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add support for Bumper.ResizeBuffer #275

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Merged
lkdvos merged 1 commit into from
Jun 10, 2026
Merged

add support for Bumper.ResizeBuffer #275

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6 changes: 5 additions & 1 deletion ext/TensorOperationsBumperExt.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,11 @@ module TensorOperationsBumperExt
using TensorOperations
using Bumper

const BumperBuffer = Union{SlabBuffer, AllocBuffer}
const BumperBuffer = @static if isdefined(Bumper, :ResizeBuffer)
Union{SlabBuffer, AllocBuffer, Bumper.ResizeBuffer}
else
Union{SlabBuffer, AllocBuffer}
end

function TensorOperations.tensoralloc(
::Type{A}, structure, ::Val{istemp}, buf::BumperBuffer
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15 changes: 15 additions & 0 deletions test/butensor.jl
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Expand Up @@ -78,4 +78,19 @@ using Bumper
@test E5 isa T
@test HRAA5 ≈ HRAA1
@test E5 ≈ E1

# resizebuffer (Bumper >= 0.7.2)
@static if isdefined(Bumper, :ResizeBuffer)
resizebuf = Bumper.ResizeBuffer()
@no_escape resizebuf @tensor allocator = resizebuf begin
HRAA6[a, s1, s2, c] := ρₗ[a, a'] * A1[a', t1, b] * A2[b, t2, c'] * ρᵣ[c', c] *
H[s1, s2, t1, t2]
E6 = ρₗ[a', a] * A1[a, s, b] * A2[b, s', c] * ρᵣ[c, c'] * H[t, t', s, s'] *
conj(A1[a', t, b']) * conj(A2[b', t', c'])
end
@test HRAA6 isa Array{T, 4}
@test E6 isa T
@test HRAA6 ≈ HRAA1
@test E6 ≈ E1
end
end
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