Questions tagged [cpu]
CPU is the abbreviation for central processing unit. Sometimes referred to simply as the central processor, but more commonly called processor
123
questions
-2
votes
1
answer
105
views
What are the CPU architectures for the most common general purpose devices (i.e., Android, Windows/Linux PC, RaspberryPi etc.)? [closed]
Wikipedia lists over 45 different Instruction Set Architectures.
I would bet that most of those are listed for legacy purposes, but I barely have any knowledge on the subject (I'm not even sure if ...
1
vote
4
answers
272
views
Is the maximum number of outstanding load instructions limited by the CPU architecture or the program?
I'm reviewing some lecture slides and had a question on the following slide :
Assumptions (8 clocks to transfer data) Up to 3 outstanding load requests.
The slide is illustrating that the number of ...
- 493
0
votes
2
answers
171
views
Complicated task scheduling architecture
So I want to make an application in which a user will hit an endpoint to save a job model to storage that includes some metadata to perform a long computation against which will be offloaded to a ...
- 101
0
votes
1
answer
685
views
I want my Docker container to use more of the host's CPU resources
I have a DigitalOcean droplet on which I have deployed a Docker container (Docker version: 20.10.14), but my app is sometimes slow, therefore I would like to allocate more resources to it.
The droplet ...
- 243
1
vote
3
answers
522
views
Memory on multiple cores versus 1 core
I am running a program that, among other things, does some matrix multiplications, singular value decompositions and accessing matrix subsets on a very large data set (these are the lines of code that ...
- 19
1
vote
4
answers
2k
views
Memory Alignment
I want to make sure I understand the concept referred to by alignment:
Is it just a way of making sure that you never have a non-integer number of words? The wikipedia page says in order for an access ...
- 19
3
votes
1
answer
250
views
Benchmarking C# code - results
I watch this YouTuber's mostly excellent videos on .NET features (let's call him Nick). He more often than not uses Benchmark.net to demonstrate the differences in performance of different approaches ...
- 18.5k
1
vote
1
answer
96
views
Can we reliably use unaligned scalars on contemporary hardware?
Processors have come a long way in their handling of unaligned data - from crashing at the very notion of it, through suffering severe penalties, all the way to having almost no impact.
I suppose it ...
- 723
33
votes
7
answers
7k
views
Why do modern operating systems *ever* have perceptible input (keyboard/mouse) lag?
Sometimes computers stutter a bit when they're working hard, to the point where the mouse location freezes for a fraction of a second, or stutters intermittently for a few seconds. This sometimes ...
- 449
-2
votes
1
answer
175
views
What is the benefit of equipping a computer or smartphone with multiple CPU cores that differ in clock speed? [closed]
I've bought a samsung galaxy s21 ultra about a year ago. Today i was looking at the specs again and i noticed that the Samsung Exynos 2100 processor consists out of 1 single CPU core of 2.9 GHz, three ...
- 133
-1
votes
2
answers
1k
views
What happens when one thread is waiting to be executed while another is waiting for input?
Suppose I have two threads, A and B. A is waiting for input, while B is waiting to be executed. All other CPU cores are busy with CPU-bound tasks.
What will happen to A?
- 2,063
-5
votes
2
answers
148
views
Archival-quality future-proof pseudo-CPU architecture
Suppose we maintain a massive electronic library of texts/photos/videos etc., and want to ensure that these files are readable indefinitely long in the future. [Update] one of the major problems with ...
2
votes
0
answers
139
views
Branch Prediction: How does a correlative branch predictor select from the global history?
I am trying to understand how branch prediction works, specifically with regards to correlative branch prediction. I understand that in an (m, n) branch predictor, there are m branch predictors, with ...
- 129
0
votes
2
answers
101
views
Efficiency of different Processors and GPUs
My question is, knowing everything there is to know about several systems(CPU and GPU stats, OS), is it possible to approximate when each system will finish a specific processing operation?
And if it ...
- 131
-3
votes
3
answers
387
views
ALU and register relations
Does the ALU have its own memory or registers where it stores input operands etc. or does it only use CPU registers (that aren't only specifically used for ALU tasks)?
- 117