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Crash when taking gradient with ParameterHandling's unflatten
I am working on a simulator and I'd like to take the gradient through it as it's part of an optimization problem. It is part of private work and I am unable to create a small MWE. However, I did not see a similar error already reported here, so I just wanted to report it, though I understand it will be hard for your team to debug without an MWE. Here it is:
julia> function f(x, params)
-obj_solar(unflatten(collect(x)), params)
end
f (generic function with 1 method)
julia> @time f(x0_vec, params)
0.116539 seconds (415.21 k allocations: 18.287 MiB, 94.44% compilation time)
-2.4909139880854785e6
julia> df_dx = zeros(2)
2-element Vector{Float64}:
0.0
0.0
julia> autodiff(f, Active, Duplicated(x0_vec, df_dx), params)
warning: didn't implement memmove, using memcpy as fallback which can result in errors
{[0]:Float@double, [8]:Float@double, [16]:Float@double, [24]:Float@double, [32]:Float@double, [40]:Float@double, [48]:Float@double, [56]:Float@double, [64]:Float@double, [72]:Float@double, [80]:Float@double, [88]:Float@double, [96]:Integer, [97]:Integer, [98]:Integer, [99]:Integer, [100]:Integer, [101]:Integer, [102]:Integer, [103]:Integer, [104]:Integer, [105]:Integer, [106]:Integer, [107]:Integer, [108]:Integer, [109]:Integer, [110]:Integer, [111]:Integer, [112]:Integer, [113]:Integer, [114]:Integer, [115]:Integer, [116]:Integer, [117]:Integer, [118]:Integer, [119]:Integer, [120]:Integer, [121]:Integer, [122]:Integer, [123]:Integer, [124]:Integer, [125]:Integer, [126]:Integer, [127]:Integer, [128]:Float@double, [136]:Float@double, [144]:Float@double, [152]:Float@double, [160]:Float@double, [168]:Float@double, [176]:Float@double, [184]:Float@double, [192]:Float@double, [200]:Float@double, [208]:Float@double, [216]:Float@double}
canonicalizing 16
Assertion failed: ((size_t)pair.first[0] < len), function CanonicalizeValue, file /workspace/srcdir/Enzyme/enzyme/Enzyme/TypeAnalysis/TypeTree.h, line 605.
signal (6): Abort trap: 6
in expression starting at REPL[33]:1
__pthread_kill at /usr/lib/system/libsystem_kernel.dylib (unknown line)
Allocations: 162259311 (Pool: 162204319; Big: 54992); GC: 85
[1] 18437 abort /Applications/Julia-1.7.app/Contents/Resources/julia/bin/julia
I'm using Julia 1.7.1 and Enzyme 0.8.1. I did see in the docs that f
cannot allocate any memory. I suspect this may be the root issue, though eliminating allocations may be a big task for my f
. So I wanted to check in here to see if this is likely to be the cause.
I'm using Julia 1.7.1 and Enzyme 0.8.1. I did see in the docs that f cannot allocate any memory. I suspect this may be the root issue, though eliminating allocations may be a big task for my f. So I wanted to check in here to see if this is likely to be the cause.
On Enzyme 0.8 you should be able to allocate memory, but avoiding allocations is still recommended.
Without a MWE it's going to be hard to figure out, but maybe @wsmoses has some ideas.
Yeah this is not related to any memory allocation, but an analysis pass that preprocesses the code found an inconsistent state. Unfortunately this will be difficult to analyze without the code. However, if you enable debug prints for that analysis Enzyme.API.printtype!(true), that may contain enough information to determine the cause.
I totally understand about difficulty debugging without an MWE. Just in case you can figure something out just from the debug print, here it is: https://gist.github.com/ianfiske/53161351f1d9fe24b843c22aab083951
Can you actually add both Enzyme.API.printtype!(true) and Enzyme.API.print!(true) ?
