fix allreduce latency and memory usage calculation when using tp #28
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What does this PR do?
This PR makes the following changes:
get_memory_optimizer_state_and_gradient_per_layer, updatingmemory_optimizer_state_others_per_layergiven layernorm is not sharded across the tensor parallel processes.get_latency_fwd_per_tp_comm, usingget_intra_node_bandwidthwhich is adjusted byintra_node_memory_efficiencyin allreduce latency calculation.What issue(s) does this change relate to?
Related to #27