1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_BTL_IB_ENDPOINT_H
#define MCA_BTL_IB_ENDPOINT_H
#include "opal/class/opal_list.h"
#include "opal/event/event.h"
#include "ompi/mca/pml/pml.h"
#include "ompi/mca/btl/btl.h"
#include "btl_openib_frag.h"
#include "btl_openib.h"
#include "btl_openib_eager_rdma.h"
#include <errno.h>
#include <string.h>
#include "ompi/mca/btl/base/btl_base_error.h"
#include "ompi/mca/mpool/openib/mpool_openib.h"
#if defined(c_plusplus) || defined(__cplusplus)
extern "C" {
#endif
OBJ_CLASS_DECLARATION(mca_btl_openib_endpoint_t);
struct mca_btl_openib_frag_t;
struct mca_btl_openib_port_info_t {
uint16_t subnet;
};
typedef struct mca_btl_openib_port_info_t mca_btl_openib_port_info_t;
/**
* State of IB endpoint connection.
*/
typedef enum {
/* Defines the state in which this BTL instance
* has started the process of connection */
MCA_BTL_IB_CONNECTING,
/* Waiting for ack from endpoint */
MCA_BTL_IB_CONNECT_ACK,
/*Waiting for final connection ACK from endpoint */
MCA_BTL_IB_WAITING_ACK,
/* Connected ... both sender & receiver have
* buffers associated with this connection */
MCA_BTL_IB_CONNECTED,
/* Connection is closed, there are no resources
* associated with this */
MCA_BTL_IB_CLOSED,
/* Maximum number of retries have been used.
* Report failure on send to upper layer */
MCA_BTL_IB_FAILED
} mca_btl_openib_endpoint_state_t;
struct mca_btl_openib_rem_info_t {
uint32_t rem_qp_num_hp;
uint32_t rem_qp_num_lp;
/* Remote QP number (Low and High priority) */
uint16_t rem_lid;
/* Local identifier of the remote process */
uint32_t rem_psn_hp;
uint32_t rem_psn_lp;
/* Remote processes port sequence number (Low and High) */
uint16_t rem_subnet;
/* subnet of remote process */
};
typedef struct mca_btl_openib_rem_info_t mca_btl_openib_rem_info_t;
/**
* An abstraction that represents a connection to a endpoint process.
* An instance of mca_btl_base_endpoint_t is associated w/ each process
* and BTL pair at startup. However, connections to the endpoint
* are established dynamically on an as-needed basis:
*/
struct mca_btl_base_endpoint_t {
opal_list_item_t super;
struct mca_btl_openib_module_t* endpoint_btl;
/**< BTL instance that created this connection */
struct mca_btl_openib_proc_t* endpoint_proc;
/**< proc structure corresponding to endpoint */
mca_btl_openib_endpoint_state_t endpoint_state;
/**< current state of the connection */
size_t endpoint_retries;
/**< number of connection retries attempted */
double endpoint_tstamp;
/**< timestamp of when the first connection was attempted */
opal_mutex_t endpoint_lock;
/**< lock for concurrent access to endpoint state */
opal_list_t pending_send_frags;
/**< list of pending send frags for this endpotint */
opal_list_t pending_frags_hp;
/**< list of pending high priority frags */
opal_list_t pending_frags_lp;
/**< list of pending low priority frags */
mca_btl_openib_rem_info_t rem_info;
uint32_t lcl_psn_hp;
uint32_t lcl_psn_lp;
/* Local processes port sequence number (Low and High) */
struct ibv_qp* lcl_qp_hp;
struct ibv_qp* lcl_qp_lp;
/* Local QP (Low and High) */
struct ibv_qp_attr* lcl_qp_attr_hp;
struct ibv_qp_attr* lcl_qp_attr_lp;
/* Local QP attributes (Low and High) */
int32_t sd_tokens_hp; /**< number of high priority send tokens */
int32_t sd_tokens_lp; /**< number of low priority send tokens */
int32_t get_tokens; /**< number of available get tokens */
int32_t rd_posted_hp; /**< number of high priority descriptors posted to the nic*/
int32_t rd_posted_lp; /**< number of low priority descriptors posted to the nic*/
int32_t rd_credits_hp; /**< number of high priority credits to return to peer */
