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What are the differences between a multidimensional array and an array of arrays in C#?
...nal but my guess is that it has to do with some optimalization made on the CPU
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In which order should floats be added to get the most precise result?
...bly avoid using -ffast-math but that in many applications where you may be CPU-bound but don't care about precise numerical computations, (game programming for instance), -ffast-math is reasonable to use. Thus, I'd like to ammend my strongly worded "banned" comment.
– Chris A....
Proper practice for subclassing UIView?
...s. Personally, I avoid multi-pass layouts when possible because they burn CPU cycles and make everything a headache. Additionally, I put constraint code in the initializers themselves as I rarely invalidate them.
import UIKit
class MyView: UIView {
//------------------------------------------...
How does LMAX's disruptor pattern work?
...nd because readers read entries sequentially, this is important to utilize CPU caches.
And lots of efforts to avoid lock, CAS, even memory barrier (e.g. use a non-volatile sequence variable if there's only one writer)
For developers of readers: Different annotating readers should write to differen...
Is R's apply family more than syntactic sugar?
... It does vary with OS and R version... and in an absolute sense CPU. I just ran with 2.15.2 on Mac and got sapply 50% slower than for and lapply twice as fast.
– John
Jan 13 '13 at 0:08
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Java 8: performance of Streams vs Collections
... I think your test is fair, you just need a machine has more cpu cores.
– Mellon
Nov 19 '15 at 19:34
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Why should I not include cpp files and instead use a header?
...ng with a tiny tiny little program, and a nice and relatively unencumbered CPU to compile it for you. You won't always be so lucky.
If you ever delve into the realms of serious computer programming, you'll be seeing projects with line counts that can reach millions, rather than dozens. That's a l...
What's the best way to get the last element of an array without deleting it?
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@DavidMurdoch Perhaps, but it sure does churn the RAM and CPU, creating the temp array for the array values...
– Theodore R. Smith
May 5 '12 at 2:46
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Fastest hash for non-cryptographic uses?
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if you have the benefit/luxury of a newer Intel cpu, there is a crc32c assembly command that is...probably really fast (though isn't the traditional crc32 value). See also xxhash code.google.com/p/xxhash
– rogerdpack
Dec 2 '13 at 20:...
Java 8 Streams: multiple filters vs. complex condition
...arge array 1,000,000 elements throughput ops/s:
NOTE: tests runs on
8 CPU
1 GB RAM
OS version: 16.04.1 LTS (Xenial Xerus)
java version: 1.8.0_121
jvm: -XX:+UseG1GC -server -Xmx1024m -Xms1024m
UPDATE:
Java 11 has some progress on the performance, but the dynamics stay the same
Benchmark mo...