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Spark java.lang.OutOfMemoryError: Java heap space

...uch mem you're using) Try using more partitions, you should have 2 - 4 per CPU. IME increasing the number of partitions is often the easiest way to make a program more stable (and often faster). For huge amounts of data you may need way more than 4 per CPU, I've had to use 8000 partitions in some c...
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Why are C character literals ints instead of chars?

...A' from this main memory into a register, which one would you read? Some CPUs may only directly support reading a 16 bit value into a 16 bit register, which would mean a read at 20 or 22 would then require the bits from 'X' be cleared out, and depending on the endianness of the CPU one or other wo...
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Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari

...droid nativly comes with multipe forms to execute code in: RenderScript (CPU and GPU) Java (SDK) C++ (NDK) OpenGL (GPU) It is quite obvious that when executing code the more native the solution the faster it will be. A run-time based language will never beat a language that directly runs on the ...
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How to free memory in Java?

...new in the last six years) G1 collector is a low-pause model; it uses more CPU overall, but does it's best to never force a hard-stop on execution. Since server CPUs now almost all have multiple cores, this is A Really Good Tradeoff to have available. Look at your flags tuning memory use. Especial...
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Can I redirect the stdout in python into some sort of string buffer?

...t)| (default, May 11 2017, 14:07:41) [MSC v.1500 32 bit (Intel)] AMD/Intel CPU? True VML available? True VML/MKL version: Intel(R) Math Kernel Library Version 11.3.1 Product Build 20151021 for 32-bit applications Number of threads used by default: 4 (out of 4 detected cores) -=-=-=-=-=-=-=...
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Difference between wait() and sleep()

... @Geek - why in the world do you say wait() wastes CPU cycles? – Robert Munteanu Jun 24 '09 at 7:04 26 ...
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Is MATLAB OOP slow or am I doing something wrong?

... 1.7.0_11 on PCWIN64 Windows 7 6.1 (eilonwy-win7) Machine: Core i7-3615QM CPU @ 2.30GHz, 4 GB RAM (VMware Virtual Platform) nIters = 100000 Operation Time (µsec) nop() function: 0.14 nop() subfunction: 0.14 @()[] anonymous f...
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When should I use the “strictfp” keyword in java?

...lations need to be deterministic no matter what the underlying hardware or CPU is. What's the trade-off? Most likely execution time. share | improve this answer | follow ...
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CruiseControl.Net 进行持续化集成 - IT产品资讯 - 清泛网 - 专注C/C++及内核技术

...ver服务,在启动之前,需要先解决一下可能最影响情绪的问题:我们知道windows services默认情况下是用本地系统账户运行的,可一般情况下我们会在当前操作用户下设置对vss共享目录的访问权限,比如当前windows运行账户为administra...
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What is the easiest way to remove the first character from a string?

...sk as long as it's easily understood and maintainable and doesn't load the CPU unduly. – the Tin Man Nov 15 '16 at 23:03 ...