Constructors on GPU?

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#309 mở ngày 22/1/2025 3 bình luận 0 reaction 0 người được giao Xem trên GitHub

Maintainer thường phản hồi trong vòng 1 ngày

Chưa có ai nhận issue này.

Đánh giá

Độ khó: 4/5
Thời gian dự kiến: 3-5 ngày
Mức phù hợp với người mới: 35/100

Loại issue: Lỗi
Độ rõ ràng: Cần làm rõ
Mức độ hoạt động: Đình trệ
Công nghệ: julia
Lĩnh vực: hpc

Hướng nghiên cứu

Tái hiện lỗi với T.(x_gpu), sau đó kiểm tra FixedPointNumbers.jl:58 và fixed.jl:81, nơi quá trình chuyển đổi và xử lý lỗi xuất hiện trong stack trace được báo cáo. Được coi là hoàn tất khi quá trình chuyển đổi bằng broadcast trên GPU thành công mà không tạo ra các lệnh gọi string hoặc hàm bên ngoài không được hỗ trợ.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.

Mô tả

doc wontfix

I'm implementing an algorithm on GPU where Float32 isn't accurate enough but Float64 incurs a 64x runtime penalty I'd like to avoid. The Fixed type is appealing because I can get the accuracy I need with a 32-bit type, and I have good prior knowledge of the dynamic range. I thought I'd give it a try but immediately ran into problems. For example,

using CUDA
using FixedPointNumbers

x_cpu = Float32[1, 2 ,3]
x_gpu = cu(x_cpu)

