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AVX-512 First Attempt

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[Quy Anh] «Elliot» Nguyen
2026-05-25 00:59:19 +02:00
committed by Linus Baumberger
parent 174d167b9a
commit 7b3d554117
5 changed files with 467 additions and 13 deletions
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headers/constants.hpp
+16 -1
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@@ -2,6 +2,10 @@
#include <cmath>
#include <new>
#ifdef __x86_64__
#include "immintrin.h"
#endif
//
// $\frac{1}{\tau_{\alpha}}$; $\tau_{\alpha} = 0.5s$
//
@@ -96,10 +100,21 @@ const double EPS = 1e-9;
// Squared numerical tolerance
const double EPS_SQ = EPS * EPS;
#ifdef __AVX512F__
const __m512d LN2_VEC = _mm512_set1_pd(log(2));
const __m512d ZERO_VEC = _mm512_setzero_pd();
const __m512d NEG_TWO_SIGMA_INV_VEC = _mm512_set1_pd(NEG_TWO_SIGMA_INV);
const __m512d NEG_V0_AB_DIV_TWO_SIGMA_VEC = _mm512_set1_pd(NEG_V0_AB_div_TWO_SIGMA);
const __m512d c_neg_times_dt_vec = _mm512_set1_pd(c_neg_times_dt);
const __m512d cos_phi_inv_vec = _mm512_set1_pd(cos_phi_inv);
const __m512d dt_neg_vec = _mm512_set1_pd(dt_neg);
#endif
// Cutoff for pedestrian-pedestrian repulsion
const double CUTOFF = 12.0;
const double CUTOFF_SQ = CUTOFF * CUTOFF;
const double cos_phi_sq = cos_phi * cos_phi;
const size_t CACHE_BLOCK_SIZE = std::hardware_destructive_interference_size;
const size_t CACHE_BLOCK_SIZE = std::hardware_destructive_interference_size;