Update

.github/dependabot.yml

@@ -4,4 +4,12 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/" # Location of package manifests
     schedule:
-      interval: "weekly"
+      interval: "weekly"
+  - package-ecosystem: "julia"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups: # uncomment to group all julia package updates into a single PR
+      all-julia-packages:
+        patterns:
+          - "*"

.github/workflows/Tests.yml

@@ -1,10 +1,9 @@
-name: Tests
+name: CI
+
 on:
   push:
     branches:
-      - 'master'
       - 'main'
-      - 'release-'
     tags: '*'
     paths-ignore:
       - 'docs/**'
@@ -14,53 +13,14 @@ on:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
-  # Cancel intermediate builds: only if it is a pull request build.
   cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 
 jobs:
-  setup-matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.mk.outputs.matrix }}
-    steps:
-      - id: mk
-        shell: bash
-        run: |
-          # Draft PR: only run ubuntu-latest + version=1 (all groups)
-          if [[ "${{ github.event_name }}" == "pull_request" && "${{ github.event.pull_request.draft }}" == "true" ]]; then
-            cat >> "$GITHUB_OUTPUT" <<'EOF'
-          matrix={"version":["1"],"os":["ubuntu-latest"],"group":["states","operators","algorithms","multifusion","misc"]}
-          EOF
-          else
-            cat >> "$GITHUB_OUTPUT" <<'EOF'
-          matrix={"version":["lts","1"],"os":["ubuntu-latest","windows-latest","macOS-latest"],"group":["states","operators","algorithms","multifusion","misc"]}
-          EOF
-          fi
-
   tests:
     name: "Tests"
-    needs: setup-matrix
-    strategy:
-      fail-fast: false
-      matrix: ${{ fromJSON(needs.setup-matrix.outputs.matrix) }}
-
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: ${{ matrix.version }}
-      - uses: julia-actions/cache@v3
-      - uses: julia-actions/julia-buildpkg@v1
-      - uses: julia-actions/julia-runtest@v1
-        timeout-minutes: 120
-        with:
-          test_args: '--jobs=1 ${{ matrix.group }}'
-      - uses: julia-actions/julia-processcoverage@v1
-        with:
-          directories: 'src,ext'
-      - uses: codecov/codecov-action@v6
-        with:
-          files: lcov.info
-          token: "${{ secrets.CODECOV_TOKEN }}"
-          fail_ci_if_error: true
+    uses: "QuantumKitHub/QuantumKitHubActions/.github/workflows/TestGroups.yml@main"
+    with:
+      fast: "${{ github.event.pull_request.draft == true }}"
+      timeout-minutes: 120
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

CITATION.cff

@@ -12,7 +12,7 @@ authors:
   orcid: "https://orcid.org/0000-0002-0858-291X"
 
 title: "MPSKit"
-version: 0.13.10
+version: 0.13.11
 doi: 10.5281/zenodo.10654900
-date-released: 2026-02-26
+date-released: 2026-05-04
 url: "https://github.com/QuantumKitHub/MPSKit.jl"

Project.toml

@@ -1,8 +1,11 @@
 name = "MPSKit"
 uuid = "bb1c41ca-d63c-52ed-829e-0820dda26502"
-version = "0.13.10"
+version = "0.13.12"
 authors = "Lukas Devos, Maarten Van Damme and contributors"
 
+[workspace]
+projects = ["test", "docs"]
+
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
 BlockTensorKit = "5f87ffc2-9cf1-4a46-8172-465d160bd8cd"
@@ -21,6 +24,7 @@ RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
 TensorKit = "07d1fe3e-3e46-537d-9eac-e9e13d0d4cec"
 TensorKitManifolds = "11fa318c-39cb-4a83-b1ed-cdc7ba1e3684"
 TensorOperations = "6aa20fa7-93e2-5fca-9bc0-fbd0db3c71a2"
+TimerOutputs = "a759f4b9-e2f1-59dc-863e-4aeb61b1ea8f"
 VectorInterface = "409d34a3-91d5-4945-b6ec-7529ddf182d8"
 