int32_t rd_credits_lp; /**< number of low priority credits to return to peer */
int32_t sd_credits_hp; /**< number of send wqe entries being used to return credits */
int32_t sd_credits_lp; /**< number of send wqe entries being used to return credits */
int32_t sd_wqe_hp; /**< number of available send wqe entries */
int32_t sd_wqe_lp; /**< number of available send wqe entries */
uint16_t subnet; /**< subnet of this endpoint*/
uint32_t eager_recv_count; /**< number of eager received */
mca_btl_openib_eager_rdma_remote_t eager_rdma_remote;
/**< info about remote RDMA buffer */
mca_btl_openib_eager_rdma_local_t eager_rdma_local;
/**< info about local RDMA buffer */
size_t eager_rdma_index; /**< index into RDMA buffers pointer array */
};
typedef struct mca_btl_base_endpoint_t mca_btl_base_endpoint_t;
typedef mca_btl_base_endpoint_t mca_btl_openib_endpoint_t;
int mca_btl_openib_endpoint_send(mca_btl_base_endpoint_t* endpoint, struct mca_btl_openib_frag_t* frag);
int mca_btl_openib_endpoint_connect(mca_btl_base_endpoint_t*);
void mca_btl_openib_post_recv(void);
void mca_btl_openib_endpoint_send_credits_hp(mca_btl_base_endpoint_t*);
void mca_btl_openib_endpoint_send_credits_lp(mca_btl_base_endpoint_t*);
void mca_btl_openib_endpoint_connect_eager_rdma(mca_btl_openib_endpoint_t*);
#define MCA_BTL_OPENIB_ENDPOINT_POST_RR_HIGH(endpoint, \
additional) \
{ \
do { \
mca_btl_openib_module_t * openib_btl = endpoint->endpoint_btl; \
OPAL_THREAD_LOCK(&openib_btl->ib_lock); \
if(endpoint->rd_posted_hp <= mca_btl_openib_component.rd_low+additional && \
endpoint->rd_posted_hp < openib_btl->rd_num) { \
MCA_BTL_OPENIB_ENDPOINT_POST_RR_SUB(openib_btl->rd_num - \
endpoint->rd_posted_hp, \
endpoint, \
&openib_btl->recv_free_eager, \
endpoint->rd_posted_hp, \
endpoint->rd_credits_hp, \
endpoint->lcl_qp_hp); \
} \
OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); \
} while(0); \
}
#define MCA_BTL_OPENIB_ENDPOINT_POST_RR_LOW(endpoint, \
additional) { \
do { \
mca_btl_openib_module_t * openib_btl = endpoint->endpoint_btl; \
OPAL_THREAD_LOCK(&openib_btl->ib_lock); \
if(endpoint->rd_posted_lp <= mca_btl_openib_component.rd_low+additional && \
endpoint->rd_posted_lp < openib_btl->rd_num){ \
MCA_BTL_OPENIB_ENDPOINT_POST_RR_SUB(openib_btl->rd_num - \
endpoint->rd_posted_lp, \
endpoint, \
&openib_btl->recv_free_max, \
endpoint->rd_posted_lp, \
endpoint->rd_credits_lp, \
endpoint->lcl_qp_lp \
); } \
OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); \
} while(0); \
}
#define MCA_BTL_OPENIB_ENDPOINT_POST_RR_SUB(cnt, \
my_endpoint, \
frag_list, \
rd_posted, \
rd_credits, \
qp ) \
do { \
int32_t i; \
int rc; \
int32_t num_post = cnt; \
struct ibv_recv_wr* bad_wr; \
for(i = 0; i < num_post; i++) { \
ompi_free_list_item_t* item; \
mca_btl_openib_frag_t* frag; \
OMPI_FREE_LIST_WAIT(frag_list, item, rc); \
frag = (mca_btl_openib_frag_t*) item; \
frag->endpoint = my_endpoint; \
frag->sg_entry.length = frag->size + \
((unsigned char*) frag->segment.seg_addr.pval- \
(unsigned char*) frag->hdr); \
if(ibv_post_recv(qp, \
&frag->wr_desc.rd_desc, \
&bad_wr)) { \
BTL_ERROR(("error posting receive errno says %s\n", strerror(errno))); \
return OMPI_ERROR; \
}\
}\
OPAL_THREAD_ADD32(&(rd_posted), num_post); \
OPAL_THREAD_ADD32(&(rd_credits), num_post); \
} while(0);
#define BTL_OPENIB_INSERT_PENDING(frag, frag_list, tokens, lock) \
do{ \
OPAL_THREAD_LOCK(&lock); \
opal_list_append(&frag_list, (opal_list_item_t *)frag); \
OPAL_THREAD_UNLOCK(&lock); \
OPAL_THREAD_ADD32(&tokens, 1); \
} while(0);
#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif
|
