UndefVarError(:destroy_handle!) in GC finalizer during multi-threaded GPU operations
Open
Nobody has claimed this yet.
bug
- Dominant language
- Julia
- Stars
- 344
- Forks
- 79
- Avg merge
- 2d 23h
- Merged PRs (30d)
- 27
Description
Questionnaire
- Does ROCm works for you outside of Julia, e.g. C/C++/Python?
Yes - Post output of
rocminfo.
(truncated)
$ /opt/rocm-7.0.0/bin/rocminfo 2>&1
ROCk module version 6.16.6 is loaded
=====================
HSA System Attributes
=====================
Runtime Version: 1.18
Runtime Ext Version: 1.11
System Timestamp Freq.: 1000.000000MHz
Sig. Max Wait Duration: 18446744073709551615 (0xFFFFFFFFFFFFFFFF) (timestamp count)
Machine Model: LARGE
System Endianness: LITTLE
Mwaitx: DISABLED
XNACK enabled: NO
DMAbuf Support: YES
VMM Support: YES
==========
HSA Agents
==========
*******
Agent 1
*******
Name: AMD EPYC 9554 64-Core Processor
Uuid: CPU-XX
Marketing Name: AMD EPYC 9554 64-Core Processor
Vendor Name: CPU
Feature: None specified
Profile: FULL_PROFILE
Float Round Mode: NEAR
Max Queue Number: 0(0x0)
Queue Min Size: 0(0x0)
Queue Max Size: 0(0x0)
Queue Type: MULTI
Node: 0
Device Type: CPU
Cache Info:
L1: 32768(0x8000) KB
Chip ID: 0(0x0)
ASIC Revision: 0(0x0)
Cacheline Size: 64(0x40)
Max Clock Freq. (MHz): 3762
BDFID: 0
Internal Node ID: 0
Compute Unit: 128
SIMDs per CU: 0
Shader Engines: 0
Shader Arrs. per Eng.: 0
WatchPts on Addr. Ranges:1
Memory Properties:
Features: None
Pool Info:
Pool 1
Segment: GLOBAL; FLAGS: FINE GRAINED
Size: 792357308(0x2f3a69bc) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 2
Segment: GLOBAL; FLAGS: EXTENDED FINE GRAINED
Size: 792357308(0x2f3a69bc) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 3
Segment: GLOBAL; FLAGS: KERNARG, FINE GRAINED
Size: 792357308(0x2f3a69bc) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 4
Segment: GLOBAL; FLAGS: COARSE GRAINED
Size: 792357308(0x2f3a69bc) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
ISA Info:
*******
Agent 2
*******
Name: AMD EPYC 9554 64-Core Processor
Uuid: CPU-XX
Marketing Name: AMD EPYC 9554 64-Core Processor
Vendor Name: CPU
Feature: None specified
Profile: FULL_PROFILE
Float Round Mode: NEAR
Max Queue Number: 0(0x0)
Queue Min Size: 0(0x0)
Queue Max Size: 0(0x0)
Queue Type: MULTI
Node: 1
Device Type: CPU
Cache Info:
L1: 32768(0x8000) KB
Chip ID: 0(0x0)
ASIC Revision: 0(0x0)
Cacheline Size: 64(0x40)
Max Clock Freq. (MHz): 3762
BDFID: 0
Internal Node ID: 1
Compute Unit: 128
SIMDs per CU: 0
Shader Engines: 0
Shader Arrs. per Eng.: 0
WatchPts on Addr. Ranges:1
Memory Properties:
Features: None
Pool Info:
Pool 1
Segment: GLOBAL; FLAGS: FINE GRAINED
Size: 792587472(0x2f3decd0) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 2
Segment: GLOBAL; FLAGS: EXTENDED FINE GRAINED
Size: 792587472(0x2f3decd0) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 3
Segment: GLOBAL; FLAGS: KERNARG, FINE GRAINED
Size: 792587472(0x2f3decd0) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 4
Segment: GLOBAL; FLAGS: COARSE GRAINED
Size: 792587472(0x2f3decd0) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
ISA Info:
*******
Agent 3
*******
Name: gfx942
Uuid: GPU-e647a64c72074433
Marketing Name: AMD Instinct MI300X
Vendor Name: AMD
Feature: KERNEL_DISPATCH
Profile: BASE_PROFILE
Float Round Mode: NEAR
Max Queue Number: 128(0x80)
Queue Min Size: 64(0x40)
Queue Max Size: 131072(0x20000)
Queue Type: MULTI
Node: 2
Device Type: GPU
Cache Info:
L1: 32(0x20) KB
L2: 4096(0x1000) KB
L3: 262144(0x40000) KB
Chip ID: 29857(0x74a1)
ASIC Revision: 1(0x1)
Cacheline Size: 128(0x80)
Max Clock Freq. (MHz): 2100
BDFID: 1280
Internal Node ID: 2
Compute Unit: 304
SIMDs per CU: 4
Shader Engines: 32
Shader Arrs. per Eng.: 1
WatchPts on Addr. Ranges:4
Coherent Host Access: FALSE
Memory Properties:
Features: KERNEL_DISPATCH
Fast F16 Operation: TRUE
Wavefront Size: 64(0x40)
Workgroup Max Size: 1024(0x400)
Workgroup Max Size per Dimension:
x 1024(0x400)
y 1024(0x400)
z 1024(0x400)
Max Waves Per CU: 32(0x20)
Max Work-item Per CU: 2048(0x800)
Grid Max Size: 4294967295(0xffffffff)
Grid Max Size per Dimension:
x 2147483647(0x7fffffff)
y 65535(0xffff)
z 65535(0xffff)
Max fbarriers/Workgrp: 32
Packet Processor uCode:: 191
SDMA engine uCode:: 25
IOMMU Support:: None
Pool Info:
Pool 1
Segment: GLOBAL; FLAGS: COARSE GRAINED
