[Apache TVM Discuss] [Development] [VTA] VTA on ZCU102

[Eamicheal via Apache TVM Discuss]

@imharish63 I totally understand, you can also download the already created 
image of ZCU102 v2.6 
[HERE](https://drive.google.com/file/d/1SYhQXk4XLaptZny8W4jPVhq4ClDbfhMp/view?usp=sharing)
 it may make things a lot easier.





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[Apache TVM Discuss] [Development] Relay Function virtual_device property

[Rafael Stahl via Apache TVM Discuss]

While switching to TVMC, I noticed a "virtual_device" property on the top-level 
relay module function. It was not properly propagated through my relay passes 
and caused an assertion in lowering to TE, with:

Check failed: (!virtual_device->IsFullyUnconstrained()) is false

at:

```
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/driver/tvmc/__main__.py", 
line 24, in 
tvmc.main.main()
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/driver/tvmc/main.py", line 
115, in main
sys.exit(_main(sys.argv[1:]))
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/driver/tvmc/main.py", line 
103, in _main
return args.func(args)
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/driver/tvmc/compiler.py", 
line 173, in drive_compile
compile_model(
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/driver/tvmc/compiler.py", 
line 337, in compile_model
graph_module = build(
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/driver/tvmc/compiler.py", 
line 410, in build
return relay.build(
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/relay/build_module.py", line 
431, in build
graph_json, runtime_mod, params = bld_mod.build(
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/relay/build_module.py", line 
154, in build
self._build(mod, raw_targets, executor, runtime, workspace_memory_pools, 
mod_name)
  File "/home/user1/mlenv/deps/src/tvm/python/tvm/_ffi/_ctypes/packed_func.py", 
line 237, in __call__
raise get_last_ffi_error()
tvm._ffi.base.TVMError: Traceback (most recent call last):
  29: TVMFuncCall
  28: 
tvm::runtime::PackedFuncObj::Extractor, std::allocator > const&, 
tvm::runtime::ObjectPtr 
const&)::{lambda(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*)#3}> 
>::Call(tvm::runtime::PackedFuncObj const*, tvm::runtime::TVMArgs, 
tvm::runtime::TVMRetValue*)
  27: tvm::relay::backend::RelayBuildModule::BuildRelay(tvm::IRModule, 
tvm::runtime::String const&)
  26: 
tvm::runtime::PackedFuncObj::Extractor, std::allocator > const&, 
tvm::runtime::ObjectPtr 
const&)::{lambda(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*)#2}> 
>::Call(tvm::runtime::PackedFuncObj const*, tvm::runtime::TVMArgs, 
tvm::runtime::TVMRetValue*)
  25: tvm::relay::backend::AOTExecutorCodegen::Codegen(tvm::IRModule, 
tvm::relay::Function, tvm::runtime::String)
  24: tvm::transform::Pass::operator()(tvm::IRModule) const
  23: tvm::transform::Pass::operator()(tvm::IRModule, 
tvm::transform::PassContext const&) const
  22: tvm::transform::SequentialNode::operator()(tvm::IRModule, 
tvm::transform::PassContext const&) const
  21: tvm::transform::Pass::operator()(tvm::IRModule, 
tvm::transform::PassContext const&) const
  20: tvm::transform::ModulePassNode::operator()(tvm::IRModule, 
tvm::transform::PassContext const&) const
  19: 
_ZN3tvm7runtime13PackedFuncObj9ExtractorINS0_16PackedFuncSubObjIZNS0_15TypedPackedFuncIFNS_8IRModuleES5_NS_9transform11PassContextEEE17AssignTypedLambdaIZNS_5relay3tec7LowerTEENS0_6StringENS_17CompilationConfigESt8functionIFvNS_8BaseFuncUlS5_S7_E_EEvT_EUlRKNS0_7TVMArgsEPNS0_11TVMRetValueEE_EEE4CallEPKS1_SL_SP_
  18: tvm::relay::tec::LowerTE(tvm::IRModule const&, tvm::runtime::String 
const&, std::function, tvm::CompilationConfig)
  17: tvm::transform::Pass::operator()(tvm::IRModule) const
  16: tvm::transform::Pass::operator()(tvm::IRModule, 
tvm::transform::PassContext const&) const
  15: tvm::relay::transform::FunctionPassNode::operator()(tvm::IRModule, 
tvm::transform::PassContext const&) const
  14: 
_ZN3tvm7runtime13PackedFuncObj9ExtractorINS0_16PackedFuncSubObjIZNS0_15TypedPackedFuncIFNS_5relay8FunctionES6_NS_8IRModuleENS_9transform11PassContextEEE17AssignTypedLambdaIZNS5_3tec15LowerTensorExprERKNS0_6StringENSD_10TECompilerESt8functionIFvNS_8BaseFuncEEENS_17CompilationConfigEEUlS6_S7_S9_E_EEvT_EUlRKNS0_7TVMArgsEPNS0_11TVMRetValueEE_EEE4CallEPKS1_SP_ST_
  13: tvm::relay::ExprMutator::VisitExpr(tvm::RelayExpr const&)
  12: _ZZN3tvm5relay11ExprFuncto
  11: 
tvm::relay::transform::DeviceAwareExprMutator::VisitExpr_(tvm::relay::FunctionNode
 const*)
  10: 
tvm::relay::tec::LowerTensorExprMutator::DeviceAwareVisitExpr_(tvm::relay::FunctionNode
 const*)
  9: _ZN3tvm5relay9tr
  8: tvm::relay::ExprMutator::VisitExpr_(tvm::relay::FunctionNode const*)
  7: tvm::relay::ExprMutator::VisitExpr(tvm::RelayExpr const&)
  6: _ZZN3tvm5relay11ExprFuncto
  5: 
tvm::relay::transform::DeviceAwareExprMutator::VisitExpr_(tvm::relay::LetNode 
const*)
  4: 
tvm::relay::tec::LowerTensorExprMutator::PreVisitLetBinding_(tvm::relay::Var 
const&, tvm::RelayExpr const&)
  3: tvm::relay::ExprMutator::VisitExpr(tvm::RelayExpr const&)
  2: _ZZN3tvm5relay11ExprFuncto
  1: 
tvm::relay::transform::DeviceAwareExprMutator::VisitExpr_(tvm::relay::CallNode 
const*)
  0: 
tvm::relay::tec::LowerTensorExprMutator::DeviceAwareVisitExpr_(tvm::relay::CallNode
 const*)
  File "/home/user1/mlenv/deps/src/tvm/src/relay/backend/te_compiler.cc", line 
885
```

I noticed that this property is sometimes updated manually a