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Eliminando el desorden - introducción

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Hemos visto el código desde el punto de vista del compilador, y cómo perfilar código para encontrar las zonas problemáticas. Esta información es buena, pero si aún no está satisfecho con el rendimiento de cierto código, seguro piensa qué más hacer con él. Una posibilidad es que su código sea demasiado obtuso para que el compilador pueda optimizarlo apropiadamente: código excesivo, excesiva modularización o incluso "mejoras" debidas a procesos de optimización previos pueden desordenar su código y confundir a los compiladores. Se considera desorden a todo aquello que contribuye al tiempo de ejecución sin contribuir a la respuesta. Viene en dos formas:

Cosas que contribuyen a la sobrecarga

Llamados a subrutinas, referencias indirectas a memoria, pruebas adentro de bucles, pruebas excesivas, conversiones de tipos, variables preservadas innecesariamente

Cosas que restringen la flexibilidad del compilador

Llamados a subrutinas, referencias indirectas a memoria, pruebas adentro de bucles, apuntadores ambiguos

No se trata de un error que algunos elementos aparezcan repetidos en ambas listas. Tanto la invocación de subrutinas como el uso de sentencias condicionales adentro de bucles pueden perjudicarlo, al tomar mucho tiempo y generar barreras — lugares del programa donde las instrucciones que aparecen antes no pueden entremezclarse de forma segura con las instrucciones que aparecen después, al menos no sin un gran cuidado. El objetivo de este capítulo es mostrarle cómo eliminar el desorden, de forma que pueda reestructurar todo aquello que está mal y lograr la ejecución más rápida posible. Hemos eliminado unos cuantos tópicos que debieran estar aquí, especialmente aquellos relativos a referencias a memoria, y los colocamos en capítulos posteriores donde se tratan como temas separados.

Antes de comenzar, queremos recordarle: conforme busca usted formas de mejorar lo que tiene, mantenga ojos y mente abiertos a la posibilidad de que pueda existir una manera fundamentalmente mejor de hacer algo -una técnica de ordenación más eficiente, un generador de números aleatorios, etc. Un algoritmo diferente puede aportarle mayor incremento de velocidad que afinar el existente. Analizar tales algoritmos está más allá del alcance de este libro, pero lo que estamos discutiendo aquí debe ayudarle a reconocer el "buen" código, o ayudarle a codificar un nuevo algoritmo que le de el mejor rendimiento.

Questions & Answers

what does preconceived mean
sammie Reply
physiological Psychology
Nwosu Reply
How can I develope my cognitive domain
Amanyire Reply
why is communication effective
Dakolo Reply
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
Wekolamo Reply
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Manix Reply
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
JESSY Reply
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
Simon Reply
compare and contrast skinner's perspective on personality development on freud
namakula Reply
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
Amesalu Reply
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
Zyryn Reply
good👍
Jonathan
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
Kelu Reply
interpersonal relationships
Abdulfatai Reply
What would be the best educational aid(s) for gifted kids/savants?
Heidi Reply
treat them normal, if they want help then give them. that will make everyone happy
Saurabh
What are the treatment for autism?
Magret Reply
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities. before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue.. sometimes due to these physical problems..the diagnosis may be misdiagnosed. treatment for autism. well it depends on the severity. since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision. play therapy. speech therapy. Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game. string and beads game. the more you interact with the child the more effective
Jharna
results you'll get.. please consult a therapist to know what suits best on your child. and last as a parent. I know sometimes it's overwhelming to guide a special kid. but trust the process and be strong and patient as a parent.
Jharna
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Source:  OpenStax, Cómputo de alto rendimiento. OpenStax CNX. Sep 02, 2011 Download for free at http://cnx.org/content/col11356/1.2
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