Hi,
As part of my research work, I would like to compare the latency of the
interconnection network (connecting the various on-chip cores) and
computational latency of each core. I am assuming a CMP with on-chip
interconnection network. The number of cores on the chip is varying from
2 to the max allowed in Flexus. I have a few clarifications to make
1) Can I use DSMFlex.OoO for the above work i.e a CMP with on-chip
interconnection network?
2) I tried DSMFlex.OoO with test application given in the starting guide
with 8-cores and obtained some statistics. I would like to know how to
calculate the network latency from the obtained results? ( are the
latencies given in number of cycles). Anyway I have attached the results I
obtained at the end of this mail for clarity.
3) What other topologies I can use other than torus (the file I see in
DSMFlex.OoO folder)? What is the procedure to use a topology say a mesh or
any other topology other than torus?
4) What is the max no of cores I can use in DSMFlex.OoO?
Thanks in Advance.
The results I obtained are attached below: ( I am showing only the network
results). I don't know how to get the latency of the interconnection
network from these results. What is the unit of the network latency shown
here? Is it number of cycles?
sys-network-AcceptWaitTime VC[0]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-AcceptWaitTime VC[1]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-AcceptWaitTime VC[2]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-AtBufferHeadTime VC[0]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-AtBufferHeadTime VC[1]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-AtBufferHeadTime VC[2]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-BufferTime VC[0]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-BufferTime VC[1]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-BufferTime VC[2]
Count Pct Value
--------- ------- ----------
0 100.00% 0 elements
Average value: nan
sys-network-Maximum network input buffer depth12
sys-network-Network Message Hops 22639
sys-network-Network Messages Received 13460
sys-network-Network Messages Received:Data5426
sys-network-Network Messages Received:NoData8034
sys-network-NetworkLatency VC[0]
Count Pct Value
1791 38.50% 108
1398 30.05% 210
486 10.45% 312
33 0.71% 110
26 0.56% 111
25 0.54% 212
22 0.47% 211
21 0.45% 213
21 0.45% 214
20 0.43% 216
19 0.41% 215
18 0.39% 112
17 0.37% 109
15 0.32% 113
15 0.32% 231
14 0.30% 114
14 0.30% 313
11 0.24% 228
11 0.24% 134
11 0.24% 224
10 0.21% 232
9 0.19% 218
9 0.19% 117
9 0.19% 315
8 0.17% 121
8 0.17% 219
8 0.17% 129
8 0.17% 230
8 0.17% 243
8 0.17% 314
7 0.15% 220
7 0.15% 236
7 0.15% 223
7 0.15% 244
7 0.15% 130
7 0.15% 242
7 0.15% 318
6 0.13% 123
6 0.13% 125
6 0.13% 317
6 0.13% 272
6 0.13% 275
6 0.13% 239
6 0.13% 149
5 0.11% 316
5 0.11% 221
5 0.11% 119
5 0.11% 217
5 0.11% 332
5 0.11% 330
5 0.11% 249
5 0.11% 227
5 0.11% 362
5 0.11% 190
5 0.11% 326
5 0.11% 234
5 0.11% 240
5 0.11% 245
5 0.11% 158
5 0.11% 340
5 0.11% 342
5 0.11% 238
5 0.11% 137
4 0.09% 333