 [weakdeps]
@@ -32,47 +36,22 @@ MPSKitAdaptExt = "Adapt"
 [compat]
 Accessors = "0.1"
 Adapt = "4"
-Aqua = "0.8.9"
-BlockTensorKit = "0.3.8"
-CUDA = "5.9"
-Combinatorics = "1"
+BlockTensorKit = "0.3.11"
 Compat = "3.47, 4.10"
 DocStringExtensions = "0.9.3"
 HalfIntegers = "1.6.0"
 KrylovKit = "0.8.3, 0.9.2, 0.10"
 LinearAlgebra = "1.6"
 LoggingExtras = "~1.0"
-MatrixAlgebraKit = "0.6"
+MatrixAlgebraKit = "0.6.5"
 OhMyThreads = "0.7, 0.8"
 OptimKit = "0.3.1, 0.4"
-ParallelTestRunner = "2"
-Pkg = "1"
-Plots = "1.40"
 Printf = "1"
 Random = "1"
 RecipesBase = "1.1"
-TensorKit = "0.16.3"
-TensorKitManifolds = "0.7"
-TensorKitTensors = "0.2"
+TensorKit = "0.16.5"
+TensorKitManifolds = "0.7, 0.8"
 TensorOperations = "5.5.1"
-Test = "1"
-TestExtras = "0.3"
-VectorInterface = "0.2, 0.3, 0.4, 0.5"
-cuTENSOR = "2.3"
+TimerOutputs = "0.5.29"
+VectorInterface = "0.2, 0.3, 0.4, 0.5, 0.6"
 julia = "1.10"
-
-[extras]
-Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
-CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
-Combinatorics = "861a8166-3701-5b0c-9a16-15d98fcdc6aa"
-ParallelTestRunner = "d3525ed8-44d0-4b2c-a655-542cee43accc"
-Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
-Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
-TensorKitTensors = "41b62e7d-e9d1-4e23-942c-79a97adf954b"
-Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
-TestExtras = "5ed8adda-3752-4e41-b88a-e8b09835ee3a"
-cuTENSOR = "011b41b2-24ef-40a8-b3eb-fa098493e9e1"
-
-[targets]
-test = ["Aqua", "Adapt", "CUDA", "cuTENSOR", "Pkg", "Test", "TestExtras", "Plots", "Combinatorics", "ParallelTestRunner", "TensorKitTensors"]

benchmark/MPSKitBenchmarks/MPSKitBenchmarks.jl

@@ -14,10 +14,12 @@ BenchmarkTools.DEFAULT_PARAMETERS.memory_tolerance = 0.01
 const PARAMS_PATH = joinpath(@__DIR__, "etc", "params.json")
 const SUITE = BenchmarkGroup()
 const MODULES = Dict{String, Symbol}(
-    "derivatives" => :DerivativesBenchmarks
+    "derivatives" => :DerivativesBenchmarks,
+    "timestep" => :TimestepBenchmarks,
 )
 
 include("derivatives/DerivativesBenchmarks.jl")
+include("timestep/TimestepBenchmarks.jl")
 
 load!(id::AbstractString; kwargs...) = load!(SUITE, id; kwargs...)
 

benchmark/MPSKitBenchmarks/timestep/TimestepBenchmarks.jl

@@ -0,0 +1,26 @@
+module TimestepBenchmarks
+
+using BenchmarkTools
+using MPSKit
+using MPSKitModels
+
+const SUITE = BenchmarkGroup()
+const dt = 0.05
+
+const HAMILTONIANS = (
+    "tfim" => transverse_field_ising(),
+    "heis_xxx" => heisenberg_XXX(),
+)
+
+let g_top = addgroup!(SUITE, "make_time_mpo")
+    for (Hname, H) in HAMILTONIANS
+        g = addgroup!(g_top, Hname)
+        for N in (1, 2, 3)
+            alg = TaylorCluster(; N)
+            g["N=$N"] = @benchmarkable make_time_mpo($H, $dt, $alg)
+        end
+        g["WII"] = @benchmarkable make_time_mpo($H, $dt, $(MPSKit.WII()))
+    end
+end
+
+end # module

docs/Project.toml

@@ -1,3 +1,5 @@
+name = "MPSKitDocs"
+
 [deps]
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 DocumenterCitations = "daee34ce-89f3-4625-b898-19384cb65244"
@@ -12,5 +14,9 @@ Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 TensorKit = "07d1fe3e-3e46-537d-9eac-e9e13d0d4cec"
 TensorOperations = "6aa20fa7-93e2-5fca-9bc0-fbd0db3c71a2"
 
+[sources]
+MPSKit = {path = ".."}
+
 [compat]
 Documenter = "1.0"
+DocumenterInterLinks = "1"

docs/make.jl

@@ -2,7 +2,6 @@
 if Base.active_project() != joinpath(@__DIR__, "Project.toml")
     using Pkg
     Pkg.activate(@__DIR__)
-    Pkg.develop(PackageSpec(; path = (@__DIR__) * "/../"))
     Pkg.resolve()
     Pkg.instantiate()
 end
@@ -30,7 +29,7 @@ links = InterLinks(
     "TensorKit" => "https://quantumkithub.github.io/TensorKit.jl/stable/",
     "TensorOperations" => "https://quantumkithub.github.io/TensorOperations.jl/stable/",
     "KrylovKit" => "https://jutho.github.io/KrylovKit.jl/stable/",
-    "BlockTensorKit" => "https://lkdvos.github.io/BlockTensorKit.jl/dev/",
+    "BlockTensorKit" => "https://quantumkithub.github.io/BlockTensorKit.jl/dev/",
     "MatrixAlgebraKit" => "https://quantumkithub.github.io/MatrixAlgebraKit.jl/stable/",
     "MPSKitModels" => "https://quantumkithub.github.io/MPSKitModels.jl/dev/"
 )

docs/src/changelog.md

@@ -17,7 +17,7 @@ When making changes to this project, please update the "Unreleased" section with
 
 When releasing a new version, move the "Unreleased" changes to a new version section with the release date.
 
