Tools/likwid/example_topology_Ice_Lake
Example
likwid-topology
on Intel Xeon Ice Lake
likwid-topology -g
--------------------------------------------------------------------------------
CPU name: Intel(R) Xeon(R) Platinum 8368 CPU @ 2.40GHz
CPU type: Intel Icelake SP processor
CPU stepping: 6
********************************************************************************
Hardware Thread Topology
********************************************************************************
Sockets: 2
Cores per socket: 38
Threads per core: 2
--------------------------------------------------------------------------------
HWThread Thread Core Die Socket Available
0 0 0 0 0 *
1 0 1 0 0 *
2 0 2 0 0 *
...
151 1 75 0 1 *
--------------------------------------------------------------------------------
Socket 0: ( 0 76 1 77 2 78 3 79 4 80 5 81 6 82 7 83 8 84 9 85 10 86 11 87 12 88 13 89 14 90 15 91 16 92 17 93 18 94 19 95 20 96 21 97 22 98 23 99 24 100 25 101 26 102 27 103 28 104 29 105 30 106 31 107 32 108 33 109 34 110 35 111 36 112 37 113 )
Socket 1: ( 38 114 39 115 40 116 41 117 42 118 43 119 44 120 45 121 46 122 47 123 48 124 49 125 50 126 51 127 52 128 53 129 54 130 55 131 56 132 57 133 58 134 59 135 60 136 61 137 62 138 63 139 64 140 65 141 66 142 67 143 68 144 69 145 70 146 71 147 72 148 73 149 74 150 75 151 )
--------------------------------------------------------------------------------
********************************************************************************
Cache Topology
********************************************************************************
Level: 1
Size: 48 kB
Cache groups: ( 0 76 ) ( 1 77 ) ( 2 78 ) ( 3 79 ) ( 4 80 ) ( 5 81 ) ( 6 82 ) ( 7 83 ) ( 8 84 ) ( 9 85 ) ( 10 86 ) ( 11 87 ) ( 12 88 ) ( 13 89 ) ( 14 90 ) ( 15 91 ) ( 16 92 ) ( 17 93 ) ( 18 94 ) ( 19 95 ) ( 20 96 ) ( 21 97 ) ( 22 98 ) ( 23 99 ) ( 24 100 ) ( 25 101 ) ( 26 102 ) ( 27 103 ) ( 28 104 ) ( 29 105 ) ( 30 106 ) ( 31 107 ) ( 32 108 ) ( 33 109 ) ( 34 110 ) ( 35 111 ) ( 36 112 ) ( 37 113 ) ( 38 114 ) ( 39 115 ) ( 40 116 ) ( 41 117 ) ( 42 118 ) ( 43 119 ) ( 44 120 ) ( 45 121 ) ( 46 122 ) ( 47 123 ) ( 48 124 ) ( 49 125 ) ( 50 126 ) ( 51 127 ) ( 52 128 ) ( 53 129 ) ( 54 130 ) ( 55 131 ) ( 56 132 ) ( 57 133 ) ( 58 134 ) ( 59 135 ) ( 60 136 ) ( 61 137 ) ( 62 138 ) ( 63 139 ) ( 64 140 ) ( 65 141 ) ( 66 142 ) ( 67 143 ) ( 68 144 ) ( 69 145 ) ( 70 146 ) ( 71 147 ) ( 72 148 ) ( 73 149 ) ( 74 150 ) ( 75 151 )
--------------------------------------------------------------------------------
Level: 2
Size: 1.25 MB
Cache groups: ( 0 76 ) ( 1 77 ) ( 2 78 ) ( 3 79 ) ( 4 80 ) ( 5 81 ) ( 6 82 ) ( 7 83 ) ( 8 84 ) ( 9 85 ) ( 10 86 ) ( 11 87 ) ( 12 88 ) ( 13 89 ) ( 14 90 ) ( 15 91 ) ( 16 92 ) ( 17 93 ) ( 18 94 ) ( 19 95 ) ( 20 96 ) ( 21 97 ) ( 22 98 ) ( 23 99 ) ( 24 100 ) ( 25 101 ) ( 26 102 ) ( 27 103 ) ( 28 104 ) ( 29 105 ) ( 30 106 ) ( 31 107 ) ( 32 108 ) ( 33 109 ) ( 34 110 ) ( 35 111 ) ( 36 112 ) ( 37 113 ) ( 38 114 ) ( 39 115 ) ( 40 116 ) ( 41 117 ) ( 42 118 ) ( 43 119 ) ( 44 120 ) ( 45 121 ) ( 46 122 ) ( 47 123 ) ( 48 124 ) ( 49 125 ) ( 50 126 ) ( 51 127 ) ( 52 128 ) ( 53 129 ) ( 54 130 ) ( 55 131 ) ( 56 132 ) ( 57 133 ) ( 58 134 ) ( 59 135 ) ( 60 136 ) ( 61 137 ) ( 62 138 ) ( 63 139 ) ( 64 140 ) ( 65 141 ) ( 66 142 ) ( 67 143 ) ( 68 144 ) ( 69 145 ) ( 70 146 ) ( 71 147 ) ( 72 148 ) ( 73 149 ) ( 74 150 ) ( 75 151 )
--------------------------------------------------------------------------------
Level: 3
Size: 57 MB
