def create(file_list,
path,
averagelast=1,
final=-1,
output="./",
informat="nc",
outformat=None):
"""Create restart files from data (dmp) files.
Parameters
----------
averagelast : int, optional
Number of time points (counting from `final`, inclusive) to
average over (default is 1 i.e. just take last time-point)
final : int, optional
The last time point to use (default is last, -1)
path : str, optional
Path to original restart files (default: "data")
output : str, optional
Path to write new restart files (default: current directory)
informat : str, optional
File extension of original files (default: "nc")
outformat : str, optional
File extension of new files (default: use the same as `informat`)
"""
if outformat is None:
outformat = informat
nfiles = len(file_list)
print(("Number of data files: ", nfiles))
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.dmp." + str(i) + "." + informat)
outfname = os.path.join(output,
"BOUT.restart." + str(i) + "." + outformat)
print((infname, " -> ", outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Get the data always needed in restart files
hist_hi = infile.read("iteration")
print(("hist_hi = ", hist_hi))
outfile.write("hist_hi", hist_hi)
t_array = infile.read("t_array")
tt = t_array[final]
print(("tt = ", tt))
outfile.write("tt", tt)
tind = final
if tind < 0.0:
tind = len(t_array) + final
NXPE = infile.read("NXPE")
NYPE = infile.read("NYPE")
print(("NXPE = ", NXPE, " NYPE = ", NYPE))
outfile.write("NXPE", NXPE)
outfile.write("NYPE", NYPE)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 4:
# Could be an evolving variable
print((" -> ", var))
data = infile.read(var)
if averagelast == 1:
slice = data[final, :, :, :]
else:
slice = mean(data[(final - averagelast):final, :, :, :],
axis=0)
print(slice.shape)
outfile.write(var, slice)
infile.close()
outfile.close()
def redistribute(npes,
path="data",
nxpe=None,
output=".",
informat=None,
outformat=None,
mxg=2,
myg=2):
"""Resize restart files across NPES processors.
Does not check if new processor arrangement is compatible with the
branch cuts. In this respect :py:func:`restart.split` is
safer. However, BOUT++ checks the topology during initialisation
anyway so this is not too serious.
Parameters
----------
npes : int
Number of processors for the new restart files
path : str, optional
Path to original restart files (default: "data")
nxpe : int, optional
Number of processors to use in the x-direction (determines
split: npes = nxpe * nype). Default is None which uses the
same algorithm as BoutMesh (but without topology information)
to determine a suitable value for nxpe.
output : str, optional
Location to save new restart files (default: current directory)
informat : str, optional
Specify file format of old restart files (must be a suffix
understood by DataFile, e.g. 'nc'). Default uses the format of
the first 'BOUT.restart.*' file listed by glob.glob.
outformat : str, optional
Specify file format of new restart files (must be a suffix
understood by DataFile, e.g. 'nc'). Default is to use the same
as informat.
Returns
-------
True on success
TODO
----
- Replace printing errors with raising `ValueError`
"""
if npes <= 0:
print("ERROR: Negative or zero number of processors")
return False
if path == output:
print("ERROR: Can't overwrite restart files")
return False
if informat is None:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*"))
else:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
# Read old processor layout
f = DataFile(file_list[0])
# Get list of variables
var_list = f.list()
if len(var_list) == 0:
print("ERROR: No data found")
return False
old_processor_layout = get_processor_layout(f, has_t_dimension=False)
print("Grid sizes: ", old_processor_layout.nx, old_processor_layout.ny,
old_processor_layout.mz)
if nfiles != old_processor_layout.npes:
print("WARNING: Number of restart files inconsistent with NPES")
print("Setting nfiles = " + str(old_processor_layout.npes))
nfiles = old_processor_layout.npes
if nfiles == 0:
print("ERROR: No restart files found")
return False
informat = file_list[0].split(".")[-1]
if outformat is None:
outformat = informat
try:
new_processor_layout = create_processor_layout(old_processor_layout,
npes,
nxpe=nxpe)
except ValueError as e:
print("Could not find valid processor split. " + e.what())
nx = old_processor_layout.nx
ny = old_processor_layout.ny
mz = old_processor_layout.mz
mxg = old_processor_layout.mxg
myg = old_processor_layout.myg
old_npes = old_processor_layout.npes
old_nxpe = old_processor_layout.nxpe
old_nype = old_processor_layout.nype
old_mxsub = old_processor_layout.mxsub
old_mysub = old_processor_layout.mysub
nxpe = new_processor_layout.nxpe
nype = new_processor_layout.nype
mxsub = new_processor_layout.mxsub
mysub = new_processor_layout.mysub
outfile_list = []
for i in range(npes):
outpath = os.path.join(output,
"BOUT.restart." + str(i) + "." + outformat)
outfile_list.append(DataFile(outpath, write=True, create=True))
infile_list = []
for i in range(old_npes):
inpath = os.path.join(path, "BOUT.restart." + str(i) + "." + outformat)
infile_list.append(DataFile(inpath))
for v in var_list:
ndims = f.ndims(v)
# collect data
if ndims == 0:
# scalar
data = f.read(v)
elif ndims == 2:
data = np.zeros((nx + 2 * mxg, ny + 2 * myg))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i / old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe - 1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype - 1:
iyend = 0
data[ix * old_mxsub + ixstart:(ix + 1) * old_mxsub + 2 * mxg +
ixend,
iy * old_mysub + iystart:(iy + 1) * old_mysub + 2 * myg +
iyend] = infile_list[i].read(v)[ixstart:old_mxsub +
2 * mxg + ixend,
iystart:old_mysub +
2 * myg + iyend]
data = BoutArray(data, attributes=infile_list[0].attributes(v))
elif ndims == 3:
data = np.zeros((nx + 2 * mxg, ny + 2 * myg, mz))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i / old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe - 1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype - 1:
iyend = 0
data[ix * old_mxsub + ixstart:(ix + 1) * old_mxsub + 2 * mxg +
ixend,
iy * old_mysub + iystart:(iy + 1) * old_mysub + 2 * myg +
iyend, :] = infile_list[i].read(v)[ixstart:old_mxsub +
2 * mxg + ixend,
iystart:old_mysub +
2 * myg + iyend, :]
data = BoutArray(data, attributes=infile_list[0].attributes(v))
else:
print(
"ERROR: variable found with unexpected number of dimensions,",
ndims, v)
return False
# write data
for i in range(npes):
ix = i % nxpe
iy = int(i / nxpe)
outfile = outfile_list[i]
if v == "NPES":
outfile.write(v, npes)
elif v == "NXPE":
outfile.write(v, nxpe)
elif v == "NYPE":
outfile.write(v, nype)
elif ndims == 0:
# scalar
outfile.write(v, data)
elif ndims == 2:
# Field2D
outfile.write(
v, data[ix * mxsub:(ix + 1) * mxsub + 2 * mxg,
iy * mysub:(iy + 1) * mysub + 2 * myg])
elif ndims == 3:
# Field3D
outfile.write(
v, data[ix * mxsub:(ix + 1) * mxsub + 2 * mxg,
iy * mysub:(iy + 1) * mysub + 2 * myg, :])
else:
print(
"ERROR: variable found with unexpected number of dimensions,",
f.ndims(v))
f.close()
for infile in infile_list:
infile.close()
for outfile in outfile_list:
outfile.close()
return True
def resizeY(newy,
path="data",
output=".",
informat="nc",
outformat=None,
myg=2):
"""Increase the number of Y points in restart files
NOTE:
* Can't overwrite
Parameters
----------
newy : int
ny for the new file
path : str, optional
Path to original restart files (default: "data")
output : str, optional
Path to write new restart files (default: current directory)
informat : str, optional
File extension of original files (default: "nc")
outformat : str, optional
File extension of new files (default: use the same as `informat`)
myg : int, optional
Number of ghost points in y (default: 2)
Returns
-------
True on success, else False
TODO
----
- Replace printing errors with raising `ValueError`
- Make informat work like `redistribute`
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
if nfiles == 0:
print("ERROR: No restart files found")
return False
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.restart." + str(i) + "." + informat)
outfname = os.path.join(output,
"BOUT.restart." + str(i) + "." + outformat)
print("Processing %s -> %s" % (infname, outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Copy basic information
for var in ["hist_hi", "NXPE", "NYPE", "tt"]:
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 3:
# Could be an evolving variable [x,y,z]
print(" -> Resizing " + var)
# Read variable from input
indata = infile.read(var)
nx, ny, nz = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2 * myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2 * myg)
outdata = zeros([nx, newy, nz])
for x in range(nx):
for z in range(nz):
f = interp1d(iny,
indata[x, :, z],
bounds_error=False,
fill_value=0.0)
outdata[x, :, z] = f(outy)
outfile.write(var, outdata)
elif infile.ndims(var) == 2:
# Assume evolving variable [x,y]
print(" -> Resizing " + var)
# Read variable from input
indata = infile.read(var)
nx, ny = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2 * myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2 * myg)
outdata = zeros([nx, newy])
for x in range(nx):
f = interp1d(iny,
indata[x, :],
bounds_error=False,
fill_value=0.0)
outdata[x, :] = f(outy)
outfile.write(var, outdata)
else:
# Copy variable
print(" -> Copying " + var)
# Read variable from input
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
infile.close()
outfile.close()
def resizeY(newy, path="data", output=".", informat="nc", outformat=None, myg=2):
"""
Resize all the restart files in Y
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
if nfiles == 0:
print("ERROR: No restart files found")
return False
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.restart." + str(i) + "." + informat)
outfname = os.path.join(output, "BOUT.restart." + str(i) + "." + outformat)
print("Processing %s -> %s", infname, outfname)
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Copy basic information
for var in ["hist_hi", "NPES", "NXPE", "tt"]:
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 3:
# Could be an evolving variable [x,y,z]
print(" -> " + var)
# Read variable from input
indata = infile.read(var)
nx, ny, nz = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2 * myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2 * myg)
outdata = zeros([nx, newy, nz])
for x in range(nx):
for z in range(nz):
f = interp1d(iny, indata[x, :, z], bounds_error=False, fill_value=0.0)
outdata[x, :, z] = f(outy)
outfile.write(var, outdata)
infile.close()
outfile.close()
def slice(infile, outfile, region=None, xind=None, yind=None):
"""Copy an X-Y slice from one DataFile to another
Parameters
----------
infile : str
Name of DataFile to read slice from
outfile : str
Name of DataFile to write slice to. File will be created, and
will be overwritten if it already exists
region : {0, 1, 2, 3, 4, 5, None}, optional
Copy a whole region. The available regions are:
- 0: Lower inner leg
- 1: Inner core
- 2: Upper inner leg
- 3: Upper outer leg
- 4: Outer core
- 5: Lower outer leg
xind, yind : (int, int), optional
Index ranges for x and y. Range includes first point, but not
last point
TODO
----
- Rename to not clobber builtin `slice`
- Better regions?
