Example #8Source File: parallel.py From PyDeepGP with BSD 3-Clause "New" or "Revised" License 5 votes def numpy_to_MPI_typemap(np_type): from mpi4py import MPI typemap = { np.dtype(np.float64) : MPI.DOUBLE, np.dtype(np.float32) : MPI.FLOAT, np.dtype(np.int) : MPI.INT...
bash Copy code pip install mpi4py 2. 编写 Python 脚本 创建一个 Python 脚本，例如mpi_example.py...
BOOST_PYTHON_MODULE(mpi_example){ usingnamespaceboost::python; def("mpi_hello_world",mpi_hello_world); } 编译上述代码为Python模块: g++-shared-fPIC-o mpi_example.so mpi_example.cpp-I/usr/include/python3.x-lboost_python3-lboost_mpi 基本的MPI Hello World示例 在Python中调用刚刚创建的C++模块:...
#dotProductParallel_1.py#"to run" syntax example: mpiexec -n 4 python26 dotProductParallel_1.py 40000frommpi4pyimportMPIimportnumpyimportsys comm=MPI.COMM_WORLD rank=comm.Get_rank() size=comm.Get_size()#read from command line#n = int(sys.argv[1]) #length of vectorsn = 10000#arbitrar...
#trapSerial.py#example to run: python trapSerial.py 0.0 1.0 10000importnumpyimportsysimporttime#takes in command-line arguments [a,b,n]a = float(sys.argv[1]) b= float(sys.argv[2]) n= int(sys.argv[3])deff(x):returnx *xdefintegrateRange(a, b, n):'''Numerically integrate with th...
# dotProductParallel_1.py# "to run" syntax example: mpiexec -n 4 python26 dotProductParallel_1.py 40000from mpi4py import MPIimport numpyimport syscomm = MPI.COMM_WORLDrank = comm.Get_rank()size = comm.Get_size()# read from command line# n = int(sys.argv[1]) #length of vector...
mpiexec-n2python mpi_example.py 1. 这里-n 2表示运行两个进程。 进程间的同步 在MPI中,进程间的同步可以通过集体通信函数来实现,如Barrier。以下是一个示例代码,展示了如何使用Barrier函数实现同步: frommpi4pyimportMPIimporttime comm=MPI.COMM_WORLD ...
This example was contributed by Craig Finch (cfinch@ieee.org). Inspired by http://math.acadiau.ca/ACMMaC/Rmpi/index.html """ from__future__importprint_function frommpi4pyimportMPI defenum(*sequential,**named): """Handy way to fake an enumerated type in Python ...
The Python code is simple: it does not have to deal with launching workers, and it does not have to set up communications between them (inter-process communications, or IPC). The above example showed 20 copies of mpi4.py, all running on the local system. But, if you have two identical...
无意中发现了一个Python下的mpi教程《A Python Introduction to Parallel Programming with MPI 1.0.2 documentation》 地址如下: Communication The Trapezoidal Rule 关于这个梯形规则,推荐资料: trapSerial.py# example to run: python trapSerial.py 0.0 1.0 10000import numpyimport sysimport time#...