T = Q24f7
T.(x_cpu)  # no problem
T.(x_gpu)  # fails

log output

warning: linking module flags 'Dwarf Version': IDs have conflicting values ('i32 4' from globals with 'i32 2' from start)
ERROR: LoadError: InvalidIRError: compiling MethodInstance for (::GPUArrays.var"#34#36")(::CUDA.CuKernelContext, ::CuDeviceVector{Q24f7, 1}, ::Base.Broadcast.Broadcasted{CUDA.CuArrayStyle{1, CUDA.DeviceMemory}, Tuple{Base.OneTo{Int64}}, CUDA.var"#1155#1156"{Q24f7}, Tuple{Base.Broadcast.Extruded{CuDeviceVector{Float32, 1}, Tuple{Bool}, Tuple{Int64}}}}, ::Int64) resulted in invalid LLVM IR
Reason: unsupported call to an external C function (call to jl_string_to_genericmemory)
Reason: unsupported call to an external C function (call to jl_genericmemory_to_string)
Reason: unsupported call to an external C function (call to ijl_pchar_to_string)
Reason: unsupported dynamic function invocation (call to !=)
Stacktrace:
 [1] show
   @ ./ryu/Ryu.jl:115
 [2] multiple call sites
   @ unknown:0
Reason: unsupported dynamic function invocation (call to writeshortest)
Stacktrace:
 [1] show
   @ ./ryu/Ryu.jl:116
 [2] multiple call sites
   @ unknown:0
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
 [1] _string_n
   @ ./strings/string.jl:109
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] show
   @ ./ryu/Ryu.jl:114
 [5] multiple call sites
   @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
 [1] unsafe_wrap
   @ ./strings/string.jl:119
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] show
   @ ./ryu/Ryu.jl:114
 [5] multiple call sites
   @ unknown:0
Reason: unsupported dynamic function invocation (call to nonnothingtype)
Stacktrace:
 [1] nonnothing_nonmissing_typeinfo
   @ ./show.jl:1244
 [2] show
   @ ./ryu/Ryu.jl:115
 [3] multiple call sites
   @ unknown:0
Reason: unsupported dynamic function invocation (call to nonmissingtype)
Stacktrace:
 [1] nonnothing_nonmissing_typeinfo
   @ ./show.jl:1244
 [2] show
   @ ./ryu/Ryu.jl:115
 [3] multiple call sites
   @ unknown:0
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
 [1] _string_n
   @ ./strings/string.jl:109
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] take!
   @ ./iobuffer.jl:467
 [5] multiple call sites
   @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
 [1] unsafe_wrap
   @ ./strings/string.jl:119
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] take!
   @ ./iobuffer.jl:467
 [5] multiple call sites
   @ unknown:0
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
 [1] _string_n
   @ ./strings/string.jl:109
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] take!
   @ ./iobuffer.jl:471
 [5] multiple call sites
   @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
 [1] unsafe_wrap
   @ ./strings/string.jl:119
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] take!
   @ ./iobuffer.jl:471
 [5] multiple call sites
   @ unknown:0
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
 [1] _string_n
   @ ./strings/string.jl:109
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] take!
   @ ./iobuffer.jl:476
 [5] multiple call sites
   @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
 [1] unsafe_wrap
   @ ./strings/string.jl:119
 [2] StringMemory
   @ ./iobuffer.jl:44
 [3] StringVector
   @ ./iobuffer.jl:45
 [4] take!
   @ ./iobuffer.jl:476
 [5] multiple call sites
   @ unknown:0
Reason: unsupported dynamic function invocation (call to print_to_string(xs...) @ Base strings/io.jl:137)
Stacktrace:
 [1] string
   @ ./strings/io.jl:189
 [2] throw_converterror
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:322
 [3] _convert
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
 [4] FixedPoint
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
 [5] #1155
   @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
 [6] _broadcast_getindex_evalf
   @ ./broadcast.jl:673
 [7] _broadcast_getindex
   @ ./broadcast.jl:646
 [8] getindex
   @ ./broadcast.jl:605
 [9] #34
   @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to a lazy-initialized function (call to jl_genericmemory_to_string)
Stacktrace:
 [1] String
   @ ./strings/string.jl:78
 [2] throw_converterror
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:324
 [3] _convert
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
 [4] FixedPoint
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
 [5] #1155
   @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
 [6] _broadcast_getindex_evalf
   @ ./broadcast.jl:673
 [7] _broadcast_getindex
   @ ./broadcast.jl:646
 [8] getindex
   @ ./broadcast.jl:605
 [9] #34
   @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to a lazy-initialized function (call to ijl_pchar_to_string)
Stacktrace:
 [1] String
   @ ./strings/string.jl:80
 [2] throw_converterror
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:324
 [3] _convert
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
 [4] FixedPoint
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
 [5] #1155
   @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
 [6] _broadcast_getindex_evalf
   @ ./broadcast.jl:673
 [7] _broadcast_getindex
   @ ./broadcast.jl:646
 [8] getindex
   @ ./broadcast.jl:605
 [9] #34
