Most voted "cpu" questions
CPU, Central Processing Unit (Central Processing Unit), is a computer unit responsible for timing control and information management and processing, in the form of execution of program instructions, manipulation, arithmetic, logical operations, in-memory storage, data collection and sending, and the triggering and control of peripherals.
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viewsWhat is "word" of a CPU
In my Operating Systems class the teacher quoted a term that left me a little confused, which is word of a CPU (Central Processing Unit) and he did not elaborate on the explanation of this term,…
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answer515
viewsWhat differs an FPGA to a CPU?
I was looking at some publications on the BLAKE cryptographic algorithm, which was one of the finalists in the SHA-3 competition, whose winner was Keccak. Finally, in a specific excerpt from the…
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viewsDo the processes executed in parallel relate to the number of Cpus nuclei?
I’m studying the module multiprocessing of Python, in which allow me to run several processes in parallel (in my understanding). As an illustration case let’s see the example below: import time from…
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answer74
viewsHow does CPU cache performance work?
Recently I discovered that it is possible to get a huge performance when using the CPU cache. An example I saw was a program that reduced its runtime from 10 seconds to 200 milliseconds just using…
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answer973
viewsWhy doesn’t Python use 100% of the processor?
I’m developing a Python application where in some parts, it requires a lot of CPU for calculations. However, I realize that even at these "bottleneck" points, the CPU never reaches more than 50% of…
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answer209
viewsIs there a thread, pipeline and core relationship?
Is there any relationship between these elements (thread, pipeline and core of the CPU)? I saw that the pipeline helps a lot when you need to perform many tasks, thus making it easier to harness the…
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answer196
viewsHow to see the cpu usage percentage of each thread of a java process
Well, I have a cpu usage problem, and I don’t know exactly which class or Thread you are consuming ( there’s no way to know externally the code ), I was wondering if you have any method that shows…
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answer95
viewsParallelize with just one core?
I want to parallelize an application, in this case a 'Cosine similarity' calculation, but the machine I am working on has only one core. Parallelizing this calculation with just one core will have…
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answer139
viewsIn the CPU time equation (Tcpu) what are the number of instructions (IC) and cycles per instruction (CPI)?
Of a slide about computer organization: Performance of instructions A particular programme shall require: a number of machine instructions a certain number of cycles a certain number of seconds…
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answer386
viewsWhat do the terms CPU-time Wall-clock-time mean?
Some documentation (programming) refers to these terms when there is some sort of limitation as to the use of the CPU, for example: Background tasks are limited by the amount of time use of…
terminology multithreading functional-programming cpu clockasked 7 years, 6 months ago rubStackOverflow 7,372 -
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answer171
viewsMemory and CPU consumption during a denial of service attack. How to understand statistics?
The following line was on the Ubuntu crontab: */2 * * * * echo -e "`date`\n\n`free` \n\n`vmstat`\n" >> /home/hacker/free_vmstat_output.txt Extract from the free_vmstat_output.txt file two…
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viewsHow to ensure that a code in a Cortex-A is running at maximum CPU frequency
When executing a C code I need to execute every 30ms a set of calculations that transforms an image and that is taking up to 100ms which forces me to discard 3 of every 4 frames that I get. How can…
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viewsWhat does a numeral before an operand inside the parentheses mean?
I’m studying Assembly, and I found codes to work with TFT/LCD displays, and I couldn’t find information on a specific instruction, it moves multiples of a long chain of data loggers to the address…
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answer54
viewsPython Subprocess checking whenever a new file is added
Need: I need to "observe" a directory, every new file inserted in this directory I need to make a copy of this file and forward to an FTP server. What I got: I can upload the file via FTP, and I can…
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answer51
viewsGet full system memory and system components in java
Is there any simple or reliable method to take the total memory of the computer and/or the components or models of the computer components? I did a lot of research and the only thing I found was…