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Optimize func_solve_init#25

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EricKing626 wants to merge 3 commits intoamd-integrationfrom
eric_dev_0424
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Optimize func_solve_init#25
EricKing626 wants to merge 3 commits intoamd-integrationfrom
eric_dev_0424

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@EricKing626
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@EricKing626 EricKing626 commented Apr 24, 2026

  1. Speedup tiled Hessian kernel

Use direct lower-triangle indexing for Hessian computation
Eliminates redundant upper-triangle calculations in diagonal tiles
Reduces computation overhead in func_hessian_direct_tiled

  1. Speed up rigid constraint solver init ([MISC] Speed up rigid constraint solver init. Genesis-Embodied-AI/Genesis#2521)

Add parallel initialization strategy for constraint Jacobian
Parallelize over (constraints × envs) when GPU is under-saturated (n_envs < GPU cores)
Auto-detects AMD/NVIDIA hardware and adjusts parallelization accordingly
Implements _initialize_Jaref_parallel() for better GPU utilization

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pre-submit is 752k

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