Vim li cas peb thiaj ua vectorization?
Vim li cas peb thiaj ua vectorization?

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Video: Vim li cas peb thiaj ua vectorization?
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Vectorization , hauv cov lus yooj yim, txhais tau tias optimizing lub algorithm kom nws ua tau siv SIMD cov lus qhia hauv cov processors. Hauv vectorization peb siv qhov no rau peb kom zoo dua, los ntawm kev hloov kho peb cov ntaub ntawv thiaj li peb tuaj yeem ua tau SIMD ua haujlwm rau nws thiab ua kom qhov kev pab cuam sai.

Ib yam li ib tug yuav nug, vectorization txhais li cas?

Vectorization yog tus txheej txheem ntawm kev hloov ib qho algorithm los ntawm kev khiav hauj lwm ntawm ib qho nqi ntawm ib lub sij hawm mus rau kev khiav hauj lwm ntawm ib txheej ntawm qhov tseem ceeb (vector) ib zaug. Niaj hnub nimno CPUs muab kev txhawb nqa ncaj qha rau kev ua haujlwm vector uas ib qho kev qhia siv rau ntau cov ntaub ntawv (SIMD).

Ib tug kuj yuav nug, dab tsi yog vectorization hauv tshuab kev kawm? Machine Learning piav qhia: Vectorization thiab matrix kev ua haujlwm. Nrog vectorization Cov haujlwm no tuaj yeem pom tau tias yog kev ua haujlwm matrix uas feem ntau ua tau zoo dua li cov qauv voj voog. Vectorized versions ntawm algorithm yog ntau qhov kev txiav txim ntawm qhov loj dua sai dua thiab yooj yim rau kev nkag siab los ntawm kev xav txog lej.

Tib neeg kuj nug, vim li cas vectorization sai dua?

Vectorizing kev khiav hauj lwm (los ntawm unrolling loops los yog, nyob rau hauv ib tug high-level lus, los ntawm kev siv a vectorization tsev qiv ntawv) ua rau nws yooj yim dua rau CPU los txiav txim seb yuav ua li cas nyob rau hauv parallel los yog sib dhos-lined, es tsis ua ib kauj ruam. Vectorized code ua haujlwm ntau dua ib lub voj iteration thiab qhov ntawd yog qhov ua rau nws sai dua.

Dab tsi yog vectorization hauv Python?

Vectorization yog siv los ua kom ceev Python code tsis siv lub voj. Kev siv cov haujlwm zoo li no tuaj yeem pab txo qis lub sijhawm ua haujlwm ntawm cov lej zoo.

Pom zoo: