Comments (6)
maleadt
commented on May 25, 2024
Yeah, this is currently expected, due to Metal.jl not supporting exceptions yet. You can work around this by doing a non-throwing conversion, e.g. trunc(Int, x) or x % Int.
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nicolamos
commented on May 25, 2024
Thank you for the suggestion!
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nicolamos
commented on May 25, 2024
Sorry, but I'm getting the same error.
x % Intis not defined whenx <: AbstractFloat;trunc(Int, x)does throw as well;unsafe_trunc(Int, x)can not be ported to the GPU, I guess;MT.trunc_fastdoes not accept an output type argument.
The error is the following:
ERROR: InvalidIRError: compiling kernel #55#56(Metal.MtlDeviceVector{Float32, 1}) resulted in invalid LLVM IR
Reason: unsupported call to an unknown function (call to gpu_malloc)
Stacktrace:
[1] malloc
@ ~/.julia/packages/GPUCompiler/hi5Wg/src/runtime.jl:89
[2] macro expansion
@ ~/.julia/packages/GPUCompiler/hi5Wg/src/runtime.jl:184
[3] macro expansion
@ ./none:0
[4] box
@ ./none:0
[5] box_float32
@ ~/.julia/packages/GPUCompiler/hi5Wg/src/runtime.jl:213
[6] Int64
@ ./float.jl:788
[7] convert
@ ./number.jl:7
[8] #55
@ ./REPL[32]:1
Hint: catch this exception as `err` and call `code_typed(err; interactive = true)` to introspect the erronous code with Cthulhu.jl
Stacktrace:
[1] check_ir(job::GPUCompiler.CompilerJob{GPUCompiler.MetalCompilerTarget, Metal.MetalCompilerParams, GPUCompiler.FunctionSpec{var"#55#56", Tuple{Metal.MtlDeviceVector{Float32, 1}}}}, args::LLVM.Module)
@ GPUCompiler ~/.julia/packages/GPUCompiler/hi5Wg/src/validation.jl:141
[2] macro expansion
@ ~/.julia/packages/GPUCompiler/hi5Wg/src/driver.jl:418 [inlined]
[3] macro expansion
@ ~/.julia/packages/TimerOutputs/LHjFw/src/TimerOutput.jl:253 [inlined]
[4] macro expansion
@ ~/.julia/packages/GPUCompiler/hi5Wg/src/driver.jl:416 [inlined]
[5] emit_asm(job::GPUCompiler.CompilerJob, ir::LLVM.Module; strip::Bool, validate::Bool, format::LLVM.API.LLVMCodeGenFileType)
@ GPUCompiler ~/.julia/packages/GPUCompiler/hi5Wg/src/utils.jl:68
[6] mtlfunction_compile(job::GPUCompiler.CompilerJob, ctx::LLVM.Context)
@ Metal ~/.julia/packages/Metal/pfCxO/src/compiler/execution.jl:168
[7] #32
@ ~/.julia/packages/Metal/pfCxO/src/compiler/execution.jl:161 [inlined]
[8] JuliaContext(f::Metal.var"#32#33"{GPUCompiler.CompilerJob{GPUCompiler.MetalCompilerTarget, Metal.MetalCompilerParams, GPUCompiler.FunctionSpec{var"#55#56", Tuple{Metal.MtlDeviceVector{Float32, 1}}}}})
@ GPUCompiler ~/.julia/packages/GPUCompiler/hi5Wg/src/driver.jl:76
[9] mtlfunction_compile(job::GPUCompiler.CompilerJob)
@ Metal ~/.julia/packages/Metal/pfCxO/src/compiler/execution.jl:160
[10] cached_compilation(cache::Dict{UInt64, Any}, job::GPUCompiler.CompilerJob, compiler::typeof(Metal.mtlfunction_compile), linker::typeof(Metal.mtlfunction_link))
@ GPUCompiler ~/.julia/packages/GPUCompiler/hi5Wg/src/cache.jl:90
[11] mtlfunction(f::var"#55#56", tt::Type{Tuple{Metal.MtlDeviceVector{Float32, 1}}}; name::Nothing, kwargs::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
@ Metal ~/.julia/packages/Metal/pfCxO/src/compiler/execution.jl:148
[12] mtlfunction(f::var"#55#56", tt::Type{Tuple{Metal.MtlDeviceVector{Float32, 1}}})
@ Metal ~/.julia/packages/Metal/pfCxO/src/compiler/execution.jl:141
[13] macro expansion
@ ~/.julia/packages/Metal/pfCxO/src/compiler/execution.jl:64 [inlined]
[14] top-level scope
@ ~/.julia/packages/GPUCompiler/hi5Wg/src/reflection.jl:201
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maleadt
commented on May 25, 2024
unsafe_trunc(Int, x)can not be ported to the GPU, I guess;
Sorry, that's the one I meant, not plain trunc. Why does that not work for you on the GPU? k = unsafe_trunc(Int, x) does the job here.
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nicolamos
commented on May 25, 2024
Yes sorry, it works. I don’t know what was the issue… maybe I forgot the Int argument somewhere.
I also have another issue. I don’t really understand how can I use a function from another package. If I define the function in the same module (Main in this case), it works; but if import it from another package Metal complains that it is not defined.
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maleadt
commented on May 25, 2024
I also have another issue. I don’t really understand how can I use a function from another package. If I define the function in the same module (Main in this case), it works; but if
importit from another package Metal complains that it is not defined.
That obviously should work fine. The bug tracker is not really suited for such queries though, but you can open a thread on Discourse with some actual code to demonstrate the issue.
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