1 /* -*- mode: c; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; c-file-style: "stroustrup"; -*-
4 * This file is part of Gromacs Copyright (c) 1991-2008
5 * David van der Spoel, Erik Lindahl, Berk Hess, University of Groningen.
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19 #ifndef _domdec_network_h
20 #define _domdec_network_h
23 #include "types/commrec.h"
30 dddirForward,dddirBackward
33 /* Move integers in the comm. region one cell along the domain decomposition
34 * in the dimension indexed by ddimind
35 * forward (direction=dddirFoward) or backward (direction=dddirBackward).
38 dd_sendrecv_int(const gmx_domdec_t *dd,
39 int ddimind,int direction,
43 /* Move reals in the comm. region one cell along the domain decomposition
44 * in the dimension indexed by ddimind
45 * forward (direction=dddirFoward) or backward (direction=dddirBackward).
48 dd_sendrecv_real(const gmx_domdec_t *dd,
49 int ddimind,int direction,
53 /* Move revc's in the comm. region one cell along the domain decomposition
54 * in dimension indexed by ddimind
55 * forward (direction=dddirFoward) or backward (direction=dddirBackward).
58 dd_sendrecv_rvec(const gmx_domdec_t *dd,
59 int ddimind,int direction,
64 /* Move revc's in the comm. region one cell along the domain decomposition
65 * in dimension indexed by ddimind
66 * simultaneously in the forward and backward directions.
69 dd_sendrecv2_rvec(const gmx_domdec_t *dd,
71 rvec *buf_s_fw,int n_s_fw,
72 rvec *buf_r_fw,int n_r_fw,
73 rvec *buf_s_bw,int n_s_bw,
74 rvec *buf_r_bw,int n_r_bw);
77 /* The functions below perform the same operations as the MPI functions
78 * with the same name appendices, but over the domain decomposition
80 * The DD master node is the master for these operations.
84 dd_bcast(gmx_domdec_t *dd,int nbytes,void *data);
86 /* Copies src to dest on the master node and then broadcasts */
88 dd_bcastc(gmx_domdec_t *dd,int nbytes,void *src,void *dest);
91 dd_scatter(gmx_domdec_t *dd,int nbytes,void *src,void *dest);
94 dd_gather(gmx_domdec_t *dd,int nbytes,void *src,void *dest);
96 /* If rcount==0, rbuf is allowed to be NULL */
98 dd_scatterv(gmx_domdec_t *dd,
99 int *scounts,int *disps,void *sbuf,
100 int rcount,void *rbuf);
102 /* If scount==0, sbuf is allowed to be NULL */
104 dd_gatherv(gmx_domdec_t *dd,
105 int scount,void *sbuf,
106 int *rcounts,int *disps,void *rbuf);
112 #endif /* _domdec_network_h */