wehub-resource-sync
27 lines
740 B
Python
27 lines
740 B
Python
"""Define utility functions for shared memory."""
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from .. import backend as F, ndarray as nd
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from .._ffi.ndarray import empty_shared_mem
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DTYPE_DICT = F.data_type_dict
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DTYPE_DICT = {DTYPE_DICT[key]: key for key in DTYPE_DICT}
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def _get_ndata_path(graph_name, ndata_name):
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return "/" + graph_name + "_node_" + ndata_name
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def _get_edata_path(graph_name, edata_name):
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return "/" + graph_name + "_edge_" + edata_name
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def _to_shared_mem(arr, name):
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dlpack = F.zerocopy_to_dlpack(arr)
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dgl_tensor = nd.from_dlpack(dlpack)
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new_arr = empty_shared_mem(
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name, True, F.shape(arr), DTYPE_DICT[F.dtype(arr)]
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)
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dgl_tensor.copyto(new_arr)
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dlpack = new_arr.to_dlpack()
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return F.zerocopy_from_dlpack(dlpack)
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