bench_cluster/communication/all_gather.py [50:69]:
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    start_event = torch.cuda.Event(enable_timing=True)
    end_event = torch.cuda.Event(enable_timing=True)

    if scan:
        # Create list of message sizes
        M_LIST = []
        for x in (2**p for p in range(1, maxsize)):
            M_LIST.append(x)

        sync_all()
        # loop over various tensor sizes
        for M in M_LIST:
            global_rank = dist.get_rank()
            try:
                mat = torch.ones(world_size, M, dtype=getattr(torch, dtype)).cuda(local_rank)
                sync_all()
                input = ((mat.mul_(float(global_rank))).view(-1))
                # Delete original mat to avoid OOM
                del mat
                torch.cuda.empty_cache()
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bench_cluster/communication/all_reduce.py [44:61]:
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    start_event = torch.cuda.Event(enable_timing=True)
    end_event = torch.cuda.Event(enable_timing=True)

    if scan:
        M_LIST = []
        for x in (2**p for p in range(1, maxsize)):
            M_LIST.append(x)

        sync_all()
        # loop over various tensor sizes
        for M in M_LIST:
            global_rank = dist.get_rank()
            try:
                mat = torch.ones(world_size, M, dtype=getattr(torch, dtype)).cuda(local_rank)
                sync_all()
                input = ((mat.mul_(float(global_rank))).view(-1))
                del mat
                torch.cuda.empty_cache()
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