High speed RAM which is used by the computer processor to store often-used operations for the purpose of taking less time to perform large computational tasks

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What happens if the associativity level is greater than the cache size?

I am working on a computer organization caching problem The Problem: What happens if the associativity level is greater than the cache size? I know that associativity level is how many blocks are ...
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2answers
54 views

My L3 cache size showing zero in wmic (cmd)

I purchased a desktop system which has 6 MB Cache. When I checked the L3 cache in the BIOS I didn't find a L3 cache. I the tried to use another method in from the command line to confirm the L3 cache ...
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3answers
2k views

When is CPU cache flushed back to main memory?

If I have a CPU with two cores, each core has it's own L1 cache, is it possible that Core1 and Core2 caches a same part of memory at the same time? If it is possible, what the value of the main memory ...
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0answers
77 views

Missing L1 cache characteristic

I wrote simple program (with help of Igor Ostrovsky's article 'Gallery of Processor Cache Effects') which supposed to examine levels of cache in my processor. According to Coreinfo provided by ...
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4answers
103 views

Is too big cache a bad idea? [duplicate]

I am going to pack a new computer for myself and I thought about Xeon series as main processor. Xeons tend to have very big caches even up to 32MB. And here is a question: Is it a big advantage to ...
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1answer
186 views

In L1, L2 cache and DRAM, is sequential access faster than random access?

In L1, L2 cache and DRAM, is sequential access faster than random access because of the possibility to establish read-ahead? I know in HDDs this is of-course faster in orders of magnitude.
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1answer
104 views

Why is loading chunks of data into the cpu cache an efficient way of processing?

I know that loading instructions into the cache increases the speed of processing overall. Is the answer to the question connected to organization and speed?
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0answers
341 views

Syslogd: hardware error

The machine has been sending these messages to the terminal, paired with beeps from the speaker on the motherboard. These messages appear every 5 minutes, sometimes naming CPU2, sometimes CPU3. ...
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1answer
2k views

Processors cache L1, L2 and L3 are all made of SRAM?

Are Processor caches L1, L2 and L3 all made of SRAM? If true, why L1 is faster than L2 and L2 is faster than L3? I did not understand this part when I read about them.
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ReadyBoost : How a Software Component Helps Boost the System Performance by Exploiting Flash Memory as a Cache?

One of the nice feature of windows 7 for low memory system is ReadyBoost, a software component that uses flash memory as a cache to actually speed up the the performance(Ref-Wikipedia). But If we ...
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1answer
88 views

Is CPU cache (L1 - Ln) equal to TLB

If we are talking about CPU cache. Is Ln synonym for saying 'TLB (translation lookaside buffer) of type Ln' or does Ln include also somethin else than just TLB?
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2answers
4k views

Too much RAM “in cache”

I am having the following problem: I am having a completely new Notebook with 8 GB RAM and Windows 8. I do not use software that requires a lot of RAM and I do not have a thousand programs running. ...
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1answer
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Why is SRAM faster than DRAM?

In modern multi-core processors, the processor caches (L1,L2 and L3) are made up of SRAM with decreasing speeds(L2 caches are higher speed SRAM than L3 caches which is a cost trade-off). The main ...
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0answers
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Back of the envelope calculation for speed of matrix multiplications [closed]

I'm trying to develop an intuition for how feasible/scalable machine learning algorithms are. The dominant cost is always matrix multiplications, but there seem to be no readily Google-able resource ...
2
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1answer
16k views

How can I get to know CPU cache size on Windows 7

WMIC CPU command displays a lot of information about the CPUs on a machine. It only displays the information about L3 cache, is there a way to figure out the size of L1 and L2 caches using a command ...
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2answers
16k views

L2 and L3 Cache Difference?

While I understand that the computer cache is: A CPU cache is a cache used by the central processing unit of a computer to reduce the average time to access memory. The cache is a smaller, faster ...
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1answer
485 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 ...
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5answers
6k views

Is the cache size or number of cores more important when weighing CPU performance?

I'm shopping for a laptop for my son to use for school, so it doesn't need to be a gaming machine. I've put together PC's from scratch before, but it's been a while. I've noticed that a number of ...
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3answers
5k views

L2 Vs. L3 CPU cache speed and performance

In the past few years, looking at Intel CPUs, there has been a move from large size L2 cache to large size L3 cache. A lot of this is due to having more cores on the CPU and wanting to share the cache ...
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6answers
18k views

Where exactly L1, L2 and L3 Caches located in computer?

Where exactly L1, L2 and L3 Caches Located in computer ? I know, we use Cache to increase performance by picking DATA and INSTRUCTIONS from Cache rather than Main Memory. Following are my questions ...
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4answers
478 views

Running programs in cache and registers

In my operating systems class we were shown a picture depicting a hierarchy of memory starting from most expensive and fastest at the top and least expensive and slowest at the bottom. At the very top ...
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4answers
3k views

How do I view the amount of L2 cache in windows?

I know where to find CPU class and speed, and amount of RAM. But I don't see the amount of CPU cache in computer properties or device manager. Does windows (XP currently) provide this information, ...
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4answers
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Can I increase the L2 cache memory of my CPU?

I noticed that my laptop seems to have 4x the amount of "L2 cache memory" than my desktop, is that normal? laptop: Intel Core Duo CPU T2450 @ 2.00GHz, L2 cache memory 2 MB, system bus 533 MHz ...