JuliaGPU/CUDA.jl

Wrong source paths in debug info

Open

#2,460 opened on Aug 6, 2024

View on GitHub
 (0 comments) (0 reactions) (0 assignees)Julia (1,408 stars) (274 forks)batch import
bugcuda kernelsgood first issue

Description

julia> @device_code_ptx raw=true CuArray([1]).+1

	.file	1 "/home/tim/.julia/packages/GPUArrays/8Y80U/src/host/broadcast.jl"
	.file	2 "./int.jl"
	.file	3 "/home/tim/.julia/packages/GPUArrays/8Y80U/src/device/indexing.jl"
	.file	4 "./essentials.jl"
	.file	5 "/home/tim/.julia/packages/LLVM/5DlHM/src/interop/base.jl"
	.file	6 "./broadcast.jl"
	.file	7 "/home/tim/Julia/pkg/CUDA/src/device/array.jl"
	.file	8 "/home/tim/.julia/packages/LLVM/5DlHM/src/interop/pointer.jl"
	.file	9 "./none"

Only package paths seem to be reported correctly. We should try to resolve these to the Julia BINDIR for a better profiling experience.

Contributor guide

Tech stack
None
Domain
developer experienceobservability
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Julia programmingLLVM debug infoCUDA toolchain
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate how source file paths are generated in Julia's LLVM pass for CUDA kernels by examining files like host/broadcast.jl and device/indexing.jl in GPUArrays, and related code in CUDA.jl. Look for how the path mapping to Julia's BINDIR can be implemented. Check the LLVM.interop modules for any existing path resolution logic. The issue suggests resolving paths to the Julia BINDIR for a better profiling experience.