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Cedar: Difference between revisions
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Cedar's network topology is made up of "islands" with a 2:1 blocking factor between islands. Within an island the interconnect (Omni-Path fabric) is fully non-blocking. | Cedar's network topology is made up of "islands" with a 2:1 blocking factor between islands. Within an island the interconnect (Omni-Path fabric) is fully non-blocking. | ||
Most islands contain 32 nodes: | Most islands contain 32 nodes: | ||
* 18 islands with 32 Broadwell nodes, each with 32 cores, i.e., 1024 cores per island; | * 18 islands with 32 Broadwell nodes, each with 32 cores, i.e., 1024 cores per island; | ||
* 44 islands with 32 Skylake | * 44 islands with 32 Skylake or Cascade Lake nodes, each with 48 cores, i.e., 1536 cores per island; | ||
* 4 islands with 32 P100 GPU nodes; | * 4 islands with 32 P100 GPU nodes; | ||
* 6 islands with 32 V100 GPU nodes; | * 6 islands with 32 V100 GPU nodes; | ||