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Several of the questions on SO that ask, "Which of these is faster?" or "Why is this faster than the alternative?" have one or more answers which explain the downsides of premature optimization and suggest that the user profile their code to identify ...
Started by cdleary on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
Answers that say "premature optimization is a bad thing, but this is the fastest way" are helpful a good mental model of which avenues....
optimization is a bad thing, they're not really answering the question "which of these is faster and why?".
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Is there other technique like RVO (return value optimization) or NRVO (named return value optimization) that can be use with VC2008?
Started by yesraaj on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
But typically it's the compiler who does such kind of optimization.
Maybe this may help you.
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When said this code need some optimization, or can be some how optimized, what does that mean? which kind of code need optimization? How to apply optimization to the code in c#? What the benefits from that?
Started by Abdullah BaMusa on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
Although "optimization" has the same root as "optimal", the process of optimization does....
In general it implies modifying the system to make some of its aspect responsive in terms of UI .
Optimization is a very broad term.
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Is there a site that provides a great list of common C++ optimization practices?
What I mean by optimization is that you have to modify the source code to be able to run a program faster, not changing the compiler settings.
Started by yoitsfrancis on
, 15 posts
by 15 people.
Answer Snippets (Read the full thread at stackoverflow):
The....
The main benefit comes from #2 above.
In to not only optimization but smart usage of the language so that you will program truly language specific optimization one can do - it is limited to using language constructs (learn from #1).
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Does anyone know of any optimization packages out there for R (similar to NUOPT for S+)?
Thanks
Started by wcm on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Of course, for nonlinear programs, there is optim....
R has many, many packages for optimization; check the CRAN Task view on Optimization: http://cran.r-project.org/web/views/Optimization.html .
Are doing portfolio optimization.
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Does Scala support tail recursion optimization?
Started by Roman Kagan on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Tail-call optimization for self-recursion (a function calling itself) of final methods and local.
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Which languages support tail recursion optimization?
Started by Alexandre Brisebois on
, 12 posts
by 12 people.
Answer Snippets (Read the full thread at stackoverflow):
LOGO supports....
Erlang is another.
64-bit .Net supports tail recursion optimization, but you shouldn't make stack frame.
In languages that provide with tail-recursion.
Iterate with for or while - tail recursion optimization is no help there.
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How do you go about using the return value optimization ?
Is there any cases where I can trust a modern compiler to use the optimization, or should I always go the safe way and return a pointer of some type/use a reference as parameter?
Is there any known...
Started by Viktor Sehr on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
You're right, the optimization is fairly easy for....
See: http://en.wikipedia.org/wiki/Return_value_optimization#Compiler_support
To have the best will perform this optimization as well, at least when optimizations are enabled.
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What is the difference between different optimization levels in GCC? Assuming I don't care to have any debug hooks, why wouldn't I just use the highest level of optimization available to me? does a higher level of optimization necessarily (i.e. provably...
Started by rmukhopadhyay on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Generally optimization levels higher than -O2 (just -O3 for gcc but other compilers have higher vectorization and inter-procedural optimization at levels higher than -O3, as well as certain about the different optimization levels.....
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Hello,
I am new to sql query optimization and i would like to know if there is anyone can suggest a profiling and optimization tool that i can use.
I am trying to optimize queries running on mysql.
Thanks for any help.
Started by andreas on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
You should especially be interested in the columns describing what keys are used, as ... .
This will allow you to see a detailed execution plan for the query .
Well, the first thing one should do is have MySQL describe your queries through the DESC command .
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