mirror of
https://github.com/triqs/dft_tools
synced 2024-12-25 05:43:40 +01:00
120 lines
3.6 KiB
Python
120 lines
3.6 KiB
Python
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################################################################################
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#
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# TRIQS: a Toolbox for Research in Interacting Quantum Systems
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#
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# Copyright (C) 2011 by M. Ferrero, O. Parcollet
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#
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# TRIQS is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# TRIQS. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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import os,sys,datetime
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myprint_err = lambda x : sys.stderr.write("%s\n"%x)
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myprint_out = lambda x : sys.stdout.write("%s\n"%x)
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from mpi4py import MPI
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world = MPI.COMM_WORLD
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rank = world.Get_rank()
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size = world.Get_size()
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if rank==0 :
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myprint_err ("Starting on %s Nodes at : %s"%(size,str(datetime.datetime.now())))
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master =0
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All_Nodes_report = False #True
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def bcast(x) :
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return world.bcast(x, root=0)
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#return broadcast(world,x,0)
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def send(val,node) :
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world.send(val, dest = node)
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#world.send(node,0,val)
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#print "node ", rank, "has sent ",val, " to node ", node
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def recv(node) :
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r = world.recv(source=0)
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#r = world.recv(node,0)
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#print "node", rank, "receives ", r , "from Node ",node
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return r
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#def irecv(node) :
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# return world.irecv(node,0)
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def barrier() :
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world.barrier()
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# temporary patch
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# need to change the code for all all_reduce to use this layer....
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def all_reduce(WORLD, x, F) :
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return world.allreduce(x)
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Verbosity_Level_Report_Max = 1
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def report(*x,**opt):
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""" print on the master, do nothing on the nodes """
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try :
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if opt['Verbosity_Level'] > Verbosity_Level_Report_Max : return
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except :
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pass
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if All_Nodes_report and rank!=0 :
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for y in x:
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open('report_node%s'%rank,'a').write(str(y) + '\n') # print y
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if rank==0 :
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myprint,myflush = (myprint_err,sys.stderr.flush) if 'stderr' in opt and opt['stderr'] else (myprint_out,sys.stdout.flush)
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for y in x:
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myprint( y) # open('report','a').write(str(y) + '\n') # print y
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myflush() # be sure to flush the buffer!
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def slice_inf(imin,imax) :
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j=(imax - imin + 1)/size
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i= imax - imin + 1 - size*j
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return imin + rank*(j+1) if rank<=i-1 else imin + rank*j + i
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def slice_sup(imin,imax) :
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j=(imax - imin + 1)/size
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i= imax - imin + 1 - size*j;
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return imin + (rank+1)*(j+1) -1 if rank<=i-1 else imin + (rank+1)*j + i - 1
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def slice_array(A) :
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"""Given an array A, it returns a VIEW of a slice over the first dim on the node"""
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imax = A.shape[0]-1
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return A[slice_inf(0,imax):slice_sup(0,imax)+1] # +1 due to the slice convention
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def is_master_node(): return rank == master
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HostNames = {}
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def master_gets_host_names():
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""" find the host name of all the nodes """
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from socket import gethostname
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global HostNames
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HostNames[rank] = gethostname()
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if is_master_node() :
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for proc in range (1,size) :
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HostNames[proc],status = recv(proc)
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else:
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send(gethostname(),master)
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barrier()
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assert len(HostNames)==size," internal pb MPI module"
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if is_master_node() :
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print "Hostnames : "
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for u,host in HostNames.items() :
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print "Node %d on machine %s"%(u,host)
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