1 /* -*- mode: c; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; c-file-style: "stroustrup"; -*-
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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
29 dddirForward,dddirBackward
32 /* Move integers in the comm. region one cell along the domain decomposition
33 * in the dimension indexed by ddimind
34 * forward (direction=dddirFoward) or backward (direction=dddirBackward).
37 dd_sendrecv_int(const gmx_domdec_t *dd,
38 int ddimind,int direction,
42 /* Move reals in the comm. region one cell along the domain decomposition
43 * in the dimension indexed by ddimind
44 * forward (direction=dddirFoward) or backward (direction=dddirBackward).
47 dd_sendrecv_real(const gmx_domdec_t *dd,
48 int ddimind,int direction,
52 /* Move revc's in the comm. region one cell along the domain decomposition
53 * in dimension indexed by ddimind
54 * forward (direction=dddirFoward) or backward (direction=dddirBackward).
57 dd_sendrecv_rvec(const gmx_domdec_t *dd,
58 int ddimind,int direction,
63 /* Move revc's in the comm. region one cell along the domain decomposition
64 * in dimension indexed by ddimind
65 * simultaneously in the forward and backward directions.
68 dd_sendrecv2_rvec(const gmx_domdec_t *dd,
70 rvec *buf_s_fw,int n_s_fw,
71 rvec *buf_r_fw,int n_r_fw,
72 rvec *buf_s_bw,int n_s_bw,
73 rvec *buf_r_bw,int n_r_bw);
76 /* The functions below perform the same operations as the MPI functions
77 * with the same name appendices, but over the domain decomposition
79 * The DD master node is the master for these operations.
83 dd_bcast(gmx_domdec_t *dd,int nbytes,void *data);
85 /* Copies src to dest on the master node and then broadcasts */
87 dd_bcastc(gmx_domdec_t *dd,int nbytes,void *src,void *dest);
90 dd_scatter(gmx_domdec_t *dd,int nbytes,void *src,void *dest);
93 dd_gather(gmx_domdec_t *dd,int nbytes,void *src,void *dest);
95 /* If rcount==0, rbuf is allowed to be NULL */
97 dd_scatterv(gmx_domdec_t *dd,
98 int *scounts,int *disps,void *sbuf,
99 int rcount,void *rbuf);
101 /* If scount==0, sbuf is allowed to be NULL */
103 dd_gatherv(gmx_domdec_t *dd,
104 int scount,void *sbuf,
105 int *rcounts,int *disps,void *rbuf);
111 #endif /* _domdec_network_h */