-level threading). So each User thread created by the ...
2
votes
2answers
84 views

Which physical core does the operating system use? [closed]

The operating system needs to be running on one or more physical cores of a multi-core processor, right? Is it possible to identify which those physical cores are using a piece of code?
0
votes
0answers
51 views

Disable 2 cores to meet 95w TDP

I have a Phenom II X4 965 BE CPU on a M5A78L-M LX/BR motherboard. The motherboard supports processors of maximum 95W TDP. The CPU is 125W TDP. So I disabled 2 cores of the CPU trying to avoid the ...
2
votes
1answer
190 views

How to interpret this /proc/cpuinfo data?

I'm using Intel Xeon E5-2620 processor. These are something I'm confusing about. I'm using Linux and in /proc/cpuinfo it says model name : Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz According to the ...
1
vote
1answer
317 views

Does a HyperThreaded Quad Core Processor Actually Have 8 “Cores” [duplicate]

I have an Early 2011 Quad Core i7 Mac. Due to hyperthreading, a lot of programs report 8 "cores". If I were to write a program that executes in parallel, could I kick off 8 instances of this program ...
0
votes
1answer
49 views

Choosing which core to use when running a program

I work on a Fedora server running on an Intel Xeon with 15 cores. Some users are running simulations that take up four of the cores, but others seem to be unused. Is there a way I can have a program ...
0
votes
1answer
115 views

Use all processor cores, 1 core/per 1 thread in *nix

According to xz documentation the "-T 4" means I should be using 4 threads, each compressing a different part of the file simultaneously. Before using nice -19 I would only get %50 usage of 1 core, ...
1
vote
1answer
45 views

Is it possible for Windows not to detect input?

Say you had a decent spec'd computer (running Windows) with a dual core processor but you where pushing it to the limit a bit. Would it be possible for Windows not to detect any input at all for a ...
2
votes
2answers
2k views

How much the CPU clock speed matters over number of cores? [duplicate]

I was comparing various desktop/server processors on Intel's website and found that Xenon Coprocessor family constitutes 61 cores. (firstly, this name lead me to think as if this would be a secondary ...
0
votes
1answer
60 views

Specing out CPUs (more than just cores and clock)

This is not a production question, just something that I've been thinking about. When specing out CPUs I know the general rule is a faster clock speed will make a core run faster and the greater ...
2
votes
2answers
123 views

Are all Socket F Opteron processors interchangeable (within TDP limits)? [closed]

I have an old HP ProLiant DL145 G3 server I'm now using mostly as a budget 3D rendering node. Right now it has two Opteron 2218 processors (each is dual core). I'm looking at picking up a couple ...
3
votes
3answers
2k views

Why does VirtualBox show more CPUs than available?

I have an Intel Core i7 3930K with 6 CPU cores. Now, I understand that every of that cores can handle 2 separate threads. That makes 12 virtual cores - which I can see using my system monitor (see ...
5
votes
4answers
2k views

How do multi-core CPUs work?

I know, vague question title, but my main question is, does 1 core have to execute only one program at a time? Does the "multitasking" at the CPU level work by switching between tasks, and if so, why? ...
1
vote
2answers
206 views

Does the OS exploit multiple cores

I know that more cores isn't always better and that most applications are single threaded however does the OS make use of the additional cores? For example, assume an application such as a dictionary ...
3
votes
2answers
3k views

vmWare Player - virtual machine configured for 2 CPUs but I only have 1 CPU

I copied a virtual machine that I downloaded but can't play it in vmWare player. When I start to play it, it says: This virtual machine is configured to run with 2 CPUs, but the host has only 1 ...
0
votes
1answer
516 views

Core i3 3220 for gaming [closed]

Since the Core i3 3220 has Hyper-Threading, will games like Battlefield 3 see and use the CPU as a virtual "quad core" rather than just 2 physical cores, so that AI and other features in the game run ...
2
votes
1answer
672 views

How do the cores in an AMD Bulldozer module compare to Intel HTT virtual cores and two separate cores, in terms of multitasking performance?

This question is basically an extension of Hyper-Threading and Dual-Core, What's the Difference? The Bulldozer-based AMD FX processors are marketed as having four, six, or eight cores, but ...
1
vote
0answers
322 views

Does VMWare Fusion (5) use logical CPU cores before physical ones?

I have a Intel Core i7 quad core CPU in my Mac Book Pro. The processor supports hyperthreading, so I have 4 physical CPU core and 8 logical ones. Now, when I assign 4 CPU cores to a virtual machine ...
1
vote
3answers
438 views

Will multicore allow the same CPU usage as multi CPU [duplicate]

Possible Duplicate: Multi-core CPU: can I say I have a 3x2.1GHz=6.3GHz CPU? I plan to buy latop with with i5-2410M processor that have 2 cores (according to spec it can also have 4 ...
8
votes
4answers
1k views

Do multi-core CPUs still suffer from diminishing returns in today's world?

