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Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...用Makefile时，有一些我们会经常使用，而且使用频率非常高的东西，比如，我们编译C/C++的源程序为中间目标文件（Unix下是[.o] 文件，Windows下是[.obj]文件）。本章讲述的就是一些在Makefile中的“隐含的”，早先约定了的，不需要...
What is the difference between a thread and a fiber?
.... This also means that the operating system can take advantage of multiple CPUs and CPU cores by running more than one thread at the same time and leaving it up to the developer to guard data access.
With fibers: the current execution path is only interrupted when the fiber yields execution (same n...
Makefile经典教程（入门必备） - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...用Makefile时，有一些我们会经常使用，而且使用频率非常高的东西，比如，我们编译C/C++的源程序为中间目标文件（Unix下是[.o] 文件，Windows下是[.obj]文件）。本章讲述的就是一些在Makefile中的“隐含的”，早先约定了的，不需要...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...sing the cl.exe compier with the /Zp option.
Usually it is easier for the CPU to access data that is a multiple of 4 (or 8), depending platform and also on the compiler.
So it is a matter of alignment basically.
You need to have good reasons to change it.
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Bash script to calculate time elapsed
....
%[p][l]R
The elapsed time in seconds.
%[p][l]U
The number of CPU seconds spent in user mode.
%[p][l]S
The number of CPU seconds spent in system mode.
%P
The CPU percentage, computed as (%U + %S) / %R.
The optional p is a digit specifying the precision, the number of frac...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
...erations (double precision) per cycle be achieved on a modern x86-64 Intel CPU?
4 Answers
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How do function pointers in C work?
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@Rich.Carpenter: function pointers are nice for runtime CPU detection. Have multiple versions of some functions to take advantage of SSE, popcnt, AVX, etc. At startup, set your function pointers to the best version of each function for the current CPU. In your other code, just ...
Measure execution time for a Java method [duplicate]
...ocess(if run locally it will list the java process).Go to sampler, monitor CPU, take a snapshot after metod finishes. and you can get time taken by each method in call tree. its buddled in jvm/jdk.
– arvin_v_s
Jun 21 '17 at 4:13
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Measuring execution time of a function in C++
...ou will not always get the same timing for a function. This is because the CPU of your machine can be less or more used by other processes running on your computer, just as your mind can be more or less concentrated when you solve a math exercise. In the human mind, we can remember the solution of a...
蜘蛛的故事 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...下来，问这只蜘蛛：“你我相见总算是有缘，我来问你个问题，看你修炼了这一千多年来，有什么真知拙见。怎么样？”蜘蛛遇见佛主很是高兴，连忙答应了。佛主问到：“世间什么才是最珍贵的？”蜘蛛想了想，回答到：“世...