src/gromacs/mdlib/nbnxn_simd.h

   1 /*
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  35
  36 #ifndef _nbnxn_simd_h
  37 #define _nbnxn_simd_h
  38
  39 #include "gromacs/math/vectypes.h"
  40 #include "gromacs/simd/simd.h"
  41 #include "gromacs/utility/real.h"
  42
  43 #if GMX_SIMD
  44 /* The nbnxn SIMD 4xN and 2x(N+N) kernels can be added independently.
  45  * Currently the 2xNN SIMD kernels only make sense with:
  46  *  8-way SIMD: 4x4 setup, works with AVX-256 in single precision
  47  * 16-way SIMD: 4x8 setup, works with Intel MIC in single precision
  48  */
  49 #if GMX_SIMD_REAL_WIDTH == 2 || GMX_SIMD_REAL_WIDTH == 4 || GMX_SIMD_REAL_WIDTH == 8
  50 #define GMX_NBNXN_SIMD_4XN
  51 #endif
  52 #if GMX_SIMD_REAL_WIDTH == 8 || GMX_SIMD_REAL_WIDTH == 16
  53 #define GMX_NBNXN_SIMD_2XNN
  54 #endif
  55
  56 #if !(defined GMX_NBNXN_SIMD_4XN || defined GMX_NBNXN_SIMD_2XNN)
  57 #error "No SIMD kernel type defined"
  58 #endif
  59
  60 #endif // GMX_SIMD
  61
  62 #endif /* _nbnxn_simd_h */