-## [Unreleased](https://github.com/QuantumKitHub/MPSKit.jl/compare/v0.13.10...HEAD)
+## [Unreleased](https://github.com/QuantumKitHub/MPSKit.jl/compare/v0.13.11...HEAD)
 
 ### Added
 
@@ -29,6 +29,35 @@ When releasing a new version, move the "Unreleased" changes to a new version sec
 
 ### Fixed
 
+### Performance
+
+## [0.13.11](https://github.com/QuantumKitHub/MPSKit.jl/compare/v0.13.10...v0.13.11) - 2026-05-04
+
+### Added
+
+- `MultilineMPO` space getters ([#407](https://github.com/QuantumKitHub/MPSKit.jl/pull/407))
+
+### Changed
+
+- Refactored time-evolution MPO construction ([#422](https://github.com/QuantumKitHub/MPSKit.jl/pull/422))
+- Updated `TensorKitManifolds` compat to 0.8 ([#421](https://github.com/QuantumKitHub/MPSKit.jl/pull/421))
+- Updated MatrixAlgebraKit algorithm specification ([#418](https://github.com/QuantumKitHub/MPSKit.jl/pull/418))
+- Preparations for GPU / non-CPU array support ([#375](https://github.com/QuantumKitHub/MPSKit.jl/pull/375), [#392](https://github.com/QuantumKitHub/MPSKit.jl/pull/392))
+- Generalized `calc_galerkin` to `AbstractMPS` ([#395](https://github.com/QuantumKitHub/MPSKit.jl/pull/395))
+- Removed explicit call to `InfiniteMPS` in VUMPS ([#396](https://github.com/QuantumKitHub/MPSKit.jl/pull/396))
+- Generalized `regauge!` to `AbstractVector` ([#393](https://github.com/QuantumKitHub/MPSKit.jl/pull/393))
+
+### Fixed
+
+- Various fixes for compatibility with latest TensorKit versions ([#416](https://github.com/QuantumKitHub/MPSKit.jl/pull/416))
+- `changebonds` inconsistencies ([#415](https://github.com/QuantumKitHub/MPSKit.jl/pull/415))
+- Small fixes for density operators ([#409](https://github.com/QuantumKitHub/MPSKit.jl/pull/409))
+- Tolerance on positivity test ([#398](https://github.com/QuantumKitHub/MPSKit.jl/pull/398))
+
+### Performance
+
+- Benchmarks and AC/AC2 contraction improvements ([#345](https://github.com/QuantumKitHub/MPSKit.jl/pull/345))
+
 ## [0.13.10](https://github.com/QuantumKitHub/MPSKit.jl/compare/v0.13.9...v0.13.10) - 2026-02-26
 
 ### Added

src/MPSKit.jl

@@ -62,7 +62,7 @@ using TensorKit
 using TensorKit: BraidingTensor
 using TensorKit: TupleTools as TT
 using MatrixAlgebraKit
-using MatrixAlgebraKit: TruncationStrategy, PolarViaSVD, LAPACK_SVDAlgorithm
+using MatrixAlgebraKit: TruncationStrategy
 using BlockTensorKit
 using BlockTensorKit: TensorMapSumSpace
 using TensorOperations
@@ -85,6 +85,7 @@ using Random
 using Base: @kwdef, @propagate_inbounds
 using LoggingExtras
 using OhMyThreads
+using TimerOutputs: TimerOutput, @timeit, timeit, reset_timer!, disable_timer!, enable_timer!
 
 # Includes
 # --------

src/algorithms/algorithm.jl

@@ -20,3 +20,13 @@ function Base.show(io::IO, ::MIME"text/plain", alg::Algorithm)
     end
     return nothing
 end
+
+# TIMEROUTPUT utility
+# -------------------
+# Shared sentinel passed as the default `timeroutput` kwarg by functions that optionally accept a timer.
+# `@timeit` is a no-op when the destination timer is disabled, so unrelated callers pay no instrumentation cost.
+# The merge sites that mutate `timeroutput` must gate on `timeroutput.enabled` so they don't pollute this shared object.
+const DISABLED_TIMER = let t = TimerOutput("DISABLED")
+    disable_timer!(t)
+    t
+end