From Wikipedia's entry: A multi-core processor is a single computing component with two or more independent actual processors (called "cores"), which are the units that read and execute program instructions.1 The data in the instruction tells the processor what to do. The instructions are very ...
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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 ...
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0answers
37 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
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1answer
150 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, ...
2
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1answer
65 views
How can I configure Visual Studio 2008, so that it uses multiple cores for compile?
I use Visual Studio 2008 on a bigger project. If some files get compiled, it compiles them one after the other. My computer has 8 cores, except one they are idle. How can I configure Visual Studio, ...
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1answer
76 views
Why does top report more than the theoretical maximum CPU usage of a machine?
I would like to know why I have a process being able to report a usage line like:
PID COMMAND %CPU
248 Xcode 983.5
… in top on a quad core CPU?
I understand it's wrong, but how come? I'm ...
3
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2answers
97 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 ...
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0answers
145 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
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1answer
105 views
What are “multikernel computers”?
Which does the term 'modern multikernel computers' refer to? Distributed systems or multi-core computers?
I saw it in a one-line question, so no context to help! Google didn't help neither.
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1answer
107 views
Is Windows 7 better at utilizing multi-core processors than Windows xp?
Is Windows 7 better at utilizing multi-core processors than Windows xp? Better to have some explanation and proofs with the answer(yes or no).
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2answers
102 views
Does adding core to multicore CPU mean increasing the transistor count? [closed]
I'm studying Moore's law.
I'm curious why many people say Moore's law ends, so we switch to multicore CPU.
From all materials I can find, I understand this by such logic:
increasing clock rate -> ...
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1answer
98 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 ...
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2answers
69 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 ...
34
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5answers
2k 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 ...
6
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5answers
585 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 ...
4
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3answers
542 views
How to make commands in Mathematica 8 use all cores?
Many commands in Mathematica 8 (Integrate, Simplify, etc.) seem to only be using a single core on my system. Is there any way I can change the affinity so that it utilizes all cores for computations?
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1answer
39 views
Binding interface per core
I just wonder, is it possible (using Linux 2.6) to limit overhead done by ethernet interface to one specific core.
Ie. I have core2duo CPU, and two ethernet interfaces: eth0 and eth1.
Is it possible ...
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2answers
319 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 ...
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1answer
68 views
What's a dual core? [closed]
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 ...
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3answers
473 views
How to limit a process to a single CPU core?
How do you limit a single process program run in a Windows environment to run only on a single CPU on a multi-core machine?
Is it the same between a windowed program and a command line program?
...
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0answers
54 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
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1answer
224 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 ...
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2answers
113 views
Controlling multiple screens from Ubuntu 10.04 with many cores
I'm running x64 Ubuntu 10.04, desktop edition. I've got 2 big graphics cards that handle 2 HDMI ports each. I've got 6 cores on processor as well.
I want to be able to show a different movie on each ...
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2answers
813 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
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3answers
181 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 ...
6
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4answers
454 views
Would my virus scanner be able to scan multiple files concurrently with dual CPU instead of multi-core?
Anti-virus: Microsoft Security Essentials
OS : Windows 7 x64
Silly question perhaps, but somehow I was under the impression that multiple cores would mean the anti-virus scanner would be ...
2
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1answer
371 views
Is Firefox 4 multi-core optimized?
I've been reading about Multi-Core support in Firefox. There are outdated https://wiki.mozilla.org/Electrolysis#Status Wiki pages. Which states "Firefox should be Multi-Core aware in 2 years", which ...
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1answer
59 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 ...
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1answer
175 views
What exactly does the AMD Ontario C-50 APU have?
Does it come with two cores at 1 GHz plus a GPU, or is it just two cores and one of them is the GPU?
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1answer
75 views
Why do some software not get load balanced even when there are multiple cores?
While VTune Analyzer was running on a blade server with 8 cores, I observed the cpu useage percentage using mpstat -P ALL 1.
mpstat showed me that VTune was taking up 100% of a single core, while all ...
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5answers
1k views
Can a multi-core processor run multiple processes at the same time?
I understand that a multi-core processor can run multiple threads of the same process at the same time using its different cores.
Can it also run multiple processes at the same time(each core running ...
1
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0answers
460 views
Core i7 vs Phenom II x6 [closed]
I have to made a setup for a PC that's going to be used to do heavy processing with ... Microsoft Excel ( -.-' )
Yep, I know how non-intelligent is make heavy processing with Excel, but I tried to ...