There doesn't appear to be an Enzyme.API.print! function in my version. I did
Enzyme.API.printtype!(true)
Enzyme.API.printall!(true)
And updated the gist at https://gist.github.com/ianfiske/53161351f1d9fe24b843c22aab083951
after simplification :
define [2 x double] @preprocess_julia_ComposedFunction_8386([2 x double] %0, {} addrspace(10)* nonnull align 16 dereferenceable(40) %1) local_unnamed_addr #3 !dbg !411 {
entry:
%malloccall = tail call noalias i8* @malloc(i64 16), !enzyme_fromstack !4
%2 = bitcast i8* %malloccall to [2 x double]*
%malloccall1 = tail call noalias i8* @malloc(i64 224), !enzyme_fromstack !4
%3 = bitcast i8* %malloccall1 to { { [2 x { double, double, double, [2 x double], double }], { [2 x i64], [2 x i64], [2 x { { double, double, double, [2 x double], double } }] } } }*
%4 = addrspacecast { { [2 x { double, double, double, [2 x double], double }], { [2 x i64], [2 x i64], [2 x { { double, double, double, [2 x double], double } }] } } }* %3 to { { [2 x { double, double, double, [2 x double], double }], { [2 x i64], [2 x i64], [2 x { { double, double, double, [2 x double], double } }] } } } addrspace(11)*
%.fca.0.extract = extractvalue [2 x double] %0, 0
%.fca.0.gep = getelementptr inbounds [2 x double], { { [2 x { double, double, double, [2 x double], double }], { [2 x i64], [2 x i64], [2 x { { double, double, double, [2 x double], double } }] } } }* %3, i64 0, i64 0
store double %.fca.0.extract, double* %.fca.0.gep, align 8
%.fca.1.extract = extractvalue [2 x double] %0, 1
%.fca.1.gep = getelementptr inbounds [2 x double], { { [2 x { double, double, double, [2 x double], double }], { [2 x i64], [2 x i64], [2 x { { double, double, double, [2 x double], double } }] } } }* %3, i64 0, i64 1
store double %.fca.1.extract, double* %.fca.1.gep, align 8
%5 = bitcast [2 x double]* %2 to i8*
call void @llvm.lifetime.start.p0i8(i64 noundef 16, i8* noundef nonnull align 8 dereferenceable(16) %5) #14
%6 = call {}*** @julia.get_pgcstack(), !noalias !412
call fastcc void @julia____83_8389([2 x double]* noalias nocapture noundef nonnull writeonly sret([2 x double]) align 8 dereferenceable(16) %2, { { [2 x { double, double, double, [2 x double], double }], { [2 x i64], [2 x i64], [2 x { { double, double, double, [2 x double], double } }] } } } addrspace(11)* nocapture noundef nonnull readonly align 8 dereferenceable(224) %4, {} addrspace(10)* nonnull align 16 dereferenceable(40) %1) #3, !dbg !415, !noalias !412
%.sroa.0.0..sroa_idx = getelementptr inbounds [2 x double], [2 x double]* %2, i64 0, i64 0, !dbg !415
%.sroa.0.0.copyload = load double, double* %.sroa.0.0..sroa_idx, align 8, !dbg !415
%.sroa.2.0..sroa_idx3 = getelementptr inbounds [2 x double], [2 x double]* %2, i64 0, i64 1, !dbg !415
%.sroa.2.0.copyload = load double, double* %.sroa.2.0..sroa_idx3, align 8, !dbg !415
call void @llvm.lifetime.end.p0i8(i64 noundef 16, i8* noundef nonnull %5), !dbg !415
%.fca.0.insert = insertvalue [2 x double] undef, double %.sroa.0.0.copyload, 0
%.fca.1.insert = insertvalue [2 x double] %.fca.0.insert, double %.sroa.2.0.copyload, 1
ret [2 x double] %.fca.1.insert
}
analyzing function preprocess_julia_ComposedFunction_8386
+ knowndata: [2 x double] %0 : {[0]:Float@double, [8]:Float@double, [16]:Float@double, [24]:Float@double, [32]:Float@double, [40]:Float@double, [48]:Float@double, [56]:Float@double, [64]:Float@double, [72]:Float@double, [80]:Float@double, [88]:Float@double, [96]:Integer, [97]:Integer, [98]:Integer, [99]:Integer, [100]:Integer, [101]:Integer, [102]:Integer, [103]:Integer, [104]:Integer, [105]:Integer, [106]:Integer, [107]:Integer, [108]:Integer, [109]:Integer, [110]:Integer, [111]:Integer, [112]:Integer, [113]:Integer, [114]:Integer, [115]:Integer, [116]:Integer, [117]:Integer, [118]:Integer, [119]:Integer, [120]:Integer, [121]:Integer, [122]:Integer, [123]:Integer, [124]:Integer, [125]:Integer, [126]:Integer, [127]:Integer, [128]:Float@double, [136]:Float@double, [144]:Float@double, [152]:Float@double, [160]:Float@double, [168]:Float@double, [176]:Float@double, [184]:Float@double, [192]:Float@double, [200]:Float@double, [208]:Float@double, [216]:Float@double} - {}
So it looks like we're setting the arguments typetree here to something invalid (e.g. greater width than the actual register).
