farshidsp commented on PR #13354:
URL: https://github.com/apache/tvm/pull/13354#issuecomment-1351777980

   In the middle of tuning it give the following error:
   ```
   E           tvm._ffi.base.TVMError: Traceback (most recent call last):
   E             10: TVMFuncCall
   E             9: _ZN3tvm7runtime13Pac
   E             8: void tvm::runtime::TypedPackedFunc<void 
(tvm::meta_schedule::TaskScheduler, 
tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>)>::AssignTypedLambda<tvm::runtime::Registry&
 tvm::runtime::Registry::set_body_method<tvm::meta_schedule::TaskScheduler, 
tvm::meta_schedule::TaskSchedulerNode, void, 
tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>, void>(void 
(tvm::meta_schedule::TaskSchedule
 rNode::*)(tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>))::'lambda'(tvm::meta_schedule::TaskScheduler,
 tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>)>(tvm::runtime::Registry& 
tvm::runtime::Registry::set_body_method<tvm::meta_schedule::TaskScheduler, 
tvm::meta_schedule::TaskSchedulerNode, void, 
tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, 
 int, int, int, tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>, void>(void 
(tvm::meta_schedule::TaskSchedulerNode::*)(tvm::runtime::Array<tvm::meta_schedule::TuneContext,
 void>, tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>))::'lambda'(tvm::meta_schedule::TaskScheduler,
 tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, tvm::runtime:
 :Optional<tvm::meta_schedule::CostModel>), std::__1::basic_string<char, 
std::__1::char_traits<char>, std::__1::allocator<char> 
>)::'lambda'(tvm::runtime::TVMArgs const&, 
tvm::runtime::TVMRetValue*)::operator()(tvm::runtime::TVMArgs const&, 
tvm::runtime::TVMRetValue*) const
   E             7: tvm::runtime::Registry& 
tvm::runtime::Registry::set_body_method<tvm::meta_schedule::TaskScheduler, 
tvm::meta_schedule::TaskSchedulerNode, void, 
tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>, void>(void 
(tvm::meta_schedule::TaskSchedulerNode::*)(tvm::runtime::Array<tvm::meta_schedule::TuneContext,
 void>, tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>))::'lambda'(tvm::meta_schedule::TaskScheduler,
 tvm::runtime::Array<tvm::meta_schedule::
 TuneContext, void>, tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>)::operator()(tvm::meta_schedule::TaskScheduler,
 tvm::runtime::Array<tvm::meta_schedule::TuneContext, void>, 
tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>) const
   E             6: 
tvm::meta_schedule::GradientBasedNode::Tune(tvm::runtime::Array<tvm::meta_schedule::TuneContext,
 void>, tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>)
   E             5: 
tvm::meta_schedule::TaskSchedulerNode::Tune(tvm::runtime::Array<tvm::meta_schedule::TuneContext,
 void>, tvm::runtime::Array<tvm::FloatImm, void>, int, int, int, 
tvm::meta_schedule::Builder, tvm::meta_schedule::Runner, 
tvm::runtime::Array<tvm::meta_schedule::MeasureCallback, void>, 
tvm::runtime::Optional<tvm::meta_schedule::Database>, 
tvm::runtime::Optional<tvm::meta_schedule::CostModel>)
   E             4: tvm::meta_schedule::GradientBasedNode::NextTaskId()
   E             3: tvm::meta_schedule::GradientBasedNode::JoinRunningTask(int)
   E             2: tvm::meta_schedule::TaskSchedulerNode::JoinRunningTask(int)
   E             1: 
tvm::meta_schedule::UpdateCostModelNode::Apply(tvm::meta_schedule::TaskScheduler
 const&, int, tvm::runtime::Array<tvm::meta_schedule::MeasureCandidate, void> 
const&, tvm::runtime::Array<tvm::meta_schedule::BuilderResult, void> const&, 
tvm::runtime::Array<tvm::meta_schedule::RunnerResult, void> const&)
   E             0: tvm::runtime::Optional<tvm::runtime::Array<tvm::FloatImm, 
void> >::value() const
   E             File 
"/home/fparizi/src/tvm_src/include/tvm/runtime/container/optional.h", line 93
   E           TVMError: 
   E           ---------------------------------------------------------------
   E           An error occurred during the execution of TVM.
   E           For more information, please see: 
https://tvm.apache.org/docs/errors.html
   E           ---------------------------------------------------------------
   E             Check failed: (data_ != nullptr) is false:
   ```


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