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Floating point vs integer calculations on modern hardware

...all of the data can reside in cache, where they can be quickly sent to the CPU. A very, very slow floating point operation that already has the data in cache will be many times faster than an integer operation where an integer needs to be copied from system memory. I assume that you are asking thi...
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How to debug a GLSL shader?

... You can't easily communicate back to the CPU from within GLSL. Using glslDevil or other tools is your best bet. A printf would require trying to get back to the CPU from the GPU running the GLSL code. Instead, you can try pushing ahead to the display. Instead ...
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?

...d that this may very depending on compiler version, optimisation settings, etc). share | improve this answer | follow | ...
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What are the underlying data structures used for Redis?

...p List. Hashes are flattened into a list like [key1, value1, key2, value2] etc. With Zip Lists you have the power to make a tradeoff between CPU and Memory. Zip Lists are memory-efficient, but they use more CPU than a linked list (or Hash table/Skip List). Finding an element in the zip list is O(n)...
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Retrieving the COM class factory for component with CLSID {XXXX} failed due to the following error:

...ced Compile Options...' (at the bottom of the window tab) and then 'Target CPU' (x86) – Rodolfo Jun 27 '11 at 15:56 1 ...
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大单融资后,MOOC去哪儿 - 资讯 - 清泛网 - 专注C/C++及内核技术

...主任蒋健伟表示,“MOOC能有效解决教育资源分配不均的问题,通过校际间的课程互补,提高各所学校的教学能力。” 在MOOC逐渐受到关注的同时,资本也开始发力。2014年12月,果壳网与学堂在线分别获得C轮和A轮融资。据了解,...
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When should I use a table variable vs temporary table in sql server?

...OM master..spt_values v1, master..spt_values v2 SET STATISTICS TIME ON /*CPU time = 7016 ms, elapsed time = 7860 ms.*/ UPDATE @T SET Flag=1; /*CPU time = 6234 ms, elapsed time = 7236 ms.*/ DELETE FROM @T /* CPU time = 828 ms, elapsed time = 1120 ms.*/ UPDATE #T SET Flag=1; /*CPU time = 672 m...
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乐视全员合伙人制的背后 - 资讯 - 清泛网 - 专注C/C++及内核技术

...论证与模型优化才最终成型。 上述人士称,在解决上述问题的过程中,乐视一直坚持了四个原则,就是希望给予员工“最具‘合伙人’精神的激励计划”、“最慷慨的激励额度”、“最彻底的价值分享”以及“最具生态...
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WhatsApp如何成为销售钻戒的店面? - 资讯 - 清泛网 - 专注C/C++及内核技术

...览器(主要针对安卓用户)推出了其应用的桌面版本后,该问题得以解决。 皮瑞安科夫另外有一部手机,专门用于在WhatsApp上与顾客交流,并将其跟三位销售人员的PC相连接。现在,无论他们何时与顾客交流,他们都能让办公室里...
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C++模板的特化 - C/C++ - 清泛网 - 专注C/C++及内核技术

...至于这里怎么都把T2搞没了变成只依赖一个模板参数T了的问题,大家别着急,我来告诉你个本质的东西,把我这么三点就可以了:1.模板参数个数一致;2.只要template <...>里面有东西不是<>,比如typename T,那么特化时就得用到T;3....