MPI¶
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class
dolfin.cpp.common.
MPI
(*args)¶ Bases:
object
This class provides utility functions for easy communcation with MPI.
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static
barrier
(*args)¶ Set a barrier (synchronization point)
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static
global_offset
(*args)¶ Find global offset (index) (wrapper for MPI_(Ex)Scan with MPI_SUM as reduction op)
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static
index_owner
(*args)¶ Return which process owns index (inverse of local_range)
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static
is_broadcaster
(*args)¶ Determine whether we should broadcast (based on current parallel policy)
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static
is_receiver
(*args)¶ Determine whether we should receive (based on current parallel policy)
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static
local_range
(*args)¶ Overloaded versions
local_range(N)
Return local range for local process, splitting [0, N - 1] into num_processes() portions of almost equal size
local_range(process, N)
Return local range for given process, splitting [0, N - 1] into num_processes() portions of almost equal size
local_range(process, N, num_processes)
Return local range for given process, splitting [0, N - 1] into num_processes portions of almost equal size
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static
max
(*args)¶ Return global max value
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static
min
(*args)¶ Return global min value
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static
num_processes
(*args)¶ Return number of processes
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static
process_number
(*args)¶ Return proccess number
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static
sum
(*args)¶ Sum values and return sum
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thisown
¶ The membership flag
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static