Figuring out what triggers this will be the problem. My guess looking here is that the derivative of this is being requested from a jl_apply_generic, so I wonder what Julia types are being parsed into typetrees.
Actually, I messed around with this a bit and got a pretty simple MWE:
using ParameterHandling
using Enzyme
Enzyme.API.printtype!(true)
Enzyme.API.printall!(true)
function objective(x)
(; a, b) = x
sum(a.^2 .+ b.^2)
end
x0 = (a=rand(10), b=rand(10))
x0_vec, unflatten = value_flatten(x0)
function f(x_vec)
objective(unflatten(x_vec))
end
f(x0_vec)
df_dx = ones(length(x0_vec))
autodiff(f, Const, Duplicated(x0_vec, df_dx))
Here's that log trace for the MWE: https://gist.github.com/ianfiske/a016e51054c3e08558a7393ebe6d5f98
Error is now coming from Julia's GC pass
julia: /buildworker/worker/package_linux64/build/src/llvm-late-gc-lowering.cpp:1463: State LateLowerGCFrame::LocalScan(llvm::Function&): Assertion `SRet' failed.
signal (6): Aborted
in expression starting at REPL[11]:1
gsignal at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
abort at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x7f8d617863f9)
__assert_fail at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
LocalScan at /buildworker/worker/package_linux64/build/src/llvm-late-gc-lowering.cpp:1463
runOnFunction at /buildworker/worker/package_linux64/build/src/llvm-late-gc-lowering.cpp:2675
_ZN4llvm13FPPassManager13runOnFunctionERNS_8FunctionE at /mnt/Data/git/Enzyme.jl/julia-1.7.2/bin/../lib/julia/libLLVM-12jl.so (unknown line)
_ZN4llvm13FPPassManager11runOnModuleERNS_6ModuleE at /mnt/Data/git/Enzyme.jl/julia-1.7.2/bin/../lib/julia/libLLVM-12jl.so (unknown line)
_ZN4llvm6legacy15PassManagerImpl3runERNS_6ModuleE at /mnt/Data/git/Enzyme.jl/julia-1.7.2/bin/../lib/julia/libLLVM-12jl.so (unknown line)
LLVMRunPassManager at /mnt/Data/git/Enzyme.jl/julia-1.7.2/bin/../lib/julia/libLLVM-12jl.so (unknown line)
LLVMRunPassManager at /home/wmoses/.julia/packages/LLVM/WjSQG/lib/12/libLLVM_h.jl:4741 [inlined]
run! at /home/wmoses/.julia/packages/LLVM/WjSQG/src/passmanager.jl:39 [inlined]
#81 at /mnt/Data/git/Enzyme.jl/src/compiler/optimize.jl:230
#ModulePassManager#64 at /home/wmoses/.julia/packages/LLVM/WjSQG/src/passmanager.jl:33
unknown function (ip: 0x7f8ceb6ce3ee)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2247 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
ModulePassManager at /home/wmoses/.julia/packages/LLVM/WjSQG/src/passmanager.jl:31
post_optimze! at /mnt/Data/git/Enzyme.jl/src/compiler/optimize.jl:227 [inlined]
post_optimze! at /mnt/Data/git/Enzyme.jl/src/compiler/optimize.jl:221 [inlined]
_thunk at /mnt/Data/git/Enzyme.jl/src/compiler.jl:5292 [inlined]
_thunk at /mnt/Data/git/Enzyme.jl/src/compiler.jl:5268
This particular issue is now a case of: https://github.com/EnzymeAD/Enzyme.jl/issues/337
Now reduced to a generic GC runtime error (but compiles successfully):
GC error (probable corruption) :
Allocations: 69053306 (Pool: 69024596; Big: 28710); GC: 77
Array{Float64, (10,)}[0.0708804, 0.420144, 0.516531, 0.895988, 0.949172, 0.153385, 0.254524, 0.0538723, 0.536238, 0.190113]
0x7f03ea302010: r-- Stack frame 0x7ffc85344e80 -- 0 of 8 (direct)
Unknown pc 0x7f045acde710 --- ABORTING !!!