"""
# Open input and output files
indf = DataFile(infile)
outdf = DataFile(outfile, create=True)
nx = indf["nx"][0]
ny = indf["ny"][0]
if region:
# Select a region of the mesh
xind = [0, nx]
if region == 0:
# Lower inner leg
yind = [0, indf["jyseps1_1"][0] + 1]
elif region == 1:
# Inner core
yind = [indf["jyseps1_1"][0] + 1, indf["jyseps2_1"][0] + 1]
elif region == 2:
# Upper inner leg
yind = [indf["jyseps2_1"][0] + 1, indf["ny_inner"][0]]
elif region == 3:
# Upper outer leg
yind = [indf["ny_inner"][0], indf["jyseps1_2"][0] + 1]
elif region == 4:
# Outer core
yind = [indf["jyseps1_2"][0] + 1, indf["jyseps2_2"][0] + 1]
else:
# Lower outer leg
yind = [indf["jyseps2_2"][0] + 1, ny]
else:
# Use indices
if not xind:
xind = [0, nx]
if not yind:
yind = [0, ny]
print("Indices: [%d:%d, %d:%d]" % (xind[0], xind[1], yind[0], yind[1]))
# List of variables requiring special handling
special = [
"nx",
"ny",
"ny_inner",
"ixseps1",
"ixseps2",
"jyseps1_1",
"jyseps1_2",
"jyseps2_1",
"jyseps2_2",
"ShiftAngle",
]
outdf["nx"] = xind[1] - xind[0]
outdf["ny"] = yind[1] - yind[0]
outdf["ny_inner"] = indf["ny_inner"][0] - yind[0]
outdf["ixseps1"] = indf["ixseps1"][0]
outdf["ixseps2"] = indf["ixseps2"][0]
outdf["jyseps1_1"] = indf["jyseps1_1"][0] - yind[0]
outdf["jyseps2_1"] = indf["jyseps2_1"][0] - yind[0]
outdf["jyseps1_2"] = indf["jyseps1_2"][0] - yind[0]
outdf["jyseps2_2"] = indf["jyseps2_2"][0] - yind[0]
outdf["ShiftAngle"] = indf["ShiftAngle"][xind[0]:xind[1]]
# Loop over all variables
for v in list(indf.keys()):
if v in special:
continue # Skip these variables
ndims = indf.ndims(v)
if ndims == 0:
# Copy scalars
print("Copying variable: " + v)
outdf[v] = indf[v][0]
elif ndims == 2:
# Assume [x,y]
print("Slicing variable: " + v)
outdf[v] = indf[v][xind[0]:xind[1], yind[0]:yind[1]]
else:
# Skip
print("Skipping variable: " + v)
indf.close()
outdf.close()
def slice(infile, outfile, region = None, xind=None, yind=None):
"""
xind, yind - index ranges. Range includes first point, but not last point
"""
# Open input and output files
indf = DataFile(infile)
outdf = DataFile(outfile, create=True)
nx = indf["nx"][0]
ny = indf["ny"][0]
if region:
# Select a region of the mesh
xind = [0, nx]
if region == 0:
# Lower inner leg
yind = [0, indf["jyseps1_1"][0]+1]
elif region == 1:
# Inner core
yind = [indf["jyseps1_1"][0]+1, indf["jyseps2_1"][0]+1]
elif region == 2:
# Upper inner leg
yind = [indf["jyseps2_1"][0]+1, indf["ny_inner"][0]]
elif region == 3:
# Upper outer leg
yind = [indf["ny_inner"][0], indf["jyseps1_2"][0]+1]
elif region == 4:
# Outer core
yind = [indf["jyseps1_2"][0]+1, indf["jyseps2_2"][0]+1]
else:
# Lower outer leg
yind = [indf["jyseps2_2"][0]+1, ny]
else:
# Use indices
if not xind:
xind = [0, nx]
if not yind:
yind = [0, ny]
print("Indices: [%d:%d, %d:%d]" % (xind[0], xind[1], yind[0], yind[1]))
# List of variables requiring special handling
special = ["nx", "ny", "ny_inner",
"ixseps1", "ixseps2",
"jyseps1_1", "jyseps1_2", "jyseps2_1", "jyseps2_2",
"ShiftAngle"]
outdf["nx"] = xind[1] - xind[0]
outdf["ny"] = yind[1] - yind[0]
outdf["ny_inner"] = indf["ny_inner"][0] - yind[0]
outdf["ixseps1"] = indf["ixseps1"][0]
outdf["ixseps2"] = indf["ixseps2"][0]
outdf["jyseps1_1"] = indf["jyseps1_1"][0] - yind[0]
outdf["jyseps2_1"] = indf["jyseps2_1"][0] - yind[0]
outdf["jyseps1_2"] = indf["jyseps1_2"][0] - yind[0]
outdf["jyseps2_2"] = indf["jyseps2_2"][0] - yind[0]
outdf["ShiftAngle"] = indf["ShiftAngle"][xind[0]:xind[1]]
# Loop over all variables
for v in list(indf.keys()):
if v in special:
continue # Skip these variables
ndims = indf.ndims(v)
if ndims == 0:
# Copy scalars
print("Copying variable: " + v)
outdf[v] = indf[v][0]
elif ndims == 2:
# Assume [x,y]
print("Slicing variable: " + v);
outdf[v] = indf[v][xind[0]:xind[1], yind[0]:yind[1]]
else:
# Skip
print("Skipping variable: " + v)
indf.close()
outdf.close()
def create(averagelast=1, final=-1, path="data", output="./", informat="nc", outformat=None):
"""Create restart files from data (dmp) files.
Parameters
----------
averagelast : int, optional
Number of time points (counting from `final`, inclusive) to
average over (default is 1 i.e. just take last time-point)
final : int, optional
The last time point to use (default is last, -1)
path : str, optional
Path to original restart files (default: "data")
output : str, optional
Path to write new restart files (default: current directory)
informat : str, optional
File extension of original files (default: "nc")
outformat : str, optional
File extension of new files (default: use the same as `informat`)
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.dmp.*."+informat))
nfiles = len(file_list)
print(("Number of data files: ", nfiles))
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.dmp."+str(i)+"."+informat)
outfname = os.path.join(output, "BOUT.restart."+str(i)+"."+outformat)
print((infname, " -> ", outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Get the data always needed in restart files
hist_hi = infile.read("iteration")
print(("hist_hi = ", hist_hi))
outfile.write("hist_hi", hist_hi)
t_array = infile.read("t_array")
tt = t_array[final]
print(("tt = ", tt))
outfile.write("tt", tt)
tind = final
if tind < 0.0:
tind = len(t_array) + final
NXPE = infile.read("NXPE")
NYPE = infile.read("NYPE")
print(("NXPE = ", NXPE, " NYPE = ", NYPE))
outfile.write("NXPE", NXPE)
outfile.write("NYPE", NYPE)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 4:
# Could be an evolving variable
print((" -> ", var))
data = infile.read(var)
if averagelast == 1:
slice = data[final, :, :, :]
else:
slice = mean(data[(final - averagelast)
:final, :, :, :], axis=0)
print(slice.shape)
outfile.write(var, slice)
infile.close()
outfile.close()
def resizeY(newy,
path="data",
output=".",
informat="nc",
outformat=None,
myg=2):
"""
Resize all the restart files in Y
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
if nfiles == 0:
print("ERROR: No restart files found")
return False
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.restart." + str(i) + "." + informat)
outfname = os.path.join(output,
"BOUT.restart." + str(i) + "." + outformat)
print("Processing %s -> %s" % (infname, outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Copy basic information
for var in ["hist_hi", "NPES", "NXPE", "tt"]:
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 3:
# Could be an evolving variable [x,y,z]
print(" -> Resizing " + var)
# Read variable from input
indata = infile.read(var)
nx, ny, nz = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2 * myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2 * myg)
outdata = zeros([nx, newy, nz])
for x in range(nx):
for z in range(nz):
f = interp1d(iny,
indata[x, :, z],
bounds_error=False,
fill_value=0.0)
outdata[x, :, z] = f(outy)
outfile.write(var, outdata)
elif infile.ndims(var) == 2:
# Assume evolving variable [x,y]
print(" -> Resizing " + var)
# Read variable from input
indata = infile.read(var)
nx, ny = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2 * myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2 * myg)
outdata = zeros([nx, newy])
for x in range(nx):
f = interp1d(iny,
indata[x, :],
bounds_error=False,
fill_value=0.0)
outdata[x, :] = f(outy)
outfile.write(var, outdata)
else:
# Copy variable
print(" -> Copying " + var)
# Read variable from input
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
infile.close()
outfile.close()
def split(nxpe, nype, path="data", output="./", informat="nc", outformat=None):
"""Split restart files across NXPE x NYPE processors.
