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===== Enforcing Core Counts ===== | ===== Enforcing Core Counts ===== | ||
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- | **This page applies only to the new cluster.** | ||
Running cluster jobs have access to exactly as many cores as requested in the job submission. If you submit a job requesting 1 core, and start a program that uses 10 threads, all 10 threads will be time-sliced on that 1 core. Your job might run something like 10 times slower than you expected it to! | Running cluster jobs have access to exactly as many cores as requested in the job submission. If you submit a job requesting 1 core, and start a program that uses 10 threads, all 10 threads will be time-sliced on that 1 core. Your job might run something like 10 times slower than you expected it to! |