signal (6): Aborted
in expression starting at none:0
gsignal at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
abort at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
gc_assert_datatype_fail at /buildworker/worker/package_linux64/build/src/gc.c:1657
gc_mark_loop at /buildworker/worker/package_linux64/build/src/gc.c:2711
_jl_gc_collect at /buildworker/worker/package_linux64/build/src/gc.c:3039
jl_gc_collect at /buildworker/worker/package_linux64/build/src/gc.c:3248
maybe_collect at /buildworker/worker/package_linux64/build/src/gc.c:882 [inlined]
jl_gc_pool_alloc at /buildworker/worker/package_linux64/build/src/gc.c:1209
jl_gc_alloc_ at /buildworker/worker/package_linux64/build/src/julia_internal.h:339 [inlined]
jl_gc_alloc at /buildworker/worker/package_linux64/build/src/gc.c:3290
_new_array_ at /buildworker/worker/package_linux64/build/src/array.c:127 [inlined]
_new_array at /buildworker/worker/package_linux64/build/src/array.c:193 [inlined]
jl_alloc_array_1d at /buildworker/worker/package_linux64/build/src/array.c:441
Array at ./boot.jl:457 [inlined]
Array at ./boot.jl:476 [inlined]
getindex at ./array.jl:411 [inlined]
BasicBlock at ./compiler/ssair/basicblock.jl:25 [inlined]
compute_basic_blocks at ./compiler/ssair/ir.jl:91
inflate_ir at ./compiler/ssair/legacy.jl:15
inflate_ir at ./compiler/ssair/legacy.jl:10
InliningTodo at ./compiler/ssair/inlining.jl:864
jfptr_InliningTodo_7482.clone_1 at /mnt/Data/git/Enzyme.jl/julia-1.7.2/lib/julia/sys.so (unknown line)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2247 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
resolve_todo at ./compiler/ssair/inlining.jl:795
analyze_method! at ./compiler/ssair/inlining.jl:851
analyze_single_call! at ./compiler/ssair/inlining.jl:1238
assemble_inline_todo! at ./compiler/ssair/inlining.jl:1419
ssa_inlining_pass! at ./compiler/ssair/inlining.jl:80
jfptr_ssa_inlining_passNOT._12916.clone_1 at /mnt/Data/git/Enzyme.jl/julia-1.7.2/lib/julia/sys.so (unknown line)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2247 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
run_passes at ./compiler/optimize.jl:307
optimize at ./compiler/optimize.jl:296 [inlined]
_typeinf at ./compiler/typeinfer.jl:255
typeinf at ./compiler/typeinfer.jl:209
abstract_call_method_with_const_args at ./compiler/abstractinterpretation.jl:557
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:113
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1900
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
abstract_call_method_with_const_args at ./compiler/abstractinterpretation.jl:557
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:113
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1900
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
typeinf_edge at ./compiler/typeinfer.jl:823 [inlined]
abstract_call_method at ./compiler/abstractinterpretation.jl:504
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:105
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_apply at ./compiler/abstractinterpretation.jl:987
abstract_call_known at ./compiler/abstractinterpretation.jl:1249
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1918
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
typeinf_edge at ./compiler/typeinfer.jl:823 [inlined]
abstract_call_method at ./compiler/abstractinterpretation.jl:504
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:105
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_apply at ./compiler/abstractinterpretation.jl:987
abstract_call_known at ./compiler/abstractinterpretation.jl:1249
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1918
