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How do I achieve the theoretical maximum of 4 FLOPs per cycle?

...singly has trouble compiling it well. These are for pre-FMA processors. In order to achieve peak FLOPS on Intel Haswell and AMD Bulldozer processors (and later), FMA (Fused Multiply Add) instructions will be needed. These are beyond the scope of this benchmark. #include <emmintrin.h> #incl...
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How to create a file in memory for user to download, but not through server?

.... If you have a text or CSV file, start the string with '\ufeff', the Byte Order Mark for UTF-16BE, and text editors will be able to read non-ASCII characters correctly. – larspars Nov 19 '14 at 9:06 ...
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CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛,有思想、有深度

... 123456    //设置MySQL密码 #cp support-files/my-medium.cnf /etc/my.cnf #echo "/usr/local/mysql/bin/mysqld_safe &" >>/etc/rc.local 二、安装PCRE          PCRE是perl所用到的正则表达式,目的是让所装的软件支...
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Why does “return list.sort()” return None, not the list?

...e object named -- think of it as an action that the object is taking to re-order itself. The sort function is an operation over the data represented by an object and returns a new object with the same contents in a sorted order. Given a list of integers named l the list itself will be reordered if ...
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MySQL Results as comma separated list

...----------------------------------------+ GROUP_CONCAT with DISTINCT and ORDER BY SELECT GROUP_CONCAT(DISTINCT TaskName ORDER BY TaskName DESC) FROM Tasks; Result: +--------------------------------------------------------+ | GROUP_CONCAT(DISTINCT TaskName ORDER BY TaskName DESC) | +----------...
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Can Python test the membership of multiple values in a list?

...o sets can sometimes be incredibly wasteful, slowing programs down by many orders of magnitude. Here are a few benchmarks for illustration. The biggest difference comes when both container and items are relatively small. In that case, the subset approach is about an order of magnitude faster: >...
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Why is f(i = -1, i = -1) undefined behavior?

I was reading about order of evaluation violations , and they give an example that puzzles me. 11 Answers ...
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How to use bootstrap-theme.css with bootstrap 3?

...e I was. Update bootstrap.css = main css framework (grids, basic styles, etc) bootstrap-theme.css = extended styling (3D buttons, gradients etc). This file is optional and does not effect the functionality of bootstrap at all, it only enhances the appearance. Update 2 With the release of v3.2.0...
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Difference between an application server and a servlet container?

...difference between a full fledged application server (e.g. Weblogic, JBoss etc.) and a servlet container (Tomcat, Jetty etc.). ...
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Difference between `constexpr` and `const`

...id f(); needs to be declared as constexpr void f() const; under C++14 in order to still be usable as a const function. share | improve this answer | follow |...