It has been shown in other questions that due to the state of computer applications, multi-core processors suffer from diminishing returns. Is this still the case in today's world? Do most new ...
3
votes
2answers
691 views

Terminology used for CPU/Processors

Suppose a system has 4 Intel Xeon processors each having 10 physical cores with HyperThreading enabled which makes a total of 80 cores Now it is completely confusing when in documentation they start ...
2
votes
4answers
3k views

Multi-core CPU: can I say I have a 3x2.1GHz=6.3GHz CPU?

I have an AMD A6-3500 three-core CPU. AMD System Monitor shows each core with a maximum 2100 MHz. This also shows in AMD OverDrive. Does this processor run at the speed 3*2100 MHz? Edit Can I say ...
2
votes
1answer
176 views

How are benchmarks for multiple cores calculated? [closed]

I found this site to compare CPU's. http://www.cpubenchmark.net/high_end_cpus.html What wasn't clear is how the benchmark for multiple core processors is calculated. If one CPU has 4 cores (such as ...
0
votes
2answers
612 views

Finding the number of Cores on my CPU in GNU/Linux

When I do cat /proc/cpuinfo I get the folowing information printed below. Can I conclude from this information that there are 8 cores in my machine? I am interested in doing some parallel programming ...
1
vote
1answer
322 views

shared L2 in multicore: regarding miss per kilo instruction (MPKI) counting

I am using multicore simulator marss http://marss86.org. I am using 4-core simulation, with shared L2 cache. Each core is run for say, 100M instructions. Since different cores progress at different ...
2
votes
2answers
1k views

How do you get more cores?

Are you able to gain cores? I bought The Elder Scrolls V: Skyrim without looking at the specs. I need at least a dual core processor but I only have a single core processor.
2
votes
1answer
1k views

Windows BSOD when all cpu cores enabled

I'm getting a blue screen "A clock interrupt was not received on a secondary processor within the allocated time interval", just a few seconds after the Windows desktop is loaded. (For reference, ...
3
votes
2answers
583 views

How does a multi core computer freeze (at the hardware level)

I have a 4 core i7 computer that freezes. The display stays, but nothing will ever move again. This question is not about getting help on that particular problem, but a general question about how a ...
1
vote
0answers
2k views

Should I prefer processor speed (GHz) or core count? [closed]

I'm currently in the market for a new computer, so I'm curious about the recent trends of processor speed versus core count. Core count seems to be 'all the rage' these days, but things are really ...
2
votes
1answer
1k views

What are “hyperthreading” and “virtual cores”?

I'm new in this computer terms. So anyone can explain to me what "virtual cores" and "hyperthreading" are at greatest detail a layman can understand? People told me that virtual cores are imaginary ...
1
vote
2answers
230 views

Clock frequency, number of cores , threads

I'm really confused. What determines the speed of the CPU/processor? Some compared a dual core with 2.8ghz and a 2.4ghz quad-core and say the quadcore is better. But when it comes to a dual core ...
46
votes
5answers
8k views

Why is my dual-core CPU recognized as a quad-core one?

My processor is an Intel Core i3-380m. As you can see, it's 2 cores and 4 threads. Although, both Ubuntu 11.04 and Windows 7 seem to think it's a quad-core CPU: Why is this? Is it because there ...
13
votes
5answers
13k views

Is a higher core count or higher clock speed more beneficial to a computer's performance? [closed]

With lowering silicon costs and rising consumer needs, manufacturers seem to be pushing one of two things: clock speed and/or core count. With the way things are going, it doesn't seem that clock ...
3
votes
2answers
6k views

/proc/cpuinfo gives CPU info per core or per thread?

My CPU has 2 cores, so I can see two parts in /proc/cpuinfo. But, I want to know if CPUs that support Hyper-Threading (or similar tech), will /proc/cpuinfo give CPU info per core or per thread (or ...
1
vote
1answer
163 views

What's a dual core? [duplicate]

Possible Duplicate: Can someone clear up the terms Core Duo CPU, Quad Core, Dual CPU, etc.? Does "core" mean CPU or memory or both? I'm thinking of buying a new computer. But ...
2
votes
0answers
174 views

Interpreting CPU BenchMark for Multi Core Systems

What is the standard ways (if any) to interpret the results of cpu benchmarking for multicore systems relative to single core systems? I am trying to compare the Passmark result of AMD 64 Vs AMD ...
1
vote
1answer
671 views

Does using a hexacore CPU make sense?

I'm currently planning to upgrade my computer system and I want to exchange CPU, board and RAM. I already had a look at some hexacore-CPUs from AMD and would like to know if it makes any sense to use ...
8
votes
2answers
6k views

Force a single core program to use multi core

The title says it all, is there a way to force a single cpu core designed program (older programs) to use multiple cpu cores?
6
votes
3answers
292 views

Mixing CPUs in a multi-CPU system

Mixing types of RAM is not always healthy, but I am curious as to what happens (if anything) when mixing CPU types in a system. Example: 8-Core 2.0Ghz Magny Cours CPU in socket 0 12-Core 2.0Ghz ...
1
vote
1answer
130 views

Oddity about declared multi-core CPU power?

I am having quite a hard time in understanding the output of cat /proc/cpuinfo on two 4-core Linux boxes here at work. Basically I am running algorithm experiments on the two machines (let's name them ...