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from mpi4py import MPI
__all__ = ['TypeMap', 'ArrayTypes']
TypeMap = dict(b=MPI.SIGNED_CHAR,
h=MPI.SHORT,
i=MPI.INT,
l=MPI.LONG,
#q=MPI.LONG_LONG,
f=MPI.FLOAT,
d=MPI.DOUBLE)
if MPI.SIGNED_CHAR == MPI.DATATYPE_NULL:
del TypeMap['b']
ArrayTypes = []
try:
import array
except ImportError:
pass
else:
def product(seq):
res = 1
for s in seq:
res = res * s
return res
def mkshape(seq):
return tuple([int(s) for s in seq])
class Array(array.array):
TypeMap = TypeMap
def __new__(cls, arg, typecode, shape=None):
if isinstance(arg, (int, float)):
if shape is None:
shape = ()
elif isinstance(shape, int):
shape = (shape,)
else:
shape = mkshape(shape)
size = product(shape)
arg = [arg] * size
else:
size = len(arg)
if shape is None: shape = (size,)
else: shape = mkshape(shape)
assert size == product(shape)
ary = array.array.__new__(cls, typecode, arg)
ary.shape = shape
ary.size = size
try:
ary.mpidtype = Array.TypeMap[typecode]
except KeyError:
ary.mpidtype = MPI.DATATYPE_NULL
return ary
def flat(self):
return self
flat = property(flat)
def fill(self, value):
self[:] = array.array(self.typecode,
[value]*len(self))
def byteswap(self, inplace=False):
if inplace:
self.byteswap()
else:
ary = Array(list(self), self.typecode, self.shape)
array.array.byteswap(ary)
return ary
def allclose(self, ary, rtol=1.e-5, atol=1.e-8):
for x, y in zip(self, ary):
if abs(x-y) > (atol + rtol * abs(y)):
return False
return True
def max(self):
return max(self)
def min(self):
return min(self)
def sum(self):
return sum(self)
def as_mpi(self):
return (self, self.mpidtype)
def as_mpi_c(self, count):
return (self, count, self.mpidtype)
def as_mpi_v(self, cnt, dsp):
return (self, (cnt, dsp), self.mpidtype)
ArrayTypes.append(Array)
__all__.append('Array')
try:
import numpy
except ImportError:
pass
else:
class NumPy(numpy.ndarray):
TypeMap = TypeMap
def __new__(cls, arg, typecode, shape=None):
if isinstance(arg, (int, float, complex)):
if shape is None: shape = ()
else:
if shape is None: shape = len(arg)
ary = numpy.ndarray.__new__(cls, shape, typecode)
ary.flat[:] = arg
try:
ary.mpidtype = Array.TypeMap[typecode]
except KeyError:
ary.mpidtype = MPI.DATATYPE_NULL
return ary
def typecode(self):
return self.dtype.char
typecode = property(typecode)
def allclose(self, ary, rtol=1.e-5, atol=1.e-8):
return numpy.allclose(self, ary, rtol, atol)
def as_mpi(self):
return (self, self.mpidtype)
def as_mpi_c(self, count):
return (self, count, self.mpidtype)
def as_mpi_v(self, cnt, dsp):
return (self, (cnt, dsp), self.mpidtype)
ArrayTypes.append(NumPy)
__all__.append('NumPy')
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