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Neko 0.9.99
A portable framework for high-order spectral element flow simulations
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fusedcg_aux.hip
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1/*
2 Copyright (c) 2021-2025, The Neko Authors
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4
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9 * Redistributions of source code must retain the above copyright
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12 * Redistributions in binary form must reproduce the above
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15 with the distribution.
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17 * Neither the name of the authors nor the names of its
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19 from this software without specific prior written permission.
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21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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24 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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27 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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33*/
34
35#include <hip/hip_runtime.h>
36#include "fusedcg_kernel.h"
38#include <device/hip/check.h>
39
46
47extern "C" {
48
51
52#ifdef HAVE_RCCL
55#endif
56
57
58
59 void hip_fusedcg_update_p(void *p, void *z, void *po, real *beta, int *n) {
60
61 const dim3 nthrds(1024, 1, 1);
62 const dim3 nblcks(((*n)+1024 - 1)/ 1024, 1, 1);
63 const hipStream_t stream = (hipStream_t) glb_cmd_queue;
64
66 nblcks, nthrds, 0, stream,
67 (real *) p, (real *) z, (real *) po, *beta, *n);
69
70 }
71
72 void hip_fusedcg_update_x(void *x, void *p, void *alpha, int *p_cur, int *n) {
73
74 const dim3 nthrds(1024, 1, 1);
75 const dim3 nblcks(((*n)+1024 - 1)/ 1024, 1, 1);
76 const hipStream_t stream = (hipStream_t) glb_cmd_queue;
77
79 nblcks, nthrds, 0, stream,
80 (real *) x, (const real **) p,
81 (const real *) alpha, *p_cur, *n);
83 }
84
85
86 real hip_fusedcg_part2(void *a, void *b, void *c,
87 void *alpha_d , real *alpha, int *p_cur, int * n) {
88
89 const dim3 nthrds(1024, 1, 1);
90 const dim3 nblcks(((*n)+1024 - 1)/ 1024, 1, 1);
91 const int nb = ((*n) + 1024 - 1)/ 1024;
92 const hipStream_t stream = (hipStream_t) glb_cmd_queue;
93
94 if (fusedcg_buf != NULL && fusedcg_buf_len < nb) {
98 }
99
100 if (fusedcg_buf == NULL){
104 }
105
106 /* Store alpha(p_cur) in pinned memory */
107 fusedcg_buf[1] = (*alpha);
108
109 /* Update alpha_d(p_cur) = alpha(p_cur) */
110 real *alpha_d_p_cur = ((real *) alpha_d) + ((*p_cur - 1));
112 hipMemcpyHostToDevice, stream));
113
115 nblcks, nthrds, 0, stream,
116 (real *) a, (real *) b, (real *) c,
117 *alpha, fusedcg_buf_d, * n);
119
121 1, 1024, 0, stream, fusedcg_buf_d, nb);
123
124#ifdef HAVE_RCCL
126 DEVICE_NCCL_SUM, stream);
128 hipMemcpyDeviceToHost, stream));
130#elif HAVE_DEVICE_MPI
133 sizeof(real), DEVICE_MPI_SUM);
134#else
136 hipMemcpyDeviceToHost, stream));
138#endif
139
140 return fusedcg_buf[0];
141 }
142}
143
__global__ void const T *__restrict__ x
__global__ void dirichlet_apply_scalar_kernel(const int *__restrict__ msk, T *__restrict__ x, const T g, const int m)
double real
#define DEVICE_MPI_SUM
void device_mpi_allreduce(void *buf_d, void *buf, int count, int nbytes, int op)
#define DEVICE_NCCL_SUM
void device_nccl_allreduce(void *sbuf_d, void *rbuf_d, int count, int nbytes, int op, void *stream)
void hip_fusedcg_update_x(void *x, void *p, void *alpha, int *p_cur, int *n)
real hip_fusedcg_part2(void *a, void *b, void *c, void *alpha_d, real *alpha, int *p_cur, int *n)
int fusedcg_buf_len
real * fusedcg_buf
void hip_fusedcg_update_p(void *p, void *z, void *po, real *beta, int *n)
real * fusedcg_buf_d
#define HIP_CHECK(err)
Definition check.h:8