NVIDIA / NVIDIA/cuda-quantum

[NVQC] New launch kernel is failing for NVQC

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#2,146 3 comments 0 reactions 0 assignees View on GitHub

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Description

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Describe the bug

A code with state pointer argument (targettests/Remote-Sim/state_init.cpp) currently fails for NVQC with a message from old argument synthesis:

error: 'func.func' op synthesis: unsupported argument type for remote devices and simulators: state* 

Note that command line tells to execute the new argument synthesis:

nvq++ %cpp_std --enable-mlir --target remote-mqpu -fkernel-exec-kind=2 %s -o %t && %t | FileCheck %s
Steps to reproduce the bug

Run targettests/Remote-Sim/state_init.cpp for NVQC

Expected behavior

The test should execute successfully.

Is this a regression? If it is, put the last known working version (or commit) here.

Not a regression

Environment
  • CUDA Quantum version:
  • Python version:
  • C++ compiler:
  • Operating system:
Suggestions

No response

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with targettests/Remote-Sim/state_init.cpp and run the provided nvq++ command for NVQC. Trace why the state pointer reaches old argument synthesis despite the new argument-synthesis flag, and consider the work complete when the test executes successfully without the unsupported argument type error.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
quantum-computing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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