/**
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* @license
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* Copyright 2017 Google Inc. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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/**
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* Inputs of size above this threshold will be parallelized by calling multiple
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* shader programs.
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*/
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import {nearestDivisor} from '../util';
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export const PARALLELIZE_THRESHOLD = 30;
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export interface ReduceInfo {
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windowSize: number;
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batchSize: number;
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inSize: number;
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}
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export function computeOptimalWindowSize(inSize: number): number {
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if (inSize <= PARALLELIZE_THRESHOLD) {
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return inSize;
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}
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return nearestDivisor(inSize, Math.floor(Math.sqrt(inSize)));
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}
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