# StarPU --- Runtime system for heterogeneous multicore architectures.
#
# Copyright (C) 2020       Université de Bordeaux, CNRS (LaBRI UMR 5800), Inria
#
# StarPU is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or (at
# your option) any later version.
#
# StarPU is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# See the GNU Lesser General Public License in COPYING.LGPL for more details.
#
import starpu
import time
import asyncio
from math import sqrt

#generate a list to store functions
g_func=[]

#function no input no output print hello world
def hello():
	print ("Example 1: Hello, world!")
g_func.append(starpu.joblib.delayed(hello)())

#function no input no output
def func1():
	print ("Example 2: This is a function no input no output")
g_func.append(starpu.joblib.delayed(func1)())

#function no input return a value
def func2():
	print ("Example 3:")
	return 12
g_func.append(starpu.joblib.delayed(func2)())	
 
#function has 2 int inputs and 1 int output
def multi(a,b):
	res_multi=a*b
	print("Example 4: The result of ",a,"*",b,"is",res_multi)
	return res_multi
g_func.append(starpu.joblib.delayed(multi)(2, 3))

#function has 4 float inputs and 1 float output
def add(a,b,c,d):
	res_add=a+b+c+d
	print("Example 5: The result of ",a,"+",b,"+",c,"+",d,"is",res_add)
	return res_add
g_func.append(starpu.joblib.delayed(add)(1.2, 2.5, 3.6, 4.9))

#function has 2 int inputs 1 float input and 1 float output 1 int output
def sub(a,b,c):
	res_sub1=a-b-c
	res_sub2=a-b
	print ("Example 6: The result of ",a,"-",b,"-",c,"is",res_sub1,"and the result of",a,"-",b,"is",res_sub2)
	return res_sub1, res_sub2
g_func.append(starpu.joblib.delayed(sub)(6, 2, 5.9))

print("************************")
print("parallel Normal version:")
print("************************")
print("--input is iterable argument list")
starpu.joblib.parallel(mode="normal", n_jobs=-2)(starpu.joblib.delayed(sqrt)(i**2)for i in range(10))

print("--input is iterable function list")
starpu.joblib.parallel(mode="normal", n_jobs=3)(g_func)


print("************************")
print("parallel Future version:")
print("************************")
async def main():
	print("--input is iterable argument list")
	L_fut1=starpu.joblib.parallel(mode="future", n_jobs=-3)(starpu.joblib.delayed(sqrt)(i**2)for i in range(10))
	res1=[]
	for i in range(len(L_fut1)):
		L_res1=await L_fut1[i]
		res1.extend(L_res1)
	print(res1)

	print("--input is iterable function list")
	L_fut2=starpu.joblib.parallel(mode="future", n_jobs=2)(g_func)
	res2=[]
	for i in range(len(L_fut2)):
		L_res2=await L_fut2[i]
		res2.extend(L_res2)
	print(res2)
asyncio.run(main())