Merge pull request #241 from CliMA/ck/rm_cuda_dep

Remove direct CUDA dependency

Author: charleskawczynski

Project.toml

@@ -4,7 +4,6 @@ authors = ["Climate Modeling Alliance"]
 version = "0.7.15"
 
 [deps]
-CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 ClimaComms = "3a4d1b5c-c61d-41fd-a00a-5873ba7a1b0d"
 Colors = "5ae59095-9a9b-59fe-a467-6f913c188581"
 DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
@@ -19,7 +18,6 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 
 [compat]
-CUDA = "3, 4, 5"
 ClimaComms = "0.4, 0.5"
 Colors = "0.12"
 DataStructures = "0.18"

perf/Manifest.toml

@@ -2,7 +2,7 @@
 
 julia_version = "1.9.3"
 manifest_format = "2.0"
-project_hash = "0993a67de8f6f7ee789e0a0747a61a451485840b"
+project_hash = "d917eab60935304f7739c0cfa846ca1eefc6e754"
 
 [[deps.ADTypes]]
 git-tree-sha1 = "5d2e21d7b0d8c22f67483ef95ebdc39c0e6b6003"

perf/Project.toml

@@ -1,7 +1,6 @@
 [deps]
 ArgParse = "c7e460c6-2fb9-53a9-8c5b-16f535851c63"
 BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
-CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 ClimaComms = "3a4d1b5c-c61d-41fd-a00a-5873ba7a1b0d"
 ClimaCore = "d414da3d-4745-48bb-8d80-42e94e092884"
 ClimaTimeSteppers = "595c0a79-7f3d-439a-bc5a-b232dc3bde79"
@@ -28,7 +27,6 @@ URIs = "5c2747f8-b7ea-4ff2-ba2e-563bfd36b1d4"
 [compat]
 ArgParse = "1"
 BenchmarkTools = "1"
-CUDA = "3, 4, 5"
 ClimaCore = "0.10"
 ClimaTimeSteppers = "0.7"
 DataStructures = "0.18"

src/ClimaTimeSteppers.jl

@@ -48,15 +48,14 @@ using KernelAbstractions
 using LinearAlgebra
 using LinearOperators
 using StaticArrays
-using CUDA
 import ClimaComms
 using Colors
 using NVTX
 
 export AbstractAlgorithmName, AbstractAlgorithmConstraint, Unconstrained, SSP
 
 array_device(::Union{Array, SArray, MArray}) = CPU()
-array_device(::CuArray) = CUDADevice()
+array_device(x) = CUDADevice() # assume CUDA
 
 import DiffEqBase, SciMLBase, LinearAlgebra, DiffEqCallbacks, Krylov