   @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to a lazy-initialized function (call to jl_genericmemory_to_string)
Stacktrace:
 [1] String
   @ ./strings/string.jl:78
 [2] throw_converterror
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:325
 [3] _convert
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
 [4] FixedPoint
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
 [5] #1155
   @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
 [6] _broadcast_getindex_evalf
   @ ./broadcast.jl:673
 [7] _broadcast_getindex
   @ ./broadcast.jl:646
 [8] getindex
   @ ./broadcast.jl:605
 [9] #34
   @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to a lazy-initialized function (call to ijl_pchar_to_string)
Stacktrace:
 [1] String
   @ ./strings/string.jl:80
 [2] throw_converterror
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:325
 [3] _convert
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
 [4] FixedPoint
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
 [5] #1155
   @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
 [6] _broadcast_getindex_evalf
   @ ./broadcast.jl:673
 [7] _broadcast_getindex
   @ ./broadcast.jl:646
 [8] getindex
   @ ./broadcast.jl:605
 [9] #34
   @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported dynamic function invocation (call to print_to_string(xs...) @ Base strings/io.jl:137)
Stacktrace:
 [1] string
   @ ./strings/io.jl:189
 [2] throw_converterror
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:326
 [3] _convert
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
 [4] FixedPoint
   @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
 [5] #1155
   @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
 [6] _broadcast_getindex_evalf
   @ ./broadcast.jl:673
 [7] _broadcast_getindex
   @ ./broadcast.jl:646
 [8] getindex
   @ ./broadcast.jl:605
 [9] #34
   @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
  [1] _string_n
    @ ./strings/string.jl:109
  [2] StringMemory
    @ ./iobuffer.jl:44
  [3] #IOBuffer#519
    @ ./iobuffer.jl:128
  [4] GenericIOBuffer
    @ ./iobuffer.jl:119
  [5] throw_converterror
    @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:323
  [6] _convert
    @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
  [7] FixedPoint
    @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
  [8] #1155
    @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
  [9] _broadcast_getindex_evalf
    @ ./broadcast.jl:673
 [10] _broadcast_getindex
    @ ./broadcast.jl:646
 [11] getindex
    @ ./broadcast.jl:605
 [12] #34
    @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
  [1] unsafe_wrap
    @ ./strings/string.jl:119
  [2] StringMemory
    @ ./iobuffer.jl:44
  [3] #IOBuffer#519
    @ ./iobuffer.jl:128
  [4] GenericIOBuffer
    @ ./iobuffer.jl:119
  [5] throw_converterror
    @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:323
  [6] _convert
    @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/fixed.jl:81
  [7] FixedPoint
    @ ~/.julia/packages/FixedPointNumbers/Dn4hv/src/FixedPointNumbers.jl:58
  [8] #1155
    @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:186
  [9] _broadcast_getindex_evalf
    @ ./broadcast.jl:673
 [10] _broadcast_getindex
    @ ./broadcast.jl:646
 [11] getindex
    @ ./broadcast.jl:605
 [12] #34
    @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:59
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
  [1] _string_n
    @ ./strings/string.jl:109
  [2] StringMemory
    @ ./iobuffer.jl:44
  [3] _similar_data
    @ ./iobuffer.jl:156
  [4] _resize!
    @ ./iobuffer.jl:317
  [5] ensureroom
    @ ./iobuffer.jl:401
  [6] unsafe_write
    @ ./iobuffer.jl:522
  [7] unsafe_write
    @ ./io.jl:452
  [8] unsafe_write
    @ ./io.jl:803
  [9] write
    @ ./io.jl:837
 [10] show
    @ ./ryu/Ryu.jl:118
 [11] multiple call sites
    @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
  [1] unsafe_wrap
    @ ./strings/string.jl:119
  [2] StringMemory
    @ ./iobuffer.jl:44
  [3] _similar_data
    @ ./iobuffer.jl:156
  [4] _resize!
    @ ./iobuffer.jl:317
  [5] ensureroom
    @ ./iobuffer.jl:401
  [6] unsafe_write
    @ ./iobuffer.jl:522
  [7] unsafe_write
    @ ./io.jl:452
  [8] unsafe_write
    @ ./io.jl:803
  [9] write
    @ ./io.jl:837
 [10] show
    @ ./ryu/Ryu.jl:118
 [11] multiple call sites
    @ unknown:0
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
  [1] _string_n
    @ ./strings/string.jl:109
  [2] StringMemory
    @ ./iobuffer.jl:44
  [3] _similar_data
    @ ./iobuffer.jl:156
  [4] ensureroom_slowpath
    @ ./iobuffer.jl:371
  [5] ensureroom
    @ ./iobuffer.jl:396
  [6] unsafe_write
    @ ./iobuffer.jl:522
  [7] unsafe_write
    @ ./io.jl:452
  [8] unsafe_write
    @ ./io.jl:803
  [9] write
    @ ./io.jl:837
 [10] show
    @ ./ryu/Ryu.jl:118
 [11] multiple call sites
    @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
  [1] unsafe_wrap
    @ ./strings/string.jl:119
  [2] StringMemory
    @ ./iobuffer.jl:44
  [3] _similar_data
    @ ./iobuffer.jl:156
  [4] ensureroom_slowpath
    @ ./iobuffer.jl:371
  [5] ensureroom
    @ ./iobuffer.jl:396
  [6] unsafe_write
    @ ./iobuffer.jl:522
  [7] unsafe_write
