(dim, dim_per_gp, num_groups)
return group_gn
get number of groups used by GroupNorm, based on number of channels.
get number of groups used by GroupNorm, based on number of channels.
get number of groups used by GroupNorm based on number of channels .
def get_group_gn(dim, dim_per_gp, num_groups):
    """get number of groups used by GroupNorm, based on number of channels."""
    assert dim_per_gp == -1 or num_groups == -1, \
        "GroupNorm: can only specify G or C/G."

    if dim_per_gp > 0:
        assert dim % dim_per_gp == 0, \
            "dim: {}, dim_per_gp: {}".format(dim, dim_per_gp)
        group_gn = dim // dim_per_gp
    else:
        assert dim % num_groups == 0, \
            "dim: {}, num_groups: {}".format(dim, num_groups)
        group_gn = num_groups

    return group_gn
def get_group_gn ( dim , dim_per_gp , num_groups ) : assert dim_per_gp == - 1 or num_groups == - 1 , "GroupNorm: can only specify G or C/G." if dim_per_gp > 0 : assert dim % dim_per_gp == 0 , "dim: {}, dim_per_gp: {}" . format ( dim , dim_per_gp ) group_gn = dim // dim_per_gp else : assert dim % num_groups == 0 , "dim: {}, num_groups: {}" . format ( dim , num_groups ) group_gn = num_groups return group_gn