Returns True on success
"""
if outformat is None:
outformat = informat
mxg = 2
myg = 2
npes = nxpe * nype
if npes <= 0:
print("ERROR: Negative or zero number of processors")
return False
if path == output:
print("ERROR: Can't overwrite restart files")
return False
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
if nfiles == 0:
print("ERROR: No restart files found")
return False
# Read old processor layout
f = DataFile(os.path.join(path, file_list[0]))
# Get list of variables
var_list = f.list()
if len(var_list) == 0:
print("ERROR: No data found")
return False
old_npes = f.read("NPES")
old_nxpe = f.read("NXPE")
if nfiles != old_npes:
print("WARNING: Number of restart files inconsistent with NPES")
print("Setting nfiles = " + str(old_npes))
nfiles = old_npes
if old_npes % old_nxpe != 0:
print("ERROR: Old NPES is not a multiple of old NXPE")
return False
old_nype = int(old_npes / old_nxpe)
if nype % old_nype != 0:
print("SORRY: New nype must be a multiple of old nype")
return False
if nxpe % old_nxpe != 0:
print("SORRY: New nxpe must be a multiple of old nxpe")
return False
# Get dimension sizes
old_mxsub = 0
old_mysub = 0
mz = 0
for v in var_list:
if f.ndims(v) == 3:
s = f.size(v)
old_mxsub = s[0] - 2 * mxg
old_mysub = s[1] - 2 * myg
mz = s[2]
break
f.close()
# Calculate total size of the grid
nx = old_mxsub * old_nxpe
ny = old_mysub * old_nype
print(("Grid sizes: ", nx, ny, mz))
# Create the new restart files
for mype in range(npes):
# Calculate X and Y processor numbers
pex = mype % nxpe
pey = int(mype / nxpe)
old_pex = int(pex / xs)
old_pey = int(pey / ys)
old_x = pex % xs
old_y = pey % ys
# Old restart file number
old_mype = old_nxpe * old_pey + old_pex
# Calculate indices in old restart file
xmin = old_x * mxsub
xmax = xmin + mxsub - 1 + 2 * mxg
ymin = old_y * mysub
ymax = ymin + mysub - 1 + 2 * myg
print("New: " + str(mype) + " (" + str(pex) + ", " + str(pey) + ")")
print(
" => "
+ str(old_mype)
+ " ("
+ str(old_pex)
+ ", "
+ str(old_pey)
+ ") : ("
+ str(old_x)
+ ", "
+ str(old_y)
+ ")"
)
def create(averagelast=1,
final=-1,
path="data",
output="./",
informat="nc",
outformat=None):
"""
Create restart files from data (dmp) files.
Inputs
======
averagelast Number of time points to average over.
Default is 1 i.e. just take last time-point
final The last time point to use. Default is last (-1)
path Path to the input data files
output Path where the output restart files should go
informat Format of the input data files
outformat Format of the output restart files
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.dmp.*." + informat))
nfiles = len(file_list)
print(("Number of data files: ", nfiles))
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.dmp." + str(i) + "." + informat)
outfname = os.path.join(output,
"BOUT.restart." + str(i) + "." + outformat)
print((infname, " -> ", outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Get the data always needed in restart files
hist_hi = infile.read("iteration")
print(("hist_hi = ", hist_hi))
outfile.write("hist_hi", hist_hi)
t_array = infile.read("t_array")
tt = t_array[final]
print(("tt = ", tt))
outfile.write("tt", tt)
tind = final
if tind < 0.0:
tind = len(t_array) + final
NXPE = infile.read("NXPE")
NYPE = infile.read("NYPE")
NPES = NXPE * NYPE
print(("NPES = ", NPES, " NXPE = ", NXPE))
outfile.write("NPES", NPES)
outfile.write("NXPE", NXPE)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 4:
# Could be an evolving variable
print((" -> ", var))
data = infile.read(var)
if averagelast == 1:
slice = data[final, :, :, :]
else:
slice = mean(data[(final - averagelast):final, :, :, :],
axis=0)
print(slice.shape)
outfile.write(var, slice)
infile.close()
outfile.close()
def redistribute(npes,
path="data",
nxpe=None,
output=".",
informat=None,
outformat=None,
mxg=2,
myg=2):
"""Resize restart files across NPES processors.
Does not check if new processor arrangement is compatible with the branch cuts. In this respect restart.split is safer. However, BOUT++ checks the topology during initialisation anyway so this is not too serious.
Parameters
----------
npes : int
number of processors for the new restart files
path : string, optional
location of old restart files
nxpe : int, optional
number of processors to use in the x-direction (determines split: npes = nxpe * nype). Default is None which uses the same algorithm as BoutMesh (but without topology information) to determine a suitable value for nxpe.
output : string, optional
location to save new restart files
informat : string, optional
specify file format of old restart files (must be a suffix understood by DataFile, e.g. 'nc'). Default uses the format of the first 'BOUT.restart.*' file listed by glob.glob.
outformat : string, optional
specify file format of new restart files (must be a suffix understood by DataFile, e.g. 'nc'). Default is to use the same as informat.
Returns
-------
True on success
"""
if npes <= 0:
print("ERROR: Negative or zero number of processors")
return False
if path == output:
print("ERROR: Can't overwrite restart files")
return False
if informat is None:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*"))
else:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
# Read old processor layout
f = DataFile(file_list[0])
# Get list of variables
var_list = f.list()
if len(var_list) == 0:
print("ERROR: No data found")
return False
old_npes = f.read('NPES')
old_nxpe = f.read('NXPE')
old_nype = int(old_npes / old_nxpe)
if nfiles != old_npes:
print("WARNING: Number of restart files inconsistent with NPES")
print("Setting nfiles = " + str(old_npes))
nfiles = old_npes
if nfiles == 0:
print("ERROR: No restart files found")
return False
informat = file_list[0].split(".")[-1]
if outformat is None:
outformat = informat
old_mxsub = 0
old_mysub = 0
mz = 0
for v in var_list:
if f.ndims(v) == 3:
s = f.size(v)
old_mxsub = s[0] - 2 * mxg
if old_mxsub < 0:
if s[0] == 1:
old_mxsub = 1
mxg = 0
elif s[0] == 3:
old_mxsub = 1
mxg = 1
else:
print("Number of x points is wrong?")
return False
old_mysub = s[1] - 2 * myg
if old_mysub < 0:
if s[1] == 1:
old_mysub = 1
myg = 0
elif s[1] == 3:
old_mysub = 1
myg = 1
else:
print("Number of y points is wrong?")
return False
mz = s[2]
break
# Calculate total size of the grid
nx = old_mxsub * old_nxpe
ny = old_mysub * old_nype
print("Grid sizes: ", nx, ny, mz)
if nxpe is None: # Copy algorithm from BoutMesh for selecting nxpe
ideal = sqrt(float(nx) * float(npes) /
float(ny)) # Results in square domain
for i in range(1, npes + 1):
if npes % i == 0 and nx % i == 0 and int(
nx / i) >= mxg and ny % (npes / i) == 0:
# Found an acceptable value
# Warning: does not check branch cuts!
if nxpe is None or abs(ideal - i) < abs(ideal - nxpe):
nxpe = i # Keep value nearest to the ideal
if nxpe is None:
print("ERROR: could not find a valid value for nxpe")
return False
nype = int(npes / nxpe)
outfile_list = []
for i in range(npes):
outpath = os.path.join(output,
"BOUT.restart." + str(i) + "." + outformat)
outfile_list.append(DataFile(outpath, write=True, create=True))
infile_list = []
for i in range(old_npes):
inpath = os.path.join(path, "BOUT.restart." + str(i) + "." + outformat)
infile_list.append(DataFile(inpath))
old_mxsub = int(nx / old_nxpe)
old_mysub = int(ny / old_nype)
mxsub = int(nx / nxpe)
mysub = int(ny / nype)
for v in var_list:
ndims = f.ndims(v)
#collect data
if ndims == 0:
#scalar
data = f.read(v)
elif ndims == 2:
data = np.zeros((nx + 2 * mxg, ny + 2 * myg))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i / old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe - 1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype - 1:
iyend = 0
data[ix * old_mxsub + ixstart:(ix + 1) * old_mxsub + 2 * mxg +
ixend,
iy * old_mysub + iystart:(iy + 1) * old_mysub + 2 * myg +
iyend] = infile_list[i].read(v)[ixstart:old_mxsub +
2 * mxg + ixend,
iystart:old_mysub +
2 * myg + iyend]
elif ndims == 3:
data = np.zeros((nx + 2 * mxg, ny + 2 * myg, mz))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i / old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe - 1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype - 1:
iyend = 0
data[ix * old_mxsub + ixstart:(ix + 1) * old_mxsub + 2 * mxg +
ixend,
iy * old_mysub + iystart:(iy + 1) * old_mysub + 2 * myg +
iyend, :] = infile_list[i].read(v)[ixstart:old_mxsub +
2 * mxg + ixend,
iystart:old_mysub +
2 * myg + iyend, :]
else:
print(
"ERROR: variable found with unexpected number of dimensions,",
ndims, v)
return False
# write data
for i in range(npes):
ix = i % nxpe
iy = int(i / nxpe)
outfile = outfile_list[i]
if v == "NPES":
outfile.write(v, npes)
elif v == "NXPE":
outfile.write(v, nxpe)
elif ndims == 0:
# scalar
outfile.write(v, data)
elif ndims == 2:
# Field2D
outfile.write(
v, data[ix * mxsub:(ix + 1) * mxsub + 2 * mxg,
iy * mysub:(iy + 1) * mysub + 2 * myg])
elif ndims == 3:
# Field3D
outfile.write(
v, data[ix * mxsub:(ix + 1) * mxsub + 2 * mxg,
iy * mysub:(iy + 1) * mysub + 2 * myg, :])
else:
print(
"ERROR: variable found with unexpected number of dimensions,",
f.ndims(v))
f.close()
for infile in infile_list:
infile.close()
for outfile in outfile_list:
outfile.close()
return True
def split(nxpe,
nype,
path="data",
output="./",
informat="nc",
outformat=None,
mxg=2,
myg=2):
"""Split restart files across NXPE x NYPE processors.
