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Configurable backend and per-solve scratch allocator - #467

Merged

lkdvos merged 25 commits into

mainfrom

reuse-buf

Aug 5, 2026

Merged

Configurable backend and per-solve scratch allocator#467
lkdvos merged 25 commits into
mainfrom
reuse-buf

Commits on Aug 3, 2026
- Defaults: add `backend()` and a session-wide buffering switch
  
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- Add `default_allocator`: scratch space for local updates
  
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- derivatives: backend and allocator on the derivative operators
  
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- changebonds: configurable backend and allocator
  
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- DMRG, IDMRG: configurable backend, reused allocator
  
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- TDVP: configurable, reused backend and allocator
  
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- VUMPS, VOMPS: configurable backend and allocator
  
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- GradientGrassmann: configurable backend and allocator
  
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- excitations, ED, DDMRG: configurable backend and allocator
  
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- docs: the allocator is internal, and device-aware
  
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- test: cover the allocator selector, scheduler granularity and GPU algorithms
  
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- benchmark: sbatch script for the CUDA test suite
  
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- BUG: configurable backend, reused allocator
  
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- derivatives: route the backend and allocator through the projection actions
  
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- calc_galerkin: accept a backend and allocator
  
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- IDMRG: obtain the allocator once per solve
  
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- derivatives: restrict the Jordan operators' backend type parameter
  
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- docs: changelog entry for the backend setting and the allocator
  
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- test: fix the GPU setup's imports, and cover BUG on device
  
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- changebonds: hand the expansion the sweep's allocator
  
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  f587f79
Commits on Aug 4, 2026
- derivatives: `prepare_operator!!` reads the backend and allocator off the operator
  
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- test: fold the allocator coverage into the existing suites
  
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- Trim allocator comments, and drop the GPU benchmark script
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- test: do not shadow the starting state in the scheduler-parametrized testsets
  
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  0c9ec86
- test: build the scheduler-parametrized starting states from scratch
  
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  1d34dd9

Commits

Commits on Aug 3, 2026

Commits on Aug 4, 2026