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2answers
679 views
Is there a simple UNIX command for finding out how many cores I have to work with?
I've got an Ubuntu VM on my Mac. Is there a command I can run in Ubuntu that will tell me how many cores I have to work with?
I could do "about this mac" on the host, but I'm not sure how well the ...
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1answer
685 views
Windows Virtual PC, multi-core possible?
I have a PC based on a "Intel i7 975". My OS is "Win7 Ultimate 64bit", and I have installed "Windows Virtual PC" + "XP Mode". My problem is that only ONE core is virtualized, so, can I virtualize two ...
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1answer
441 views
MacBookPro Core i7 - system profiler says “Number of cores: 2”
I thought that "quad core" meant quad core. My system says that it has 2 cores, but perhaps I'm thinking of it wrong, or perhaps the OS ignores 2 cores. What do you know about the issue.
(Note: Intel ...
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2answers
662 views
9
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2answers
4k views
How to tell how many CPUs (cores) you have on Windows 7
I got me a nice new laptop and I want to know a bit more about the hardware.
How can I see how many CPUs my computer has in Windows 7?
(Note: Clicking on Start->Right clicking on Computer-> ...
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3answers
444 views
Multi-core processor speed
Might be a basic question: is the clock rate (1.7 GHz, etc.) that is mentioned for multi-core processors (e.g., Intel i5, i7) the clock rate per core, or it is the total speed of all cores combined?
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2answers
157 views
Usefulness of multi-core in the context of power-efficient computing
I'm considering options for a new portable PC. I'd like to keep power utilization at a minimum, while being able to run batch jobs as quickly as possible. Batch jobs I can generally parallelize ...
2
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1answer
466 views
Processor advertised with 2 cores but PC shows 4 cores
I recently purchased an Intel i5-650 processor. On the Intel site, this the technical specifications show that the processor should only have two cores.
...
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3answers
210 views
When should I activate the “launch folder windows in a separate process” option?
In folder options -> view, there's an option that's off by default called "Launch folder windows in a separate process". I'm on windows-7, but I know this capability has existed since at least windows ...
5
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7answers
2k views
What is the difference between MultiCore and MultiProcessor? [closed]
Possible Duplicate:
What's the difference between multicore proc and multiproc system?
What is the difference between MultiCore and MultiProcessor please?
2
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1answer
102 views
What is the difference between MultiCore and MultiProcessor?
What is the difference between MultiCore and MultiProcessor please?
2
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3answers
362 views
Multiple CPU not showing in task manager
I have an i7 intel core. Normally it shows 8 cpu's in my task manager, however for some strange reason it does not anymore. I can't recall changing anything. I noticed this problem when I wanted to ...
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1answer
2k views
how do I make java.exe use multiple cpu's?
I'm running Hudson on a Windows 7 (x64) machine: this is simply started using 'java -jar hudson.war'. For some reason the java process only uses one cpu, out of 2 available, although it is running ...
3
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1answer
90 views
Which property of CPUs is good for what?
Back in the days clock frequency used to be THE criteria to compare CPUs (or perhaps you had to take into account whether it was a DX or SX). The world was simple back then, but in these fast evolving ...
6
votes
4answers
913 views
How do different Linux distributions handle multiple cores and multi-threading?
I realize that by asking this question I have already labeled myself as "unprepared" for high-performance workstations, but whatever, you have to start somewhere!
I would like to know how different ...
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1answer
902 views
What does clock speed mean in multi-core processors? [closed]
Possible Duplicate:
Clock Speed Calculation in Multicore Processors
If I see a CPU that says "2GHz quad core" on the box, does this mean that each of the four cores are running at 500MHz? ...
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1answer
239 views
Are DPC latency issues improved with multiple cores?
DPC latency checker says
A device driver cannot process data
immediately in its interrupt routine.
It has to schedule a Deferred
Procedure Call (DPC) which basically
is a callback routine ...
12
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4answers
543 views
Does OS allocate each process to a separate core?
Ok I know the classic argument for avoiding quad cores. At the application level, most applications haven't been written for multiple cores. Most desktop software doesn't even need parallelization.
...
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2answers
228 views
PC multi-core architecture, scheduling of cores access to system memory
My office computer has 8 cores. I recently upgraded the system from 4Gb of RAM (in two modules) to 24Gb of RAM (in six modules) and noticed a considerable increase in performance when multiple cores ...