    @ ./io.jl:452
  [8] unsafe_write
    @ ./io.jl:803
  [9] write
    @ ./io.jl:837
 [10] show
    @ ./ryu/Ryu.jl:118
 [11] multiple call sites
    @ unknown:0
Reason: unsupported call to an unknown function (call to jl_alloc_genericmemory)
Stacktrace:
 [1] GenericMemory
   @ ./boot.jl:516
 [2] array_new_memory
   @ ./Base.jl:335
 [3] #133
   @ ./array.jl:1129
 [4] _growend!
   @ ./array.jl:1116
 [5] resize!
   @ ./array.jl:1450
 [6] show
   @ ./ryu/Ryu.jl:118
 [7] multiple call sites
   @ unknown:0
Reason: unsupported call to an external C function (call to ijl_alloc_string)
Stacktrace:
 [1] _string_n
   @ ./strings/string.jl:109
 [2] array_new_memory
   @ ./Base.jl:331
 [3] #133
   @ ./array.jl:1129
 [4] _growend!
   @ ./array.jl:1116
 [5] resize!
   @ ./array.jl:1450
 [6] show
   @ ./ryu/Ryu.jl:118
 [7] multiple call sites
   @ unknown:0
Reason: unsupported call to a lazy-initialized function (call to jl_string_to_genericmemory)
Stacktrace:
 [1] array_new_memory
   @ ./Base.jl:332
 [2] #133
   @ ./array.jl:1129
 [3] _growend!
   @ ./array.jl:1116
 [4] resize!
   @ ./array.jl:1450
 [5] show
   @ ./ryu/Ryu.jl:118
 [6] multiple call sites
   @ unknown:0
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.PTXCompilerTarget, CUDA.CUDACompilerParams}, args::LLVM.Module)
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/validation.jl:147
  [2] macro expansion
    @ ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:382 [inlined]
  [3] macro expansion
    @ ~/.julia/packages/TimerOutputs/6KVfH/src/TimerOutput.jl:253 [inlined]
  [4] macro expansion
    @ ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:381 [inlined]
  [5] emit_llvm(job::GPUCompiler.CompilerJob; toplevel::Bool, libraries::Bool, optimize::Bool, cleanup::Bool, validate::Bool, only_entry::Bool)
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/utils.jl:108
  [6] emit_llvm
    @ ~/.julia/packages/GPUCompiler/2CW9L/src/utils.jl:106 [inlined]
  [7] codegen(output::Symbol, job::GPUCompiler.CompilerJob; toplevel::Bool, libraries::Bool, optimize::Bool, cleanup::Bool, validate::Bool, strip::Bool, only_entry::Bool, parent_job::Nothing)
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:100
  [8] codegen
    @ ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:82 [inlined]
  [9] compile(target::Symbol, job::GPUCompiler.CompilerJob; kwargs::@Kwargs{})
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:79
 [10] compile
    @ ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:74 [inlined]
 [11] #1145
    @ ~/.julia/packages/CUDA/2kjXI/src/compiler/compilation.jl:250 [inlined]
 [12] JuliaContext(f::CUDA.var"#1145#1148"{GPUCompiler.CompilerJob{GPUCompiler.PTXCompilerTarget, CUDA.CUDACompilerParams}}; kwargs::@Kwargs{})
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:34
 [13] JuliaContext(f::Function)
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/driver.jl:25
 [14] compile(job::GPUCompiler.CompilerJob)
    @ CUDA ~/.julia/packages/CUDA/2kjXI/src/compiler/compilation.jl:249
 [15] actual_compilation(cache::Dict{Any, CuFunction}, src::Core.MethodInstance, world::UInt64, cfg::GPUCompiler.CompilerConfig{GPUCompiler.PTXCompilerTarget, CUDA.CUDACompilerParams}, compiler::typeof(CUDA.compile), linker::typeof(CUDA.link))
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/execution.jl:237
 [16] cached_compilation(cache::Dict{Any, CuFunction}, src::Core.MethodInstance, cfg::GPUCompiler.CompilerConfig{GPUCompiler.PTXCompilerTarget, CUDA.CUDACompilerParams}, compiler::Function, linker::Function)
    @ GPUCompiler ~/.julia/packages/GPUCompiler/2CW9L/src/execution.jl:151
 [17] macro expansion
    @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:380 [inlined]
 [18] macro expansion
    @ ./lock.jl:273 [inlined]
 [19] cufunction(f::GPUArrays.var"#34#36", tt::Type{Tuple{CUDA.CuKernelContext, CuDeviceVector{Q24f7, 1}, Base.Broadcast.Broadcasted{CUDA.CuArrayStyle{1, CUDA.DeviceMemory}, Tuple{Base.OneTo{Int64}}, CUDA.var"#1155#1156"{Q24f7}, Tuple{Base.Broadcast.Extruded{CuDeviceVector{Float32, 1}, Tuple{Bool}, Tuple{Int64}}}}, Int64}}; kwargs::@Kwargs{})
    @ CUDA ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:375
 [20] cufunction
    @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:372 [inlined]
 [21] macro expansion
    @ ~/.julia/packages/CUDA/2kjXI/src/compiler/execution.jl:112 [inlined]
 [22] #launch_heuristic#1200
    @ ~/.julia/packages/CUDA/2kjXI/src/gpuarrays.jl:17 [inlined]
 [23] launch_heuristic
    @ ~/.julia/packages/CUDA/2kjXI/src/gpuarrays.jl:15 [inlined]
 [24] _copyto!
    @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:78 [inlined]
 [25] copyto!
    @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:44 [inlined]
 [26] copy
    @ ~/.julia/packages/GPUArrays/qt4ax/src/host/broadcast.jl:29 [inlined]
 [27] materialize(bc::Base.Broadcast.Broadcasted{CUDA.CuArrayStyle{1, CUDA.DeviceMemory}, Nothing, Type{Q24f7}, Tuple{CuArray{Float32, 1, CUDA.DeviceMemory}}})
    @ Base.Broadcast ./broadcast.jl:867
 [28] top-level scope
    @ /data/ALOS/rosamond/julia_backproject/fp_gpu.jl:9
in expression starting at /data/ALOS/rosamond/julia_backproject/fp_gpu.jl:9

