dmlc--dgl
Rhett Ying
105 行
3.2 KiB
Python
105 行
3.2 KiB
Python
"""Define a fake kvstore
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This kvstore is used when running in the standalone mode
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"""
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from .. import backend as F
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class KVClient(object):
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''' The fake KVStore client.
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This is to mimic the distributed KVStore client. It's used for DistGraph
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in standalone mode.
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'''
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def __init__(self):
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self._data = {}
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self._all_possible_part_policy = {}
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self._push_handlers = {}
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self._pull_handlers = {}
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# Store all graph data name
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self._gdata_name_list = set()
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@property
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def all_possible_part_policy(self):
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"""Get all possible partition policies"""
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return self._all_possible_part_policy
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@property
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def num_servers(self):
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"""Get the number of servers"""
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return 1
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def barrier(self):
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'''barrier'''
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def register_push_handler(self, name, func):
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'''register push handler'''
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self._push_handlers[name] = func
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def register_pull_handler(self, name, func):
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'''register pull handler'''
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self._pull_handlers[name] = func
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def add_data(self, name, tensor, part_policy):
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'''add data to the client'''
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self._data[name] = tensor
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self._gdata_name_list.add(name)
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if part_policy.policy_str not in self._all_possible_part_policy:
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self._all_possible_part_policy[part_policy.policy_str] = part_policy
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def init_data(self, name, shape, dtype, part_policy, init_func, is_gdata=True):
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'''add new data to the client'''
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self._data[name] = init_func(shape, dtype)
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if part_policy.policy_str not in self._all_possible_part_policy:
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self._all_possible_part_policy[part_policy.policy_str] = part_policy
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if is_gdata:
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self._gdata_name_list.add(name)
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def delete_data(self, name):
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'''delete the data'''
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del self._data[name]
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def data_name_list(self):
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'''get the names of all data'''
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return list(self._data.keys())
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def gdata_name_list(self):
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'''get the names of graph data'''
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return list(self._gdata_name_list)
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def get_data_meta(self, name):
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'''get the metadata of data'''
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return F.dtype(self._data[name]), F.shape(self._data[name]), None
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def push(self, name, id_tensor, data_tensor):
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'''push data to kvstore'''
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if name in self._push_handlers:
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self._push_handlers[name](self._data, name, id_tensor, data_tensor)
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else:
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F.scatter_row_inplace(self._data[name], id_tensor, data_tensor)
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def pull(self, name, id_tensor):
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'''pull data from kvstore'''
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if name in self._pull_handlers:
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return self._pull_handlers[name](self._data, name, id_tensor)
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else:
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return F.gather_row(self._data[name], id_tensor)
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def map_shared_data(self, partition_book):
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'''Mapping shared-memory tensor from server to client.'''
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def count_nonzero(self, name):
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"""Count nonzero value by pull request from KVServers.
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Parameters
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----------
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name : str
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data name
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Returns
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-------
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int
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the number of nonzero in this data.
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"""
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return F.count_nonzero(self._data[name])
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