Returns True on success
"""
if outformat is None:
outformat = informat
npes = nxpe * nype
if npes <= 0:
print("ERROR: Negative or zero number of processors")
return False
if path == output:
print("ERROR: Can't overwrite restart files")
return False
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
if nfiles == 0:
print("ERROR: No restart files found")
return False
# Read old processor layout
f = DataFile(os.path.join(path, file_list[0]))
# Get list of variables
var_list = f.list()
if len(var_list) == 0:
print("ERROR: No data found")
return False
old_npes = f.read('NPES')
old_nxpe = f.read('NXPE')
if nfiles != old_npes:
print("WARNING: Number of restart files inconsistent with NPES")
print("Setting nfiles = " + str(old_npes))
nfiles = old_npes
if old_npes % old_nxpe != 0:
print("ERROR: Old NPES is not a multiple of old NXPE")
return False
old_nype = int(old_npes / old_nxpe)
if nype % old_nype != 0:
print("SORRY: New nype must be a multiple of old nype")
return False
if nxpe % old_nxpe != 0:
print("SORRY: New nxpe must be a multiple of old nxpe")
return False
# Get dimension sizes
old_mxsub = 0
old_mysub = 0
mz = 0
for v in var_list:
if f.ndims(v) == 3:
s = f.size(v)
old_mxsub = s[0] - 2 * mxg
old_mysub = s[1] - 2 * myg
mz = s[2]
break
f.close()
# Calculate total size of the grid
nx = old_mxsub * old_nxpe
ny = old_mysub * old_nype
print(("Grid sizes: ", nx, ny, mz))
# Create the new restart files
for mype in range(npes):
# Calculate X and Y processor numbers
pex = mype % nxpe
pey = int(mype / nxpe)
old_pex = int(pex / xs)
old_pey = int(pey / ys)
old_x = pex % xs
old_y = pey % ys
# Old restart file number
old_mype = old_nxpe * old_pey + old_pex
# Calculate indices in old restart file
xmin = old_x * mxsub
xmax = xmin + mxsub - 1 + 2 * mxg
ymin = old_y * mysub
ymax = ymin + mysub - 1 + 2 * myg
print("New: " + str(mype) + " (" + str(pex) + ", " + str(pey) + ")")
print(" => " + str(old_mype) + " (" + str(old_pex) + ", " +
str(old_pey) + ") : (" + str(old_x) + ", " + str(old_y) + ")")
def resizeY(newy, path="data", output=".", informat="nc", outformat=None, myg=2):
"""Increase the number of Y points in restart files
NOTE:
* Can't overwrite
Parameters
----------
newy : int
ny for the new file
path : str, optional
Path to original restart files (default: "data")
output : str, optional
Path to write new restart files (default: current directory)
informat : str, optional
File extension of original files (default: "nc")
outformat : str, optional
File extension of new files (default: use the same as `informat`)
myg : int, optional
Number of ghost points in y (default: 2)
Returns
-------
True on success, else False
TODO
----
- Replace printing errors with raising `ValueError`
- Make informat work like `redistribute`
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.restart.*."+informat))
nfiles = len(file_list)
if nfiles == 0:
print("ERROR: No restart files found")
return False
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.restart."+str(i)+"."+informat)
outfname = os.path.join(output, "BOUT.restart."+str(i)+"."+outformat)
print("Processing %s -> %s" % (infname, outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Copy basic information
for var in ["hist_hi", "NXPE", "NYPE", "tt"]:
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 3:
# Could be an evolving variable [x,y,z]
print(" -> Resizing " + var)
# Read variable from input
indata = infile.read(var)
nx, ny, nz = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2*myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2*myg)
outdata = zeros([nx, newy, nz])
for x in range(nx):
for z in range(nz):
f = interp1d(
iny, indata[x, :, z], bounds_error=False, fill_value=0.0)
outdata[x, :, z] = f(outy)
outfile.write(var, outdata)
elif infile.ndims(var) == 2:
# Assume evolving variable [x,y]
print(" -> Resizing " + var)
# Read variable from input
indata = infile.read(var)
nx, ny = indata.shape
# y coordinate in input and output data
iny = (arange(ny) - myg + 0.5) / (ny - 2*myg)
outy = (arange(newy) - myg + 0.5) / (newy - 2*myg)
outdata = zeros([nx, newy])
for x in range(nx):
f = interp1d(iny, indata[x, :],
bounds_error=False, fill_value=0.0)
outdata[x, :] = f(outy)
outfile.write(var, outdata)
else:
# Copy variable
print(" -> Copying " + var)
# Read variable from input
data = infile.read(var)
try:
# Convert to scalar if necessary
data = data[0]
except:
pass
outfile.write(var, data)
infile.close()
outfile.close()
def redistribute(npes, path="data", nxpe=None, output=".", informat=None, outformat=None, mxg=2, myg=2):
"""Resize restart files across NPES processors.
Does not check if new processor arrangement is compatible with the
branch cuts. In this respect :py:func:`restart.split` is
safer. However, BOUT++ checks the topology during initialisation
anyway so this is not too serious.
Parameters
----------
npes : int
Number of processors for the new restart files
path : str, optional
Path to original restart files (default: "data")
nxpe : int, optional
Number of processors to use in the x-direction (determines
split: npes = nxpe * nype). Default is None which uses the
same algorithm as BoutMesh (but without topology information)
to determine a suitable value for nxpe.
output : str, optional
Location to save new restart files (default: current directory)
informat : str, optional
Specify file format of old restart files (must be a suffix
understood by DataFile, e.g. 'nc'). Default uses the format of
the first 'BOUT.restart.*' file listed by glob.glob.
outformat : str, optional
Specify file format of new restart files (must be a suffix
understood by DataFile, e.g. 'nc'). Default is to use the same
as informat.
Returns
-------
True on success
TODO
----
- Replace printing errors with raising `ValueError`
"""
if npes <= 0:
print("ERROR: Negative or zero number of processors")
return False
if path == output:
print("ERROR: Can't overwrite restart files")
return False
if informat is None:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*"))
else:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*."+informat))
nfiles = len(file_list)
# Read old processor layout
f = DataFile(file_list[0])
# Get list of variables
var_list = f.list()
if len(var_list) == 0:
print("ERROR: No data found")
return False
old_processor_layout = get_processor_layout(f, has_t_dimension=False)
print("Grid sizes: ", old_processor_layout.nx,
old_processor_layout.ny, old_processor_layout.mz)
if nfiles != old_processor_layout.npes:
print("WARNING: Number of restart files inconsistent with NPES")
print("Setting nfiles = " + str(old_processor_layout.npes))
nfiles = old_processor_layout.npes
if nfiles == 0:
print("ERROR: No restart files found")
return False
informat = file_list[0].split(".")[-1]
if outformat is None:
outformat = informat
try:
new_processor_layout = create_processor_layout(
old_processor_layout, npes, nxpe=nxpe)
except ValueError as e:
print("Could not find valid processor split. " + e.what())
nx = old_processor_layout.nx
ny = old_processor_layout.ny
mz = old_processor_layout.mz
mxg = old_processor_layout.mxg
myg = old_processor_layout.myg
old_npes = old_processor_layout.npes
old_nxpe = old_processor_layout.nxpe
old_nype = old_processor_layout.nype
old_mxsub = old_processor_layout.mxsub
old_mysub = old_processor_layout.mysub
nxpe = new_processor_layout.nxpe
nype = new_processor_layout.nype
mxsub = new_processor_layout.mxsub
mysub = new_processor_layout.mysub
outfile_list = []
for i in range(npes):
outpath = os.path.join(output, "BOUT.restart."+str(i)+"."+outformat)
outfile_list.append(DataFile(outpath, write=True, create=True))
infile_list = []
for i in range(old_npes):
inpath = os.path.join(path, "BOUT.restart."+str(i)+"."+outformat)
infile_list.append(DataFile(inpath))
for v in var_list:
ndims = f.ndims(v)
# collect data
if ndims == 0:
# scalar
data = f.read(v)
elif ndims == 2:
data = np.zeros((nx+2*mxg, ny+2*myg))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i/old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe-1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype-1:
iyend = 0
data[ix*old_mxsub+ixstart:(ix+1)*old_mxsub+2*mxg+ixend,
iy*old_mysub+iystart:(iy+1)*old_mysub+2*myg+iyend] = infile_list[i].read(v)[ixstart:old_mxsub+2*mxg+ixend, iystart:old_mysub+2*myg+iyend]
data = BoutArray(data, attributes=infile_list[0].attributes(v))
elif ndims == 3:
data = np.zeros((nx+2*mxg, ny+2*myg, mz))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i/old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe-1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype-1:
iyend = 0
data[ix*old_mxsub+ixstart:(ix+1)*old_mxsub+2*mxg+ixend, iy*old_mysub+iystart:(iy+1)*old_mysub+2*myg+iyend,
:] = infile_list[i].read(v)[ixstart:old_mxsub+2*mxg+ixend, iystart:old_mysub+2*myg+iyend, :]
data = BoutArray(data, attributes=infile_list[0].attributes(v))
else:
print("ERROR: variable found with unexpected number of dimensions,", ndims, v)
return False
# write data
for i in range(npes):
ix = i % nxpe
iy = int(i/nxpe)
outfile = outfile_list[i]
if v == "NPES":
outfile.write(v, npes)
elif v == "NXPE":
outfile.write(v, nxpe)
elif v == "NYPE":
outfile.write(v, nype)
elif ndims == 0:
# scalar
outfile.write(v, data)
elif ndims == 2:
# Field2D
outfile.write(
v, data[ix*mxsub:(ix+1)*mxsub+2*mxg, iy*mysub:(iy+1)*mysub+2*myg])
elif ndims == 3:
# Field3D
outfile.write(
v, data[ix*mxsub:(ix+1)*mxsub+2*mxg, iy*mysub:(iy+1)*mysub+2*myg, :])
else:
print(
"ERROR: variable found with unexpected number of dimensions,", f.ndims(v))
f.close()
for infile in infile_list:
infile.close()
for outfile in outfile_list:
outfile.close()
return True
def collect(varname, xind=None, yind=None, zind=None, tind=None, path=".",yguards=False, xguards=True, info=True,prefix="BOUT.dmp",strict=False):
"""Collect a variable from a set of BOUT++ outputs.