Size: 201310208(0xbffc000) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:2048KB
Alloc Alignment: 4KB
Accessible by all: FALSE
Pool 2
Segment: GLOBAL; FLAGS: EXTENDED FINE GRAINED
Size: 201310208(0xbffc000) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:2048KB
Alloc Alignment: 4KB
Accessible by all: FALSE
Pool 3
Segment: GLOBAL; FLAGS: FINE GRAINED
Size: 201310208(0xbffc000) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Recommended Granule:2048KB
Alloc Alignment: 4KB
Accessible by all: FALSE
Pool 4
Segment: GROUP
Size: 64(0x40) KB
Allocatable: FALSE
Alloc Granule: 0KB
Alloc Recommended Granule:0KB
Alloc Alignment: 0KB
Accessible by all: FALSE
ISA Info:
ISA 1
Name: amdgcn-amd-amdhsa--gfx942:sramecc+:xnack-
Machine Models: HSA_MACHINE_MODEL_LARGE
Profiles: HSA_PROFILE_BASE
Default Rounding Mode: NEAR
Default Rounding Mode: NEAR
Fast f16: TRUE
Workgroup Max Size: 1024(0x400)
Workgroup Max Size per Dimension:
x 1024(0x400)
y 1024(0x400)
z 1024(0x400)
Grid Max Size: 4294967295(0xffffffff)
Grid Max Size per Dimension:
x 2147483647(0x7fffffff)
y 65535(0xffff)
z 65535(0xffff)
FBarrier Max Size: 32
ISA 2
Name: amdgcn-amd-amdhsa--gfx9-4-generic:sramecc+:xnack-
Machine Models: HSA_MACHINE_MODEL_LARGE
Profiles: HSA_PROFILE_BASE
Default Rounding Mode: NEAR
Default Rounding Mode: NEAR
Fast f16: TRUE
Workgroup Max Size: 1024(0x400)
Workgroup Max Size per Dimension:
x 1024(0x400)
y 1024(0x400)
z 1024(0x400)
Grid Max Size: 4294967295(0xffffffff)
Grid Max Size per Dimension:
x 2147483647(0x7fffffff)
y 65535(0xffff)
z 65535(0xffff)
FBarrier Max Size: 32
- Post output of
AMDGPU.versioninfo()if possible.
[ Info: AMDGPU versioninfo
┌───────────┬──────────────────┬───────────┬─────────────────────────────────────────────────────────────────────────────────────────┐
│ Available │ Name │ Version │ Path │
├───────────┼──────────────────┼───────────┼─────────────────────────────────────────────────────────────────────────────────────────┤
│ + │ LLD │ - │ /opt/rocm-7.0.0/lib/llvm/bin/ld.lld │
│ + │ Device Libraries │ - │ /home/ipasichn/.julia/artifacts/b46ab46ef568406312e5f500efb677511199c2f9/amdgcn/bitcode │
│ + │ HIP │ 7.0.51831 │ /opt/rocm-7.0.0/lib/libamdhip64.so │
│ + │ rocBLAS │ 5.0.0 │ /opt/rocm-7.0.0/lib/librocblas.so │
│ + │ rocSOLVER │ 3.30.0 │ /opt/rocm-7.0.0/lib/librocsolver.so │
│ + │ rocSPARSE │ 4.0.2 │ /opt/rocm-7.0.0/lib/librocsparse.so │
│ + │ rocRAND │ 4.2.0 │ /opt/rocm-7.0.0/lib/librocrand.so │
│ + │ rocFFT │ 1.0.34 │ /opt/rocm-7.0.0/lib/librocfft.so │
│ + │ MIOpen │ 3.5.0 │ /opt/rocm-7.0.0/lib/libMIOpen.so │
└───────────┴──────────────────┴───────────┴─────────────────────────────────────────────────────────────────────────────────────────┘
[ Info: AMDGPU devices
┌────┬─────────────────────┬────────────────────────┬───────────┬─────────────┬───────────────┐
│ Id │ Name │ GCN arch │ Wavefront │ Memory │ Shared Memory │
├────┼─────────────────────┼────────────────────────┼───────────┼─────────────┼───────────────┤
│ 1 │ AMD Instinct MI300X │ gfx942:sramecc+:xnack- │ 64 │ 191.984 GiB │ 64.000 KiB │
└────┴─────────────────────┴────────────────────────┴───────────┴─────────────┴───────────────┘
Reproducing the bug
Multiple Julia threads performing concurrent GPU linear algebra (gemm!, gesvd!) via Threads.@threads trigger UndefVarError(var=:destroy_handle!) in GC finalizers at process exit. The error originates in library_state (cache.jl) when finalizers attempt to clean up rocBLAS handles allocated by worker threads.
Computation completes correctly — errors appear only during ijl_atexit_hook when the GC runs remaining finalizers. Likely related to #697 (fixed by #705), but the destroy_handle! lookup failure is a distinct code path not covered by that fix.
Reproducer: julia -t 8 examples/amdgpu_thread_reproducer.jl (no error with -t 1)
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the attached amdgpu_thread_reproducer.zip with the reported Julia, ROCm 7.0.0, and MI300X environment, then inspect the full stack trace around UndefVarError(:destroy_handle!) in the GC finalizer. Compare single-threaded and multi-threaded GPU operations and identify the finalizer path involved. Done means the reproducer no longer reports this error during multi-threaded operations.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100