cpu

Which part of the computer manages cache replacement?

人走茶凉 提交于 2021-01-29 08:20:40
问题 I haven't found a clear answer: does the control unit itself fetch pre-defined instructions to execute a cache eviction, or does the operating system intervene? If so, how? 回答1: Which part of the computer manages cache replacement? Typically; a cache manages cache replacement itself (its not done by a separate part). There are many types of caches where some are implemented by software (DNS cache, web page cache, file data cache) and some are implemented in hardware (instruction caches, data

Hardware for Deep Learning

随声附和 提交于 2021-01-29 08:12:22
问题 I have a couple questions on hardware for a Deep Learning project I'm starting, I intend to use pyTorch for Neural Networks. I am thinking about going for an 8th Gen CPU on a z390 (I'll wait month to see if prices drop after 9th gen CPU's are available) so I still get a cheaper CPU that can be upgraded later. Question 1) Are CPU cores going to be beneficial would getting the latest Intel chips be worth the extra cores, and if cores on CPU will be helpful, should I just go AMD? I am also

(Batch) “wmic cpu” issue with multi-core system

不问归期 提交于 2021-01-28 09:01:04
问题 I run the "wmic cpu get loadpercentage /every:1" command on a virtual machine with 2 logical CPU cores and I get the LoadPercentage of the 1st core only, as you can see on the image attached: Multicore Issue How can I get the "real" CPU utilization (i.e. the average use of the 2 cores)? Otherwise, how can I also read the 2nd CPU usage separately? Thank you 回答1: It is probably funny that I give an answer to MY question, but since I searched and tested a lot, I want to share one more option: I

Are caches of different level operating in the same frequency domain?

旧城冷巷雨未停 提交于 2021-01-27 18:21:22
问题 Larger caches are usually with longer bitlines or wordlines and thus most likely higher access latency and cycle time. So, does L2 caches work in the same domain as L1 caches? How about L3 cache (slices) since they are now non-inclusive and shared among all the cores? And related questions are: Are all function units in a core in the same clock domain? Are the uncore part all in the same clock domain? Are cores in the multi-core system synchronous? I believe clock domain crossing would

“Pentium-safe FDIV” … in year 2014?

浪尽此生 提交于 2021-01-27 04:13:29
问题 Everytime I look in the compiler settings, the same question comes into my mind: Why does the current compiler of Delphi still have the "Pentium-safe FDIV" compiler option? The Pentium-FDIV-Bug was found in November 1994 and did not occur in CPU models of 1995. Processors at this time were probably only strong enough work with Windows 95, 98 and maybe also Me. As far as I know, the first Intel Pentium 1 CPU with 133 MHz (and therefore fast enough to reach the minimum system requirements of

Unable to get current CPU frequency in Powershell or Python

给你一囗甜甜゛ 提交于 2021-01-23 11:03:10
问题 I am trying to somehow programamtically log the CPU frequency of my windows 10 machine. However I apparently fail to get the current frequency as shown in the task manager. in Powershell, using get-wmiobject Win32_Processor -Property CurrentClockSpeed does only return a clock speed that is exactly the maximum one (even though i can see in task manager that it is not running that high) I even tried this solution: https://www.remkoweijnen.nl/blog/2014/07/18/get-actual-cpu-clock-speed-powershell

Unable to get current CPU frequency in Powershell or Python

Deadly 提交于 2021-01-23 11:01:07
问题 I am trying to somehow programamtically log the CPU frequency of my windows 10 machine. However I apparently fail to get the current frequency as shown in the task manager. in Powershell, using get-wmiobject Win32_Processor -Property CurrentClockSpeed does only return a clock speed that is exactly the maximum one (even though i can see in task manager that it is not running that high) I even tried this solution: https://www.remkoweijnen.nl/blog/2014/07/18/get-actual-cpu-clock-speed-powershell

k8s hpa can't get the cpu information [closed]

半腔热情 提交于 2021-01-22 10:01:36
问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 months ago . Improve this question I set a hpa use command sudo kubectl autoscale deployment e7-build-64 --cpu-percent=50 --min=1 --max=2 -n k8s-demo sudo kubectl get hpa -n k8s-demo NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE e7-build-64 Deployment/e7-build-64 <unknown>/50% 1 2 1 15m sudo

Python - Core Speed [duplicate]

痞子三分冷 提交于 2021-01-22 06:59:53
问题 This question already has answers here : Getting processor information in Python (10 answers) Closed 5 years ago . I'm trying to find out where this value is stored in both windows and osx , in order to do some calculations to make a better task distribution. Core speed in Hz Thanks in advance. Using the platform.process() command only returns the name not the speed I only managed to get it trough this: import subprocess info=subprocess.check_output(["wmic","cpu","get", "name"]) print info

Why aren't out of order CPUs troublesome?

浪尽此生 提交于 2021-01-20 06:02:41
问题 i've recently learned about out-of-order execution CPUs in this link https://en.wikipedia.org/wiki/Out-of-order_execution There is something that i can't quite understand. Why aren't these kind of CPUs troublesome? I mean, if i have instructions executing out of order, even if they apply to different data, wont i be able to reach a situation where data is not updated according to the program order? I mean, if i have something like: x = 1; y = 2; x = x+y; print x; print y; what prevents the