Joseph Jennings jojennin

Steps:

In addition to Harvard's fantastic list, we list some other convenient SLURM commands.

Delay an enqueued job from running

Useful for letting other enqueued jobs run without having to kill/re-run already running jobs. To delay for 7 days:

	"""Demo performing parallel tasks with a queue for logging progress."""

	import datetime
	import multiprocessing as mp
	import time
	from collections import namedtuple
	from xml.dom import minidom
	import psutil
	from lxml import etree

	import numpy as np
	from mpi4py import MPI

	rank = MPI.COMM_WORLD.rank

	# create numpy arrays to reduce
	src = (np.arange(8) + rank*8).reshape(4,2)
	dst = np.zeros_like(src)

	def myadd(xmem, ymem, dt):

	/*
	* An efficient MPI parallel reduction without MPI_Scan or MPI_Reduce. (i.e.
	* only send/recv).
	*
	* TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
	* 0. You just DO WHAT THE FUCK YOU WANT TO.
	*/
	#include <mpi.h>
	#include <cstdio>
	#include <vector>