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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
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Marco Bonelli
41.5k1616 gold badges8585 silver badges9999 bronze badges
answered Mar 23 '09 at 15:16
ephemientephemient
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How to get image size (height & width) using JavaScript?
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@RexM On Chrome 35, it’s 16 times faster: jsperf.com/document-getelementbyid-vs-jquery/5
– bfontaine
Aug 12 '14 at 13:52
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How do I add indices to MySQL tables?
...sing an index ?
– Ced
Aug 12 '15 at 16:04
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show 12 more comments
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How do I change the background color of the ActionBar of an ActionBarActivity using XML?
...ll platforms.
– stevyhacker
Jan 28 '16 at 0:15
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Return index of greatest value in an array
...=> arr[i] === max).
– Ry-♦
Apr 16 '19 at 2:27
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Run PostgreSQL queries from the command line
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answered Feb 18 '14 at 16:26
GrantGrant
5,15711 gold badge88 silver badges44 bronze badges
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HTML5 Canvas vs. SVG vs. div
...the page the first time). Chrome's task manager says that tab is taking up 168MB. It takes up 12-13% CPU time when I am looking at it, 0% when I am not looking.
The Canvas tab loaded in one second and takes up 30MB. It also takes up 13% of CPU time all of the time, regardless of whether or not one ...
How do I remove a big file wrongly committed in git [duplicate]
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LeoLeo
4,32822 gold badges1616 silver badges2727 bronze badges
4
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C++0x has no semaphores? How to synchronize threads?
...!count_) loop.
– Dan Nissenbaum
Nov 16 '12 at 7:49
3
@Maxim I'm sorry, I don't think you're right...
Why is MATLAB so fast in matrix multiplication?
...t(@()gA*gA)
ans =
0.0022
Update using R2018b on a WIN64 machine with 16 physical cores and a Tesla V100:
>> timeit(@()A*A)
ans =
0.0229
>> gputimeit(@()gA*gA)
ans =
4.8019e-04
(NB: at some point (I forget when exactly) gpuArray switched from MAGMA to cuBLAS - MAGMA is sti...