Question 13

A. Algorithm bandwidth - effective bandwidth for the operation

In NCCL test output, the field labeled `algBW` is the standard abbreviation for the collective algorithm’s measured throughput, i.e., the effective bandwidth achieved by the operation rather than the underlying physical link rate. The metric is reported by NCCL benchmarks to summarize how much data the algorithm actually moves per unit time during the test, so the correct interpretation is algorithm bandwidth.