data = collect(name)
name Name of the variable (string)
Optional arguments:
xind = [min,max] Range of X indices to collect
yind = [min,max] Range of Y indices to collect
zind = [min,max] Range of Z indices to collect
tind = [min,max] Range of T indices to collect
path = "." Path to data files
prefix = "BOUT.dmp" File prefix
yguards = False Collect Y boundary guard cells?
xguards = True Collect X boundary guard cells?
(Set to True to be consistent with the
definition of nx)
info = True Print information about collect?
strict = False Fail if the exact variable name is not found?
"""
# Search for BOUT++ dump files in NetCDF format
file_list_nc = glob.glob(os.path.join(path, prefix+".nc"))
file_list_h5 = glob.glob(os.path.join(path, prefix+".hdf5"))
if file_list_nc != [] and file_list_h5 != []:
raise IOError("Error: Both NetCDF and HDF5 files are present: do not know which to read.")
elif file_list_h5 != []:
suffix = ".hdf5"
file_list = file_list_h5
else:
suffix = ".nc"
file_list = file_list_nc
if file_list != []:
print("Single (parallel) data file")
f = DataFile(file_list[0]) # Open the file
data = f.read(varname)
return data
file_list_nc = glob.glob(os.path.join(path, prefix+".*nc"))
file_list_h5 = glob.glob(os.path.join(path, prefix+".*hdf5"))
if file_list_nc != [] and file_list_h5 != []:
raise IOError("Error: Both NetCDF and HDF5 files are present: do not know which to read.")
elif file_list_h5 != []:
suffix = ".hdf5"
file_list = file_list_h5
else:
suffix = ".nc"
file_list = file_list_nc
file_list.sort()
if file_list == []:
raise IOError("ERROR: No data files found")
nfiles = len(file_list)
# Read data from the first file
f = DataFile(file_list[0])
try:
dimens = f.dimensions(varname)
#ndims = len(dimens)
ndims = f.ndims(varname)
except:
if strict:
raise
else:
# Find the variable
varname = findVar(varname, f.list())
dimens = f.dimensions(varname)
#ndims = len(dimens)
ndims = f.ndims(varname)
if ndims < 2:
# Just read from file
data = f.read(varname)
f.close()
return data
if ndims > 4:
raise ValueError("ERROR: Too many dimensions")
mxsub = f.read("MXSUB")
if mxsub is None:
raise ValueError("Missing MXSUB variable")
mysub = f.read("MYSUB")
mz = f.read("MZ")
myg = f.read("MYG")
t_array = f.read("t_array")
if t_array is None:
nt = 1
t_array = np.zeros(1)
else:
nt = len(t_array)
if info:
print("mxsub = %d mysub = %d mz = %d\n" % (mxsub, mysub, mz))
# Get the version of BOUT++ (should be > 0.6 for NetCDF anyway)
try:
v = f.read("BOUT_VERSION")
# 2D decomposition
nxpe = f.read("NXPE")
mxg = f.read("MXG")
nype = f.read("NYPE")
npe = nxpe * nype
if info:
print("nxpe = %d, nype = %d, npe = %d\n" % (nxpe, nype, npe))
if npe < nfiles:
print("WARNING: More files than expected (" + str(npe) + ")")
elif npe > nfiles:
print("WARNING: Some files missing. Expected " + str(npe))
if xguards:
nx = nxpe * mxsub + 2*mxg
else:
nx = nxpe * mxsub
except KeyError:
print("BOUT++ version : Pre-0.2")
# Assume number of files is correct
# No decomposition in X
nx = mxsub
mxg = 0
nxpe = 1
nype = nfiles
if yguards:
ny = mysub * nype + 2*myg
else:
ny = mysub * nype
f.close();
# Check ranges
def check_range(r, low, up, name="range"):
r2 = r
if r != None:
try:
n = len(r2)
except:
# No len attribute, so probably a single number
r2 = [r2,r2]
if (len(r2) < 1) or (len(r2) > 2):
print("WARNING: "+name+" must be [min, max]")
r2 = None
else:
if len(r2) == 1:
r2 = [r2,r2]
if r2[0] < low:
r2[0] = low
if r2[0] > up:
r2[0] = up
if r2[1] < 0:
r2[1] = 0
if r2[1] > up:
r2[1] = up
if r2[0] > r2[1]:
tmp = r2[0]
r2[0] = r2[1]
r2[1] = tmp
else:
r2 = [low, up]
return r2
xind = check_range(xind, 0, nx-1, "xind")
yind = check_range(yind, 0, ny-1, "yind")
zind = check_range(zind, 0, mz-2, "zind")
tind = check_range(tind, 0, nt-1, "tind")
xsize = xind[1] - xind[0] + 1
ysize = yind[1] - yind[0] + 1
zsize = zind[1] - zind[0] + 1
tsize = tind[1] - tind[0] + 1
# Map between dimension names and output size
sizes = {'x':xsize, 'y':ysize, 'z':zsize, 't':tsize}
# Create a list with size of each dimension
ddims = [sizes[d] for d in dimens]
# Create the data array
data = np.zeros(ddims)
for i in range(npe):
# Get X and Y processor indices
pe_yind = int(i/nxpe)
pe_xind = i % nxpe
inrange = True
if yguards:
# Get local ranges
ymin = yind[0] - pe_yind*mysub
ymax = yind[1] - pe_yind*mysub
# Check lower y boundary
if pe_yind == 0:
# Keeping inner boundary
if ymax < 0: inrange = False
if ymin < 0: ymin = 0
else:
if ymax < myg: inrange = False
if ymin < myg: ymin = myg
# Upper y boundary
if pe_yind == (nype - 1):
# Keeping outer boundary
if ymin >= (mysub + 2*myg): inrange = False
if ymax > (mysub + 2*myg - 1): ymax = (mysub + 2*myg - 1)
else:
if ymin >= (mysub + myg): inrange = False
if ymax >= (mysub + myg): ymax = (mysub+myg-1)
# Calculate global indices
ygmin = ymin + pe_yind * mysub
ygmax = ymax + pe_yind * mysub
else:
# Get local ranges
ymin = yind[0] - pe_yind*mysub + myg
ymax = yind[1] - pe_yind*mysub + myg
if (ymin >= (mysub + myg)) or (ymax < myg):
inrange = False # Y out of range
if ymin < myg:
ymin = myg
if ymax >= mysub+myg:
ymax = myg + mysub - 1
# Calculate global indices
ygmin = ymin + pe_yind * mysub - myg
ygmax = ymax + pe_yind * mysub - myg
if xguards:
# Get local ranges
xmin = xind[0] - pe_xind*mxsub
xmax = xind[1] - pe_xind*mxsub
# Check lower x boundary
if pe_xind == 0:
# Keeping inner boundary
if xmax < 0: inrange = False
if xmin < 0: xmin = 0
else:
if xmax < mxg: inrange = False
if xmin < mxg: xmin = mxg
# Upper x boundary
if pe_xind == (nxpe - 1):
# Keeping outer boundary
if xmin >= (mxsub + 2*mxg): inrange = False
if xmax > (mxsub + 2*mxg - 1): xmax = (mxsub + 2*mxg - 1)
else:
if xmin >= (mxsub + mxg): inrange = False
if xmax >= (mxsub + mxg): xmax = (mxsub+mxg-1)
# Calculate global indices
xgmin = xmin + pe_xind * mxsub
xgmax = xmax + pe_xind * mxsub
else:
# Get local ranges
xmin = xind[0] - pe_xind*mxsub + mxg
xmax = xind[1] - pe_xind*mxsub + mxg
if (xmin >= (mxsub + mxg)) or (xmax < mxg):
inrange = False # X out of range
if xmin < mxg:
xmin = mxg
if xmax >= mxsub+mxg:
xmax = mxg + mxsub - 1
# Calculate global indices
xgmin = xmin + pe_xind * mxsub - mxg
xgmax = xmax + pe_xind * mxsub - mxg
# Number of local values
nx_loc = xmax - xmin + 1
ny_loc = ymax - ymin + 1
if not inrange:
continue # Don't need this file
filename = os.path.join(path, prefix+"." + str(i) + suffix)
if info:
sys.stdout.write("\rReading from " + filename + ": [" + \
str(xmin) + "-" + str(xmax) + "][" + \
str(ymin) + "-" + str(ymax) + "] -> [" + \
str(xgmin) + "-" + str(xgmax) + "][" + \
str(ygmin) + "-" + str(ygmax) + "]")
f = DataFile(filename)
if ndims == 4:
d = f.read(varname, ranges=[tind[0],tind[1]+1,
xmin, xmax+1,
ymin, ymax+1,
zind[0],zind[1]+1])
data[:, (xgmin-xind[0]):(xgmin-xind[0]+nx_loc), (ygmin-yind[0]):(ygmin-yind[0]+ny_loc), :] = d
elif ndims == 3:
# Could be xyz or txy
if dimens[2] == 'z': # xyz
d = f.read(varname, ranges=[xmin, xmax+1,
ymin, ymax+1,
zind[0],zind[1]+1])
data[(xgmin-xind[0]):(xgmin-xind[0]+nx_loc), (ygmin-yind[0]):(ygmin-yind[0]+ny_loc), :] = d
else: # txy
d = f.read(varname, ranges=[tind[0],tind[1]+1,
xmin, xmax+1,
ymin, ymax+1])
data[:, (xgmin-xind[0]):(xgmin-xind[0]+nx_loc), (ygmin-yind[0]):(ygmin-yind[0]+ny_loc)] = d
elif ndims == 2:
# xy
d = f.read(varname, ranges=[xmin, xmax+1,
ymin, ymax+1])
data[(xgmin-xind[0]):(xgmin-xind[0]+nx_loc), (ygmin-yind[0]):(ygmin-yind[0]+ny_loc)] = d
elif ndims == 1:
if dimens[0] == 't':
# t
d = f.read(varname, ranges=[tind[0],tind[1]+1])
data[:] = d
f.close()
# Force the precision of arrays of dimension>1
if ndims>1:
try:
data = data.astype(t_array.dtype, copy=False)
except TypeError:
data = data.astype(t_array.dtype)
# Finished looping over all files
if info:
sys.stdout.write("\n")
return data
def create(averagelast=1, final=-1, path="data", output="./", informat="nc", outformat=None):
"""
Create restart files from data (dmp) files.
Inputs
======
averagelast Number of time points to average over.
Default is 1 i.e. just take last time-point
final The last time point to use. Default is last (-1)
path Path to the input data files
output Path where the output restart files should go
informat Format of the input data files
outformat Format of the output restart files
"""
if outformat is None:
outformat = informat
file_list = glob.glob(os.path.join(path, "BOUT.dmp.*." + informat))
nfiles = len(file_list)
print(("Number of data files: ", nfiles))
for i in range(nfiles):
# Open each data file
infname = os.path.join(path, "BOUT.dmp." + str(i) + "." + informat)
outfname = os.path.join(output, "BOUT.restart." + str(i) + "." + outformat)
print((infname, " -> ", outfname))
infile = DataFile(infname)
outfile = DataFile(outfname, create=True)
# Get the data always needed in restart files
hist_hi = infile.read("iteration")
print(("hist_hi = ", hist_hi))
outfile.write("hist_hi", hist_hi)
t_array = infile.read("t_array")
tt = t_array[final]
print(("tt = ", tt))
outfile.write("tt", tt)
tind = final
if tind < 0.0:
tind = len(t_array) + final
NXPE = infile.read("NXPE")
NYPE = infile.read("NYPE")
NPES = NXPE * NYPE
print(("NPES = ", NPES, " NXPE = ", NXPE))
outfile.write("NPES", NPES)
outfile.write("NXPE", NXPE)
# Get a list of variables
varnames = infile.list()
for var in varnames:
if infile.ndims(var) == 4:
# Could be an evolving variable
print((" -> ", var))
data = infile.read(var)
if averagelast == 1:
slice = data[final, :, :, :]
else:
slice = mean(data[(final - averagelast) : final, :, :, :], axis=0)
print(slice.shape)
outfile.write(var, slice)
infile.close()
outfile.close()
def slice(infile, outfile, region=None, xind=None, yind=None):
"""
xind, yind - index ranges. Range includes first point, but not last point
"""
# Open input and output files
indf = DataFile(infile)
outdf = DataFile(outfile, create=True)
nx = indf["nx"][0]
ny = indf["ny"][0]
if region:
# Select a region of the mesh
xind = [0, nx]
if region == 0:
# Lower inner leg
yind = [0, indf["jyseps1_1"][0] + 1]
elif region == 1:
# Inner core
yind = [indf["jyseps1_1"][0] + 1, indf["jyseps2_1"][0] + 1]
elif region == 2:
# Upper inner leg
yind = [indf["jyseps2_1"][0] + 1, indf["ny_inner"][0]]
elif region == 3:
# Upper outer leg
yind = [indf["ny_inner"][0], indf["jyseps1_2"][0] + 1]
elif region == 4:
# Outer core
yind = [indf["jyseps1_2"][0] + 1, indf["jyseps2_2"][0] + 1]
else:
# Lower outer leg
yind = [indf["jyseps2_2"][0] + 1, ny]
else:
# Use indices
if not xind:
xind = [0, nx]
if not yind:
yind = [0, ny]
print("Indices: [%d:%d, %d:%d]" % (xind[0], xind[1], yind[0], yind[1]))
# List of variables requiring special handling
special = [
"nx", "ny", "ny_inner", "ixseps1", "ixseps2", "jyseps1_1", "jyseps1_2",
"jyseps2_1", "jyseps2_2", "ShiftAngle"
]
outdf["nx"] = xind[1] - xind[0]
outdf["ny"] = yind[1] - yind[0]
outdf["ny_inner"] = indf["ny_inner"][0] - yind[0]
outdf["ixseps1"] = indf["ixseps1"][0]
outdf["ixseps2"] = indf["ixseps2"][0]
outdf["jyseps1_1"] = indf["jyseps1_1"][0] - yind[0]
outdf["jyseps2_1"] = indf["jyseps2_1"][0] - yind[0]
outdf["jyseps1_2"] = indf["jyseps1_2"][0] - yind[0]
outdf["jyseps2_2"] = indf["jyseps2_2"][0] - yind[0]
outdf["ShiftAngle"] = indf["ShiftAngle"][xind[0]:xind[1]]
# Loop over all variables
for v in list(indf.keys()):
if v in special:
continue # Skip these variables
ndims = indf.ndims(v)
if ndims == 0:
# Copy scalars
print("Copying variable: " + v)
outdf[v] = indf[v][0]
elif ndims == 2:
# Assume [x,y]
print("Slicing variable: " + v)
outdf[v] = indf[v][xind[0]:xind[1], yind[0]:yind[1]]
else:
# Skip
print("Skipping variable: " + v)
indf.close()
outdf.close()
def redistribute(npes, path="data", nxpe=None, output=".", informat=None, outformat=None, mxg=2, myg=2):
"""Resize restart files across NPES processors.
Does not check if new processor arrangement is compatible with the branch cuts. In this respect restart.split is safer. However, BOUT++ checks the topology during initialisation anyway so this is not too serious.
Parameters
----------
npes : int
number of processors for the new restart files
path : string, optional
location of old restart files
nxpe : int, optional
number of processors to use in the x-direction (determines split: npes = nxpe * nype). Default is None which uses the same algorithm as BoutMesh (but without topology information) to determine a suitable value for nxpe.
output : string, optional
location to save new restart files
informat : string, optional
specify file format of old restart files (must be a suffix understood by DataFile, e.g. 'nc'). Default uses the format of the first 'BOUT.restart.*' file listed by glob.glob.
outformat : string, optional
specify file format of new restart files (must be a suffix understood by DataFile, e.g. 'nc'). Default is to use the same as informat.