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
typeinf_edge at ./compiler/typeinfer.jl:823 [inlined]
abstract_call_method at ./compiler/abstractinterpretation.jl:504
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:105
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_apply at ./compiler/abstractinterpretation.jl:987
abstract_call_known at ./compiler/abstractinterpretation.jl:1249
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1918
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
typeinf_edge at ./compiler/typeinfer.jl:823 [inlined]
abstract_call_method at ./compiler/abstractinterpretation.jl:504
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:105
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1918
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
typeinf_edge at ./compiler/typeinfer.jl:823 [inlined]
abstract_call_method at ./compiler/abstractinterpretation.jl:504
abstract_call_gf_by_type at ./compiler/abstractinterpretation.jl:105
abstract_call_known at ./compiler/abstractinterpretation.jl:1342
abstract_call at ./compiler/abstractinterpretation.jl:1397
abstract_call at ./compiler/abstractinterpretation.jl:1382
abstract_eval_statement at ./compiler/abstractinterpretation.jl:1534
typeinf_local at ./compiler/abstractinterpretation.jl:1918
typeinf_nocycle at ./compiler/abstractinterpretation.jl:2014
_typeinf at ./compiler/typeinfer.jl:226
typeinf at ./compiler/typeinfer.jl:209
typeinf_ext at ./compiler/typeinfer.jl:909
typeinf_ext_toplevel at ./compiler/typeinfer.jl:942
typeinf_ext_toplevel at ./compiler/typeinfer.jl:938
jfptr_typeinf_ext_toplevel_10577.clone_1 at /mnt/Data/git/Enzyme.jl/julia-1.7.2/lib/julia/sys.so (unknown line)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2247 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
jl_apply at /buildworker/worker/package_linux64/build/src/julia.h:1788 [inlined]
jl_type_infer at /buildworker/worker/package_linux64/build/src/gf.c:295
jl_generate_fptr at /buildworker/worker/package_linux64/build/src/jitlayers.cpp:338
jl_compile_method_internal at /buildworker/worker/package_linux64/build/src/gf.c:1980
jl_compile_method_internal at /buildworker/worker/package_linux64/build/src/gf.c:2246 [inlined]
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2239 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
display_error at ./client.jl:107
unknown function (ip: 0x7f03e5c0550d)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2247 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
jl_apply at /buildworker/worker/package_linux64/build/src/julia.h:1788 [inlined]
jl_f__call_latest at /buildworker/worker/package_linux64/build/src/builtins.c:757
#invokelatest#2 at ./essentials.jl:716 [inlined]
invokelatest at ./essentials.jl:714 [inlined]
exec_options at ./client.jl:294
_start at ./client.jl:495
jfptr__start_38732.clone_1 at /mnt/Data/git/Enzyme.jl/julia-1.7.2/lib/julia/sys.so (unknown line)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2247 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2429
jl_apply at /buildworker/worker/package_linux64/build/src/julia.h:1788 [inlined]
true_main at /buildworker/worker/package_linux64/build/src/jlapi.c:559
jl_repl_entrypoint at /buildworker/worker/package_linux64/build/src/jlapi.c:701
main at /buildworker/worker/package_linux64/build/cli/loader_exe.c:42
__libc_start_main at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
_start at ./julia-1.7.2/bin/julia (unknown line)
Allocations: 69053306 (Pool: 69024596; Big: 28710); GC: 77
I can't reproduce this locally on Enzyme 0.10.11
. Please give it a go and see if the issue is solved for you now. If it isn't please reopen this issue.