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Add functionality to precompile the runtime library. #465

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Oct 5, 2020
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Add functionality to precompile the runtime library. #465

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13 changes: 9 additions & 4 deletions src/device/runtime.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -7,12 +7,17 @@
GPUCompiler.reset_runtime()

# load or build the runtime for the most likely compilation job given a compute capability
function load_runtime(cap::VersionNumber)
target = PTXCompilerTarget(; cap=cap)
function precompile_runtime(caps=llvm_cap_support(LLVM.version()))
dummy_source = FunctionSpec(()->return, Tuple{})
params = CUDACompilerParams()
job = CompilerJob(target, dummy_source, params)
GPUCompiler.load_runtime(job)
JuliaContext() do ctx
for cap in caps
target = PTXCompilerTarget(; cap=cap)
job = CompilerJob(target, dummy_source, params)
GPUCompiler.load_runtime(job, ctx)
end
end
return
end

@inline exception_flag() = ccall("extern julia_exception_flag", llvmcall, Ptr{Cvoid}, ())
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3 changes: 3 additions & 0 deletions test/setup.jl
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Expand Up @@ -13,6 +13,9 @@ using Random
# detect cuda-memcheck
const memcheck = haskey(ENV, "CUDA_MEMCHECK")

# precompile the runtime library
CUDA.precompile_runtime()


## entry point

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