Returns
-------
True on success
"""
if npes <= 0:
print("ERROR: Negative or zero number of processors")
return False
if path == output:
print("ERROR: Can't overwrite restart files")
return False
if informat is None:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*"))
else:
file_list = glob.glob(os.path.join(path, "BOUT.restart.*." + informat))
nfiles = len(file_list)
# Read old processor layout
f = DataFile(file_list[0])
# Get list of variables
var_list = f.list()
if len(var_list) == 0:
print("ERROR: No data found")
return False
old_npes = f.read("NPES")
old_nxpe = f.read("NXPE")
old_nype = int(old_npes / old_nxpe)
if nfiles != old_npes:
print("WARNING: Number of restart files inconsistent with NPES")
print("Setting nfiles = " + str(old_npes))
nfiles = old_npes
if nfiles == 0:
print("ERROR: No restart files found")
return False
informat = file_list[0].split(".")[-1]
if outformat is None:
outformat = informat
old_mxsub = 0
old_mysub = 0
mz = 0
for v in var_list:
if f.ndims(v) == 3:
s = f.size(v)
old_mxsub = s[0] - 2 * mxg
if old_mxsub < 0:
if s[0] == 1:
old_mxsub = 1
mxg = 0
elif s[0] == 3:
old_mxsub = 1
mxg = 1
else:
print("Number of x points is wrong?")
return False
old_mysub = s[1] - 2 * myg
if old_mysub < 0:
if s[1] == 1:
old_mysub = 1
myg = 0
elif s[1] == 3:
old_mysub = 1
myg = 1
else:
print("Number of y points is wrong?")
return False
mz = s[2]
break
# Calculate total size of the grid
nx = old_mxsub * old_nxpe
ny = old_mysub * old_nype
print("Grid sizes: ", nx, ny, mz)
if nxpe is None: # Copy algorithm from BoutMesh for selecting nxpe
ideal = sqrt(float(nx) * float(npes) / float(ny)) # Results in square domain
for i in range(1, npes + 1):
if npes % i == 0 and nx % i == 0 and int(nx / i) >= mxg and ny % (npes / i) == 0:
# Found an acceptable value
# Warning: does not check branch cuts!
if nxpe is None or abs(ideal - i) < abs(ideal - nxpe):
nxpe = i # Keep value nearest to the ideal
if nxpe is None:
print("ERROR: could not find a valid value for nxpe")
return False
nype = int(npes / nxpe)
outfile_list = []
for i in range(npes):
outpath = os.path.join(output, "BOUT.restart." + str(i) + "." + outformat)
outfile_list.append(DataFile(outpath, write=True, create=True))
infile_list = []
for i in range(old_npes):
inpath = os.path.join(path, "BOUT.restart." + str(i) + "." + outformat)
infile_list.append(DataFile(inpath))
old_mxsub = int(nx / old_nxpe)
old_mysub = int(ny / old_nype)
mxsub = int(nx / nxpe)
mysub = int(ny / nype)
for v in var_list:
ndims = f.ndims(v)
# collect data
if ndims == 0:
# scalar
data = f.read(v)
elif ndims == 2:
data = np.zeros((nx + 2 * mxg, ny + 2 * myg))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i / old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe - 1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype - 1:
iyend = 0
data[
ix * old_mxsub + ixstart : (ix + 1) * old_mxsub + 2 * mxg + ixend,
iy * old_mysub + iystart : (iy + 1) * old_mysub + 2 * myg + iyend,
] = infile_list[i].read(v)[ixstart : old_mxsub + 2 * mxg + ixend, iystart : old_mysub + 2 * myg + iyend]
elif ndims == 3:
data = np.zeros((nx + 2 * mxg, ny + 2 * myg, mz))
for i in range(old_npes):
ix = i % old_nxpe
iy = int(i / old_nxpe)
ixstart = mxg
if ix == 0:
ixstart = 0
ixend = -mxg
if ix == old_nxpe - 1:
ixend = 0
iystart = myg
if iy == 0:
iystart = 0
iyend = -myg
if iy == old_nype - 1:
iyend = 0
data[
ix * old_mxsub + ixstart : (ix + 1) * old_mxsub + 2 * mxg + ixend,
iy * old_mysub + iystart : (iy + 1) * old_mysub + 2 * myg + iyend,
:,
] = infile_list[i].read(v)[
ixstart : old_mxsub + 2 * mxg + ixend, iystart : old_mysub + 2 * myg + iyend, :
]
else:
print("ERROR: variable found with unexpected number of dimensions,", ndims, v)
return False
# write data
for i in range(npes):
ix = i % nxpe
iy = int(i / nxpe)
outfile = outfile_list[i]
if v == "NPES":
outfile.write(v, npes)
elif v == "NXPE":
outfile.write(v, nxpe)
elif ndims == 0:
# scalar
outfile.write(v, data)
elif ndims == 2:
# Field2D
outfile.write(v, data[ix * mxsub : (ix + 1) * mxsub + 2 * mxg, iy * mysub : (iy + 1) * mysub + 2 * myg])
elif ndims == 3:
# Field3D
outfile.write(
v, data[ix * mxsub : (ix + 1) * mxsub + 2 * mxg, iy * mysub : (iy + 1) * mysub + 2 * myg, :]
)
else:
print("ERROR: variable found with unexpected number of dimensions,", f.ndims(v))
f.close()
for infile in infile_list:
infile.close()
for outfile in outfile_list:
outfile.close()
return True
def collect(varname,
xind=None,
yind=None,
zind=None,
tind=None,
path=".",
yguards=False,
xguards=True,
info=True,
prefix="BOUT.dmp",
strict=False):
"""Collect a variable from a set of BOUT++ outputs.
data = collect(name)
name Name of the variable (string)
Optional arguments:
xind = [min,max] Range of X indices to collect
yind = [min,max] Range of Y indices to collect
zind = [min,max] Range of Z indices to collect
tind = [min,max] Range of T indices to collect
path = "." Path to data files
prefix = "BOUT.dmp" File prefix
yguards = False Collect Y boundary guard cells?
xguards = True Collect X boundary guard cells?
(Set to True to be consistent with the
definition of nx)
info = True Print information about collect?
strict = False Fail if the exact variable name is not found?
"""
# Search for BOUT++ dump files in NetCDF format
file_list_nc = glob.glob(os.path.join(path, prefix + ".nc"))
file_list_h5 = glob.glob(os.path.join(path, prefix + ".hdf5"))
if file_list_nc != [] and file_list_h5 != []:
raise IOError(
"Error: Both NetCDF and HDF5 files are present: do not know which to read."
)
elif file_list_h5 != []:
suffix = ".hdf5"
file_list = file_list_h5
else:
suffix = ".nc"
file_list = file_list_nc
if file_list != []:
print("Single (parallel) data file")
f = DataFile(file_list[0]) # Open the file
data = f.read(varname)
return data
file_list_nc = glob.glob(os.path.join(path, prefix + ".*nc"))
file_list_h5 = glob.glob(os.path.join(path, prefix + ".*hdf5"))
if file_list_nc != [] and file_list_h5 != []:
raise IOError(
"Error: Both NetCDF and HDF5 files are present: do not know which to read."
)
elif file_list_h5 != []:
suffix = ".hdf5"
file_list = file_list_h5
else:
suffix = ".nc"
file_list = file_list_nc
file_list.sort()
if file_list == []:
raise IOError("ERROR: No data files found")
nfiles = len(file_list)
# Read data from the first file
f = DataFile(file_list[0])
try:
dimens = f.dimensions(varname)
#ndims = len(dimens)
ndims = f.ndims(varname)
except:
if strict:
raise
else:
# Find the variable
varname = findVar(varname, f.list())
dimens = f.dimensions(varname)
#ndims = len(dimens)
ndims = f.ndims(varname)
# ndims is 0 for reals, and 1 for f.ex. t_array
if ndims < 2:
# Just read from file
if varname != 't_array':
data = f.read(varname)
elif (varname == 't_array') and (tind is None):
data = f.read(varname)
elif (varname == 't_array') and (tind is not None):
data = f.read(varname, ranges=[tind[0], tind[1] + 1])
f.close()
return data
if ndims > 4:
raise ValueError("ERROR: Too many dimensions")
mxsub = f.read("MXSUB")
if mxsub is None:
raise ValueError("Missing MXSUB variable")
mysub = f.read("MYSUB")
mz = f.read("MZ")
myg = f.read("MYG")
t_array = f.read("t_array")
if t_array is None:
nt = 1
t_array = np.zeros(1)
else:
nt = len(t_array)
if info:
print("mxsub = %d mysub = %d mz = %d\n" % (mxsub, mysub, mz))
# Get the version of BOUT++ (should be > 0.6 for NetCDF anyway)
try:
version = f["BOUT_VERSION"]
except KeyError:
print("BOUT++ version : Pre-0.2")
version = 0
if version < 3.5:
# Remove extra point
nz = mz - 1
else:
nz = mz
# Fallback to sensible (?) defaults
try:
nxpe = f["NXPE"]
except KeyError:
nxpe = 1
print("NXPE not found, setting to {}".format(nxpe))
try:
mxg = f["MXG"]
except KeyError:
mxg = 0
print("MXG not found, setting to {}".format(mxg))
try:
nype = f["NYPE"]
except KeyError:
nype = nfiles
