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Bash script to calculate time elapsed
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%[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...
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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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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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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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 ...
Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升
...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...
Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升
...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...
Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升
...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...
Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升
...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...
Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升
...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...