I've had trouble with the converting constructors for float Fixed{T,f}(v::Float64) and fixed-point Fixed{T,f}(v::Fixed{T2,f2}) types on GPU. The ctor with the dummy parameter Fixed{T,f}(v::Integer, _) seems to work fine but is pretty low-level. Personally I'm okay doing the float conversion on CPU and copying to GPU, but the fixed-to-fixed conversions need to happen on the device throughout my algorithm.

I'm pretty new to both this package and CUDA.jl so I don't have a good sense of how to proceed or how much work would be involved.

Ngôn ngữ chính: Julia
Star: 95
Fork: 38
Merge trung bình: 16 giờ 31 phút
Pull request đã merge (30 ngày): 9

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Issue khác của JuliaMath/FixedPointNumbers.jl

Inadequate support of `promote_rule` for non-concrete types
Đang mở
- Có gì không ổn?
bug

Độ khó 5/5 Hơn một tuần Mức phù hợp với người mới 35/100

JuliaMath/FixedPointNumbers.jl#343 · 1 bình luận · Mở ngày 29/9/2026

Maintainer thường phản hồi trong vòng 1 ngày
Fallback of `floattype()` for non-concrete types
Đang mở
- Có gì không ổn?
bug

Độ khó 3/5 1-2 ngày Mức phù hợp với người mới 62/100

JuliaMath/FixedPointNumbers.jl#342 · Mở ngày 29/9/2026

Maintainer thường phản hồi trong vòng 1 ngày
Improving or Removing Invalidations.yml
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- Có gì không ổn?
Độ khó 4/5 3-5 ngày Mức phù hợp với người mới 35/100

JuliaMath/FixedPointNumbers.jl#337 · 1 bình luận · Mở ngày 22/9/2026

Maintainer thường phản hồi trong vòng 1 ngày
Loading FixedPointNumbers invalidates ~7,700 precompiled method instances (7x slower first mtkcompile)
Đang mở
- Có gì không ổn?
Độ khó 5/5 Hơn một tuần Mức phù hợp với người mới 42/100

JuliaMath/FixedPointNumbers.jl#331 · 7 bình luận · Mở ngày 6/9/2026

Maintainer thường phản hồi trong vòng 1 ngày
`Fixed` does not fully support `fraction bits >= storage bits - 1`
Đang mở
- Có gì không ổn?
needs comments

Độ khó 3/5 1-2 ngày Mức phù hợp với người mới 68/100

JuliaMath/FixedPointNumbers.jl#318 · 1 bình luận · Mở ngày 24/1/2026

Maintainer thường phản hồi trong vòng 1 ngày

Tất cả issue của JuliaMath/FixedPointNumbers.jl

Issue tương tự

[RFC] Documentation on avoiding direct dependencies on `FixedPointNumbers.jl` for certain downstream packages, and the necessity of `RGB48`
Đang mở
- Có gì không ổn?
add-on doc enhancement

Độ khó 2/5 1-3 giờ Mức phù hợp với người mới 72/100

JuliaGraphics/ColorTypes.jl#344 · 1 bình luận · Mở ngày 30/9/2026

Maintainer thường phản hồi trong vòng 1 ngày
R dockerfile no longer builds
Đang mở
- Có gì không ổn?
R

Độ khó 1/5 Dưới một giờ Mức phù hợp với người mới 88/100

eWaterCycle/remotebmi#58 · Mở ngày 30/9/2026
Test include_R with superparametric elements
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- Có gì không ổn?
Độ khó 2/5 1-3 giờ Mức phù hợp với người mới 78/100

Ferrite-FEM/FerriteInterfaceElements.jl#52 · Mở ngày 30/9/2026
`enzymexla.linalg.lu` lowering fails for a tall matrix: the permutation is built with the pivot type
Đang mở
- Có gì không ổn?
Độ khó 2/5 1-3 giờ Mức phù hợp với người mới 78/100

EnzymeAD/Enzyme-JAX#3286 · Mở ngày 30/9/2026

Maintainer thường phản hồi trong vòng 1 ngày
`SimpleLUFactorization` returns the initial `u` as the values of dual-number solutions
Đang mở
- Có gì không ổn?
Độ khó 2/5 1-3 giờ Mức phù hợp với người mới 90/100

SciML/LinearSolve.jl#1359 · 1 bình luận · Mở ngày 29/9/2026

Maintainer thường phản hồi trong vòng 1 ngày

Thêm issue về Julia

Constructors on GPU?

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Issue khác của JuliaMath/FixedPointNumbers.jl

Có gì không ổn?

Có gì không ổn?

Có gì không ổn?

Có gì không ổn?

Có gì không ổn?

Issue tương tự

Có gì không ổn?

Có gì không ổn?

Có gì không ổn?

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