4 0.09% 225
4 0.09% 116
4 0.09% 118
4 0.09% 159
4 0.09% 392
4 0.09% 124
4 0.09% 329
4 0.09% 328
4 0.09% 226
4 0.09% 168
4 0.09% 237
4 0.09% 254
4 0.09% 128
4 0.09% 229
4 0.09% 347
4 0.09% 322
4 0.09% 139
4 0.09% 368
4 0.09% 138
4 0.09% 135
4 0.09% 247
3 0.06% 351
3 0.06% 335
3 0.06% 325
3 0.06% 320
3 0.06% 338
3 0.06% 296
3 0.06% 294
3 0.06% 277
3 0.06% 447
3 0.06% 344
3 0.06% 269
3 0.06% 268
3 0.06% 345
3 0.06% 263
3 0.06% 262
3 0.06% 261
3 0.06% 259
3 0.06% 258
3 0.06% 529
3 0.06% 250
3 0.06% 248
3 0.06% 147
3 0.06% 173
3 0.06% 142
3 0.06% 141
3 0.06% 136
3 0.06% 378
3 0.06% 406
3 0.06% 363
3 0.06% 120
3 0.06% 354
3 0.06% 233
3 0.06% 235
3 0.06% 241
2 0.04% 339
2 0.04% 161
2 0.04% 293
2 0.04% 156
2 0.04% 302
2 0.04% 341
2 0.04% 309
2 0.04% 409
2 0.04% 389
2 0.04% 145
2 0.04% 407
2 0.04% 319
2 0.04% 323
2 0.04% 132
2 0.04% 131
2 0.04% 395
2 0.04% 122
2 0.04% 331
2 0.04% 334
2 0.04% 365
2 0.04% 348
2 0.04% 426
2 0.04% 369
2 0.04% 255
2 0.04% 420
2 0.04% 266
2 0.04% 252
2 0.04% 490
2 0.04% 174
2 0.04% 488
2 0.04% 375
2 0.04% 170
2 0.04% 353
2 0.04% 418
2 0.04% 276
2 0.04% 650
2 0.04% 283
129 2.77% in 129 undisplayed elements
--------- ------- ----------
4652 100.00% 285 elements
Average value: 183.30
sys-network-NetworkLatency VC[1]
Count Pct Value
582 28.08% 108
479 23.11% 210
175 8.44% 110
159 7.67% 312
78 3.76% 212
46 2.22% 214
44 2.12% 114
30 1.45% 112
23 1.11% 216
17 0.82% 116
14 0.68% 118
13 0.63% 314
12 0.58% 220
11 0.53% 109
10 0.48% 218
9 0.43% 130
9 0.43% 111
9 0.43% 117
8 0.39% 122
8 0.39% 209
7 0.34% 324
7 0.34% 223
7 0.34% 322
7 0.34% 320
6 0.29% 224
6 0.29% 211
6 0.29% 113
6 0.29% 215
6 0.29% 133
6 0.29% 315
6 0.29% 217
6 0.29% 323
6 0.29% 124
5 0.24% 313
5 0.24% 336
5 0.24% 213
5 0.24% 234
4 0.19% 221
4 0.19% 222
4 0.19% 334
4 0.19% 120
4 0.19% 326
4 0.19% 247
4 0.19% 246
4 0.19% 232
4 0.19% 228
4 0.19% 226
3 0.14% 233
3 0.14% 235
3 0.14% 335
3 0.14% 393
3 0.14% 243
3 0.14% 230
3 0.14% 265
3 0.14% 317
3 0.14% 318
3 0.14% 225
3 0.14% 107
3 0.14% 115
3 0.14% 119
3 0.14% 135
3 0.14% 121
3 0.14% 142
3 0.14% 128
3 0.14% 144
2 0.10% 254
2 0.10% 321
2 0.10% 377
2 0.10% 319
2 0.10% 136
2 0.10% 266
2 0.10% 268
2 0.10% 270
2 0.10% 273
2 0.10% 360
2 0.10% 316
2 0.10% 131
2 0.10% 354
2 0.10% 134
2 0.10% 343
2 0.10% 340
2 0.10% 302
2 0.10% 331
2 0.10% 329
2 0.10% 164
2 0.10% 163
2 0.10% 229
2 0.10% 325
2 0.10% 231
2 0.10% 148
2 0.10% 123
2 0.10% 145
2 0.10% 394
2 0.10% 125
2 0.10% 240
2 0.10% 242
2 0.10% 244
2 0.10% 141
2 0.10% 249
2 0.10% 386
71 3.42% in 71 undisplayed elements
--------- ------- ----------
2073 100.00% 171 elements
Average value: 177.64
sys-network-NetworkLatency VC[2]
Count Pct Value
1949 28.94% 108
1393 20.68% 210
446 6.62% 312
179 2.66% 110
129 1.92% 240
115 1.71% 122
110 1.63% 224
63 0.94% 212
60 0.89% 314
54 0.80% 109
48 0.71% 220
47 0.70% 138
43 0.64% 228
42 0.62% 126
40 0.59% 222
39 0.58% 120
33 0.49% 211
31 0.46% 112
31 0.46% 144
29 0.43% 118
29 0.43% 342
27 0.40% 330
27 0.40% 324
26 0.39% 246
25 0.37% 234
25 0.37% 216
24 0.36% 140
24 0.36% 114
23 0.34% 113
23 0.34% 136
22 0.33% 348