print("NYPE not found, setting to {}".format(nype))
npe = nxpe * nype
if info:
print("nxpe = %d, nype = %d, npe = %d\n" % (nxpe, nype, npe))
if npe < nfiles:
print("WARNING: More files than expected (" + str(npe) + ")")
elif npe > nfiles:
print("WARNING: Some files missing. Expected " + str(npe))
if xguards:
nx = nxpe * mxsub + 2 * mxg
else:
nx = nxpe * mxsub
if yguards:
ny = mysub * nype + 2 * myg
else:
ny = mysub * nype
f.close()
# Check ranges
def check_range(r, low, up, name="range"):
r2 = r
if r is not None:
try:
n = len(r2)
except:
# No len attribute, so probably a single number
r2 = [r2, r2]
if (len(r2) < 1) or (len(r2) > 2):
print("WARNING: " + name + " must be [min, max]")
r2 = None
else:
if len(r2) == 1:
r2 = [r2, r2]
if r2[0] < 0 and low >= 0:
r2[0] += (up - low + 1)
if r2[1] < 0 and low >= 0:
r2[1] += (up - low + 1)
if r2[0] < low:
r2[0] = low
if r2[0] > up:
r2[0] = up
if r2[1] < low:
r2[1] = low
if r2[1] > up:
r2[1] = up
if r2[0] > r2[1]:
tmp = r2[0]
r2[0] = r2[1]
r2[1] = tmp
else:
r2 = [low, up]
return r2
xind = check_range(xind, 0, nx - 1, "xind")
yind = check_range(yind, 0, ny - 1, "yind")
zind = check_range(zind, 0, nz - 1, "zind")
tind = check_range(tind, 0, nt - 1, "tind")
xsize = xind[1] - xind[0] + 1
ysize = yind[1] - yind[0] + 1
zsize = zind[1] - zind[0] + 1
tsize = tind[1] - tind[0] + 1
# Map between dimension names and output size
sizes = {'x': xsize, 'y': ysize, 'z': zsize, 't': tsize}
# Create a list with size of each dimension
ddims = [sizes[d] for d in dimens]
# Create the data array
data = np.zeros(ddims)
for i in range(npe):
# Get X and Y processor indices
pe_yind = int(i / nxpe)
pe_xind = i % nxpe
inrange = True
if yguards:
# Get local ranges
ymin = yind[0] - pe_yind * mysub
ymax = yind[1] - pe_yind * mysub
# Check lower y boundary
if pe_yind == 0:
# Keeping inner boundary
if ymax < 0: inrange = False
if ymin < 0: ymin = 0
else:
if ymax < myg: inrange = False
if ymin < myg: ymin = myg
# Upper y boundary
if pe_yind == (nype - 1):
# Keeping outer boundary
if ymin >= (mysub + 2 * myg): inrange = False
if ymax > (mysub + 2 * myg - 1): ymax = (mysub + 2 * myg - 1)
else:
if ymin >= (mysub + myg): inrange = False
if ymax >= (mysub + myg): ymax = (mysub + myg - 1)
# Calculate global indices
ygmin = ymin + pe_yind * mysub
ygmax = ymax + pe_yind * mysub
else:
# Get local ranges
ymin = yind[0] - pe_yind * mysub + myg
ymax = yind[1] - pe_yind * mysub + myg
if (ymin >= (mysub + myg)) or (ymax < myg):
inrange = False # Y out of range
if ymin < myg:
ymin = myg
if ymax >= mysub + myg:
ymax = myg + mysub - 1
# Calculate global indices
ygmin = ymin + pe_yind * mysub - myg
ygmax = ymax + pe_yind * mysub - myg
if xguards:
# Get local ranges
xmin = xind[0] - pe_xind * mxsub
xmax = xind[1] - pe_xind * mxsub
# Check lower x boundary
if pe_xind == 0:
# Keeping inner boundary
if xmax < 0: inrange = False
if xmin < 0: xmin = 0
else:
if xmax < mxg: inrange = False
if xmin < mxg: xmin = mxg
# Upper x boundary
if pe_xind == (nxpe - 1):
# Keeping outer boundary
if xmin >= (mxsub + 2 * mxg): inrange = False
if xmax > (mxsub + 2 * mxg - 1): xmax = (mxsub + 2 * mxg - 1)
else:
if xmin >= (mxsub + mxg): inrange = False
if xmax >= (mxsub + mxg): xmax = (mxsub + mxg - 1)
# Calculate global indices
xgmin = xmin + pe_xind * mxsub
xgmax = xmax + pe_xind * mxsub
else:
# Get local ranges
xmin = xind[0] - pe_xind * mxsub + mxg
xmax = xind[1] - pe_xind * mxsub + mxg
if (xmin >= (mxsub + mxg)) or (xmax < mxg):
inrange = False # X out of range
if xmin < mxg:
xmin = mxg
if xmax >= mxsub + mxg:
xmax = mxg + mxsub - 1
# Calculate global indices
xgmin = xmin + pe_xind * mxsub - mxg
xgmax = xmax + pe_xind * mxsub - mxg
# Number of local values
nx_loc = xmax - xmin + 1
ny_loc = ymax - ymin + 1
if not inrange:
continue # Don't need this file
filename = os.path.join(path, prefix + "." + str(i) + suffix)
if info:
sys.stdout.write("\rReading from " + filename + ": [" + \
str(xmin) + "-" + str(xmax) + "][" + \
str(ymin) + "-" + str(ymax) + "] -> [" + \
str(xgmin) + "-" + str(xgmax) + "][" + \
str(ygmin) + "-" + str(ygmax) + "]")
f = DataFile(filename)
if ndims == 4:
d = f.read(varname,
ranges=[
tind[0], tind[1] + 1, xmin, xmax + 1, ymin,
ymax + 1, zind[0], zind[1] + 1
])
data[:, (xgmin - xind[0]):(xgmin - xind[0] + nx_loc),
(ygmin - yind[0]):(ygmin - yind[0] + ny_loc), :] = d
elif ndims == 3:
# Could be xyz or txy
if dimens[2] == 'z': # xyz
d = f.read(varname,
ranges=[
xmin, xmax + 1, ymin, ymax + 1, zind[0],
zind[1] + 1
])
data[(xgmin - xind[0]):(xgmin - xind[0] + nx_loc),
(ygmin - yind[0]):(ygmin - yind[0] + ny_loc), :] = d
else: # txy
d = f.read(varname,
ranges=[
tind[0], tind[1] + 1, xmin, xmax + 1, ymin,
ymax + 1
])
data[:, (xgmin - xind[0]):(xgmin - xind[0] + nx_loc),
(ygmin - yind[0]):(ygmin - yind[0] + ny_loc)] = d
elif ndims == 2:
# xy
d = f.read(varname, ranges=[xmin, xmax + 1, ymin, ymax + 1])
data[(xgmin - xind[0]):(xgmin - xind[0] + nx_loc),
(ygmin - yind[0]):(ygmin - yind[0] + ny_loc)] = d
f.close()
# Force the precision of arrays of dimension>1
if ndims > 1:
try:
data = data.astype(t_array.dtype, copy=False)
except TypeError:
data = data.astype(t_array.dtype)
# Finished looping over all files
if info:
sys.stdout.write("\n")
return data
def slice(infile, outfile, region=None, xind=None, yind=None):
"""Copy an X-Y slice from one DataFile to another
Parameters
----------
infile : str
Name of DataFile to read slice from
outfile : str
Name of DataFile to write slice to. File will be created, and
will be overwritten if it already exists
region : {0, 1, 2, 3, 4, 5, None}, optional
Copy a whole region. The available regions are:
- 0: Lower inner leg
- 1: Inner core
- 2: Upper inner leg
- 3: Upper outer leg
- 4: Outer core
- 5: Lower outer leg
xind, yind : (int, int), optional
Index ranges for x and y. Range includes first point, but not
last point
TODO
----
- Rename to not clobber builtin `slice`
- Better regions?
"""
# Open input and output files
indf = DataFile(infile)
outdf = DataFile(outfile, create=True)
nx = indf["nx"][0]
ny = indf["ny"][0]
if region:
# Select a region of the mesh
xind = [0, nx]
if region == 0:
# Lower inner leg
yind = [0, indf["jyseps1_1"][0]+1]
elif region == 1:
# Inner core
yind = [indf["jyseps1_1"][0]+1, indf["jyseps2_1"][0]+1]
elif region == 2:
# Upper inner leg
yind = [indf["jyseps2_1"][0]+1, indf["ny_inner"][0]]
elif region == 3:
# Upper outer leg
yind = [indf["ny_inner"][0], indf["jyseps1_2"][0]+1]
elif region == 4:
# Outer core
yind = [indf["jyseps1_2"][0]+1, indf["jyseps2_2"][0]+1]
else:
# Lower outer leg
yind = [indf["jyseps2_2"][0]+1, ny]
else:
# Use indices
if not xind:
xind = [0, nx]
if not yind:
yind = [0, ny]
print("Indices: [%d:%d, %d:%d]" % (xind[0], xind[1], yind[0], yind[1]))
# List of variables requiring special handling
special = ["nx", "ny", "ny_inner",
"ixseps1", "ixseps2",
"jyseps1_1", "jyseps1_2", "jyseps2_1", "jyseps2_2",
"ShiftAngle"]
outdf["nx"] = xind[1] - xind[0]
outdf["ny"] = yind[1] - yind[0]
outdf["ny_inner"] = indf["ny_inner"][0] - yind[0]
outdf["ixseps1"] = indf["ixseps1"][0]
outdf["ixseps2"] = indf["ixseps2"][0]
outdf["jyseps1_1"] = indf["jyseps1_1"][0] - yind[0]
outdf["jyseps2_1"] = indf["jyseps2_1"][0] - yind[0]
outdf["jyseps1_2"] = indf["jyseps1_2"][0] - yind[0]
outdf["jyseps2_2"] = indf["jyseps2_2"][0] - yind[0]
outdf["ShiftAngle"] = indf["ShiftAngle"][xind[0]:xind[1]]
# Loop over all variables
for v in list(indf.keys()):
if v in special:
continue # Skip these variables
ndims = indf.ndims(v)
if ndims == 0:
# Copy scalars
print("Copying variable: " + v)
outdf[v] = indf[v][0]
elif ndims == 2:
# Assume [x,y]
print("Slicing variable: " + v);
outdf[v] = indf[v][xind[0]:xind[1], yind[0]:yind[1]]
else:
# Skip
print("Skipping variable: " + v)
indf.close()
outdf.close()
