def __call__(self,
spalloc_server,
spalloc_port=22244,
spalloc_machine=None,
max_sdram_size=None,
max_machine_core_reduction=0):
"""
:param str spalloc_server:
:param int spalloc_port:
:param str spalloc_machine:
:param int max_sdram_size:
:param int max_machine_core_reduction:
:rtype: ~.Machine
"""
with ProtocolClient(spalloc_server, spalloc_port) as client:
machines = client.list_machines()
# Close the context immediately; don't want to keep this particular
# connection around as there's not a great chance of this code
# being rerun in this process any time soon.
max_width = None
max_height = None
max_area = -1
for machine in self._filter(machines, spalloc_machine):
# Get the width and height in chips, and logical area in chips**2
width, height, area = self._get_size(machine)
# The "biggest" board is the one with the most chips
if area > max_area:
max_area = area
max_width = width
max_height = height
if max_width is None:
raise Exception(
"The spalloc server appears to have no compatible machines")
n_cpus_per_chip = (Machine.max_cores_per_chip() -
max_machine_core_reduction)
# Return the width and height, and make no assumption about wrap-
# arounds or version.
return virtual_machine(width=max_width,
height=max_height,
sdram_per_chip=max_sdram_size,
n_cpus_per_chip=n_cpus_per_chip,
validate=False)
