corehalt edited a comment on issue #4919: [Relay][Pass] Don't consider constants as free vars in MergeComposite URL: https://github.com/apache/incubator-tvm/pull/4919#issuecomment-591286696 > I have a feeling you may be able to get around this problem by using bind_params_by_name. I have to do this when using merge composite because weight parameters are still treating as variables until this pass it called, at which time they are replaced with constants. > > Could you try running: > > ``` > f = relay.build_module.bind_params_by_name(mod["main"], params) > mod = tvm.IRModule() > mod["main"] = f > ``` > > before the merge composite? @mbaret @soiferj I tried to call `bind_params_by_name()` before merge composite. If I don't call `bind_params_by_name()` I get something like: ``` %155 = nn.relu(%154) /* ty=Tensor[(1, 1024, 7, 7), float32] */; %157 = fn (%scompiler_input52: Tensor[(1, 1024, 7, 7), float32], %scompiler_input53: Tensor[(1024, 1024, 1, 1), float32], Compiler="scompiler", ExternalSymbol="scompiler_0", Primitive=1) -> Tensor[(1, 1024, 7, 7), float32] { %156 = fn (%x26: Tensor[(1, 1024, 7, 7), float32], %y26: Tensor[(1024, 1024, 1, 1), float32], Primitive=1, Composite="conv") -> Tensor[(1, 1024, 7, 7), float32] { nn.conv2d(%x26, %y26, padding=[0, 0, 0, 0], channels=1024, kernel_size=[1, 1]) /* ty=Tensor[(1, 1024, 7, 7), float32] */ }; %156(%scompiler_input52, %scompiler_input53) /* ty=Tensor[(1, 1024, 7, 7), float32] */ }; %158 = %157(%155, %separable_conv_block_13_conv2_weight) /* ty=Tensor[(1, 1024, 7, 7), float32] */; ``` But if I call `bind_params_by_name()` I can see something different: ``` %129 = nn.relu(%128) /* ty=Tensor[(1, 1024, 7, 7), float32] */; %131 = fn (%scompiler_input52: Tensor[(1, 1024, 7, 7), float32], %scompiler_input53: Tensor[(1024, 1024, 1, 1), float32], Compiler="scompiler", ExternalSymbol="scompiler_0", Primitive=1) -> Tensor[(1, 1024, 7, 7), float32] { %130 = fn (%x26: Tensor[(1, 1024, 7, 7), float32], %y26: Tensor[(1024, 1024, 1, 1), float32], Primitive=1, Composite="conv") -> Tensor[(1, 1024, 7, 7), float32] { nn.conv2d(%x26, %y26, padding=[0, 0, 0, 0], channels=1024, kernel_size=[1, 1]) /* ty=Tensor[(1, 1024, 7, 7), float32] */ }; %130(%scompiler_input52, %scompiler_input53) /* ty=Tensor[(1, 1024, 7, 7), float32] */ }; %132 = %131(%129, meta[relay.Constant][52] /* ty=Tensor[(1024, 1024, 1, 1), float32] */ /* ty=Tensor[(1024, 1024, 1, 1), float32] */) /* ty=Tensor[(1, 1024, 7, 7), float32] */; ``` The thing is that later `meta[relay.Constant][52]` is exposed as a Relay.VarNode on the codegen anyway. Is there any way of accessing these constants from a custom codegen?
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