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Cedar: Difference between revisions
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Theoretical peak double precision performance of Cedar is 6547 teraflops for CPUs, plus 7434 for GPUs, yielding almost 14 petaflops of theoretical peak double precision performance. | Theoretical peak double precision performance of Cedar is 6547 teraflops for CPUs, plus 7434 for GPUs, yielding almost 14 petaflops of theoretical peak double precision performance. | ||
Cedar's network topology is made up of "islands". Most islands contain 32 nodes: there are 18 islands with 32 Broadwell nodes, each with 32 cores (i.e., 1024 cores per island), 44 islands with 32 Skylake and Cascade Lake nodes, each with 48 cores (i.e., 1536 cores per island), 4 islands with 32 P100 GPU nodes and 6 islands with 32 V100 GPU nodes. There are also 2 islands with | Cedar's network topology is made up of "islands". Most islands contain 32 nodes: there are 18 islands with 32 Broadwell nodes, each with 32 cores (i.e., 1024 cores per island), 44 islands with 32 Skylake and Cascade Lake nodes, each with 48 cores (i.e., 1536 cores per island), 4 islands with 32 P100 GPU nodes and 6 islands with 32 V100 GPU nodes. There are also 2 islands with 24 large memory Broadwell nodes each. Nodes within an island are connected in a fully non-blocking topology (Omni-Path fabric). There is a 2:1 blocking factor between islands. | ||
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