DAS_2023_1/antonov_dmitry_lab_5/simple_app.py

import multiprocessing

from flask import Flask, render_template, request
import numpy as np
import concurrent.futures

app = Flask(__name__)


def multiply_matrices(matrix_a, matrix_b):
    if len(matrix_a[0]) != len(matrix_b):
        raise ValueError("матрицы имеют разную длину")

    result = [[0 for _ in range(len(matrix_b[0]))] for _ in range(len(matrix_a))]

    for i in range(len(matrix_a)):
        for j in range(len(matrix_b[0])):
            for k in range(len(matrix_b)):
                result[i][j] += matrix_a[i][k] * matrix_b[k][j]

    return result


def multiply_row(args):
    matrix_a, matrix_b, i = args
    row_result = [0 for _ in range(len(matrix_b[0]))]
    for j in range(len(matrix_b[0])):
        for k in range(len(matrix_b)):
            row_result[j] += matrix_a[i][k] * matrix_b[k][j]
    return row_result, i


def multiply_matrices_parallel(matrix_a, matrix_b, threads):
    if len(matrix_a[0]) != len(matrix_b):
        raise ValueError("матрицы имеют разную длину")

    result = [[0 for _ in range(len(matrix_b[0]))] for _ in range(len(matrix_a))]

    with multiprocessing.Pool(processes=threads) as pool:
        args_list = [(matrix_a, matrix_b, i) for i in range(len(matrix_a))]
        rows_results = pool.map(multiply_row, args_list)

    for row_result, row_index in rows_results:
        result[row_index] = row_result

    return result


@app.route('/')
def index():
    return render_template('index.html')


@app.route('/multiply', methods=['POST'])
def multiply():
    n = int(request.form.get('matrix_a'))
    matrix_a = np.random.randint(10, size=(n, n))
    matrix_b = np.random.randint(10, size=(n, n))

    operation_type = request.form.get('operation_type')

    if operation_type == 'sequential':
        result = multiply_matrices(matrix_a, matrix_b)
    elif operation_type == 'parallel':
        result = multiply_matrices_parallel(matrix_a, matrix_b, 16)
    else:
        return "Invalid operation type"

    return render_template('result.html', matrix_a=matrix_a, matrix_b=matrix_b, result=result)


if __name__ == '__main__':
    app.run(debug=True)