21 0.31% 209
21 0.31% 130
21 0.31% 213
19 0.28% 242
19 0.28% 252
19 0.28% 162
18 0.27% 366
18 0.27% 215
18 0.27% 326
17 0.25% 116
17 0.25% 322
17 0.25% 225
17 0.25% 223
17 0.25% 230
16 0.24% 107
16 0.24% 258
16 0.24% 238
16 0.24% 236
16 0.24% 119
16 0.24% 128
15 0.22% 235
15 0.22% 121
15 0.22% 214
15 0.22% 221
14 0.21% 111
14 0.21% 270
13 0.19% 239
13 0.19% 226
13 0.19% 180
13 0.19% 139
13 0.19% 264
13 0.19% 256
12 0.18% 229
12 0.18% 241
12 0.18% 134
11 0.16% 115
11 0.16% 117
11 0.16% 132
11 0.16% 218
11 0.16% 232
11 0.16% 198
11 0.16% 402
11 0.16% 384
10 0.15% 142
10 0.15% 219
10 0.15% 133
10 0.15% 315
10 0.15% 311
10 0.15% 306
10 0.15% 292
10 0.15% 288
10 0.15% 123
9 0.13% 420
9 0.13% 313
9 0.13% 131
9 0.13% 262
9 0.13% 227
9 0.13% 150
9 0.13% 360
9 0.13% 328
8 0.12% 338
8 0.12% 334
8 0.12% 438
8 0.12% 272
8 0.12% 456
8 0.12% 333
8 0.12% 325
8 0.12% 317
8 0.12% 274
8 0.12% 243
8 0.12% 244
8 0.12% 248
7 0.10% 263
7 0.10% 323
7 0.10% 231
7 0.10% 250
7 0.10% 249
7 0.10% 357
7 0.10% 341
7 0.10% 160
7 0.10% 135
7 0.10% 141
7 0.10% 124
6 0.09% 255
6 0.09% 370
6 0.09% 351
6 0.09% 337
6 0.09% 137
6 0.09% 168
6 0.09% 474
6 0.09% 316
6 0.09% 146
6 0.09% 237
6 0.09% 356
6 0.09% 363
5 0.07% 268
5 0.07% 278
5 0.07% 367
5 0.07% 327
5 0.07% 282
5 0.07% 280
5 0.07% 368
5 0.07% 332
5 0.07% 410
5 0.07% 319
5 0.07% 147
5 0.07% 233
5 0.07% 298
5 0.07% 377
5 0.07% 378
5 0.07% 318
5 0.07% 254
5 0.07% 359
5 0.07% 492
5 0.07% 253
4 0.06% 352
4 0.06% 156
4 0.06% 154
4 0.06% 153
4 0.06% 300
4 0.06% 299
4 0.06% 321
4 0.06% 320
4 0.06% 157
4 0.06% 149
4 0.06% 285
4 0.06% 291
4 0.06% 217
4 0.06% 345
4 0.06% 344
4 0.06% 373
4 0.06% 343
4 0.06% 190
4 0.06% 125
4 0.06% 340
4 0.06% 245
4 0.06% 247
4 0.06% 349
4 0.06% 127
4 0.06% 336
4 0.06% 266
4 0.06% 269
4 0.06% 143
4 0.06% 145
4 0.06% 164
4 0.06% 276
3 0.04% 335
3 0.04% 129
3 0.04% 329
3 0.04% 152
3 0.04% 148
3 0.04% 155
3 0.04% 417
3 0.04% 346
3 0.04% 251
3 0.04% 257
3 0.04% 382
3 0.04% 260
3 0.04% 170
3 0.04% 169
3 0.04% 167
3 0.04% 392
3 0.04% 376
3 0.04% 476
3 0.04% 275
3 0.04% 277
3 0.04% 281
3 0.04% 375
3 0.04% 163
3 0.04% 287
3 0.04% 290
3 0.04% 426
3 0.04% 372
3 0.04% 297
3 0.04% 355
3 0.04% 303
3 0.04% 371
2 0.03% 374
2 0.03% 379
2 0.03% 406
2 0.03% 399
2 0.03% 386
2 0.03% 405
2 0.03% 488
2 0.03% 369
2 0.03% 510
2 0.03% 362
2 0.03% 477
2 0.03% 400
2 0.03% 397
2 0.03% 354
2 0.03% 528
2 0.03% 259
2 0.03% 423
2 0.03% 206
2 0.03% 203
2 0.03% 427
2 0.03% 462
2 0.03% 192
2 0.03% 624
2 0.03% 188
2 0.03% 186
2 0.03% 185
2 0.03% 183
2 0.03% 181
2 0.03% 458
2 0.03% 436
2 0.03% 175
2 0.03% 174
2 0.03% 440
2 0.03% 165
2 0.03% 161
2 0.03% 159
2 0.03% 307
2 0.03% 305
2 0.03% 418
2 0.03% 331
2 0.03% 301
2 0.03% 339
2 0.03% 294
2 0.03% 416
2 0.03% 421
2 0.03% 422
2 0.03% 283
2 0.03% 279
2 0.03% 273
2 0.03% 271
2 0.03% 267
2 0.03% 265
2 0.03% 261
104 1.54% in 104 undisplayed elements
--------- ------- ----------
6735 100.00% 365 elements
Average value: 191.79
--
Abu Saad Papa
http://research.iiit.net/~abu_saad/
M.S VLSI
IIIT, Hyderabad.
"GOD GIVES MAN GETS ........
GOD FORGIVES MAN FORGETS...."