Cache groups: ( 0 76 1 77 2 78 3 79 4 80 5 81 6 82 7 83 8 84 9 85 10 86 11 87 12 88 13 89 14 90 15 91 16 92 17 93 18 94 19 95 20 96 21 97 22 98 23 99 24 100 25 101 26 102 27 103 28 104 29 105 30 106 31 107 32 108 33 109 34 110 35 111 36 112 37 113 ) ( 38 114 39 115 40 116 41 117 42 118 43 119 44 120 45 121 46 122 47 123 48 124 49 125 50 126 51 127 52 128 53 129 54 130 55 131 56 132 57 133 58 134 59 135 60 136 61 137 62 138 63 139 64 140 65 141 66 142 67 143 68 144 69 145 70 146 71 147 72 148 73 149 74 150 75 151 )
--------------------------------------------------------------------------------
********************************************************************************
NUMA Topology
********************************************************************************
NUMA domains: 2
--------------------------------------------------------------------------------
Domain: 0
Processors: ( 0 76 1 77 2 78 3 79 4 80 5 81 6 82 7 83 8 84 9 85 10 86 11 87 12 88 13 89 14 90 15 91 16 92 17 93 18 94 19 95 20 96 21 97 22 98 23 99 24 100 25 101 26 102 27 103 28 104 29 105 30 106 31 107 32 108 33 109 34 110 35 111 36 112 37 113 )
Distances: 10 20
Free memory: 241855 MB
Total memory: 256560 MB
--------------------------------------------------------------------------------
Domain: 1
Processors: ( 38 114 39 115 40 116 41 117 42 118 43 119 44 120 45 121 46 122 47 123 48 124 49 125 50 126 51 127 52 128 53 129 54 130 55 131 56 132 57 133 58 134 59 135 60 136 61 137 62 138 63 139 64 140 65 141 66 142 67 143 68 144 69 145 70 146 71 147 72 148 73 149 74 150 75 151 )
Distances: 20 10
Free memory: 244937 MB
Total memory: 258029 MB
--------------------------------------------------------------------------------
********************************************************************************
Graphical Topology
********************************************************************************
Socket 0:
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| | 0 76 | | 1 77 | | 2 78 | | 3 79 | | 4 80 | | 5 81 | | 6 82 | | 7 83 | | 8 84 | | 9 85 | | 10 86 | | 11 87 | | 12 88 | | 13 89 | | 14 90 | | 15 91 | | 16 92 | | 17 93 | | 18 94 | | 19 95 | | 20 96 | | 21 97 | | 22 98 | | 23 99 | | 24 100 | | 25 101 | | 26 102 | | 27 103 | | 28 104 | | 29 105 | | 30 106 | | 31 107 | | 32 108 | | 33 109 | | 34 110 | | 35 111 | | 36 112 | | 37 113 | |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |
| | 57 MB | |
| +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Socket 1:
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| | 38 114 | | 39 115 | | 40 116 | | 41 117 | | 42 118 | | 43 119 | | 44 120 | | 45 121 | | 46 122 | | 47 123 | | 48 124 | | 49 125 | | 50 126 | | 51 127 | | 52 128 | | 53 129 | | 54 130 | | 55 131 | | 56 132 | | 57 133 | | 58 134 | | 59 135 | | 60 136 | | 61 137 | | 62 138 | | 63 139 | | 64 140 | | 65 141 | | 66 142 | | 67 143 | | 68 144 | | 69 145 | | 70 146 | | 71 147 | | 72 148 | | 73 149 | | 74 150 | | 75 151 | |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | | 48 kB | |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | | 1 MB | |
| +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ +---------+ |
| +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |
| | 57 MB | |
| +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Graphical representation of cache groups
3 levels of cache
2 sockets, 2 NUMA domains
numactl -H
available: 2 nodes (0-1) node 0 cpus: 0 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 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 node 0 size: 256560 MB node 0 free: 241855 MB node 1 cpus: 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 75 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 node 1 size: 258029 MB node 1 free: 244952 MB node distances: node 0 1 0: 10 20 1: 20 10