1. 07 Aug, 2025 1 commit
    • feiglab's avatar
      fix for scaled 1-4 LJ interactions when NBFIX is present in Gromacs topology file (#5032) · d2a5d7e4
      feiglab authored
      * fix to correctly read Gromacs topology files for CHARMM force field
      
      * updated fix to correctly read topology files with NBFIX and different combination rules
      
      * fixes to read topology files with NBFIX and different combination rules
      
      * changed default for useDispersionCorrection to True
      
      * changed docstring default for useDispersionCorrection to 'True'
      
      * fix scaling of 1-4 LJ pairs when NBFIX is used
      d2a5d7e4
  2. 06 Aug, 2025 3 commits
  3. 05 Aug, 2025 4 commits
  4. 04 Aug, 2025 2 commits
  5. 29 Jul, 2025 2 commits
  6. 28 Jul, 2025 2 commits
  7. 25 Jul, 2025 1 commit
  8. 23 Jul, 2025 3 commits
  9. 19 Jul, 2025 1 commit
  10. 18 Jul, 2025 1 commit
  11. 16 Jul, 2025 2 commits
  12. 15 Jul, 2025 1 commit
  13. 09 Jul, 2025 2 commits
  14. 07 Jul, 2025 1 commit
  15. 03 Jul, 2025 1 commit
  16. 02 Jul, 2025 5 commits
  17. 18 Jun, 2025 1 commit
  18. 07 Jun, 2025 2 commits
    • Anton Gorenko's avatar
      Use fixed point charge spreading on RDNA4 (#4960) · 1ce5d91d
      Anton Gorenko authored
      * Use fixed point spread charge on RDNA4 as it is faster
      
      Even though RDNA4 (gfx12) has global_atomic_add_f32, micro-benchmarks and OpenMM benchmarks show
      that it is very slow compared to global_atomic_add_u64.
      
      * Add a workaround for fixed point gridSpreadCharge on RDNA4
      
      Workaround for rare cases when few values of pmeGrid are very large and
      incorrect. The cause is unknown. Why this workaround or other irrelevant
      changes like printf help is also unknown.
      1ce5d91d
    • Anton Gorenko's avatar
      Fix computeNonbonded hang on the HIP platform (#4959) · a4b43a04
      Anton Gorenko authored
      * Add a workaround for infinite loop in computeNonbonded (HIP)
      
      computeNonbonded hangs in some tests (without neighbor list).
      Reproducible on ROCm 6.4 and 6.4.1 (maybe on older versions too) on various architectures (both CDNA and RDNA).
      Affected tests: TestHipATMForce, TestHipMonteCarloBarostat, TestHipNonbondedForce, TestHipVirtualSites.
      
      Disassembly shows that the compiler splits branches of `if (skipBase+tgx < NUM_TILES_WITH_EXCLUSIONS)` and does
      `SHFL(skipTiles, TILE_SIZE-1) < pos` checks in them separately, even though `__builtin_amdgcn_ds_bpermute`
      is a convergent function. Apparently in this case not all lanes participate in each call.
      
      * Simplify includeTile check using ballot
      a4b43a04
  19. 05 Jun, 2025 4 commits
  20. 02 Jun, 2025 1 commit