configs/common/GPUTLBOptions.py

# Copyright (c) 2011-2015 Advanced Micro Devices, Inc.
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def tlb_options(parser):

    # ===================================================================
    # TLB Configuration
    # ===================================================================

    parser.add_argument(
        "--TLB-config",
        type=str,
        default="perCU",
        help="Options are: perCU (default), mono, 2CU, or perLane",
    )

    # ===================================================================
    #   L1 TLB Options (D-TLB, I-TLB, Dispatcher-TLB)
    # ===================================================================

    parser.add_argument("--L1TLBentries", type=int, default="32")
    parser.add_argument("--L1TLBassoc", type=int, default="32")
    parser.add_argument(
        "--L1AccessLatency",
        type=int,
        default="1",
        help="latency in gpu cycles",
    )
    parser.add_argument(
        "--L1MissLatency",
        type=int,
        default="750",
        help="latency (in gpu cycles) of a page walk, "
        "if this is a last level TLB",
    )
    parser.add_argument("--L1MaxOutstandingReqs", type=int, default="64")
    parser.add_argument("--L1AccessDistanceStat", action="store_true")
    parser.add_argument("--tot-L1TLB-size", type=int, default="0")

    # ===================================================================
    #   L2 TLB Options
    # ===================================================================

    parser.add_argument("--L2TLBentries", type=int, default="4096")
    parser.add_argument("--L2TLBassoc", type=int, default="32")
    parser.add_argument(
        "--L2AccessLatency",
        type=int,
        default="69",
        help="latency in gpu cycles",
    )
    parser.add_argument(
        "--L2MissLatency",
        type=int,
        default="750",
        help="latency (in gpu cycles) of a page walk, "
        "if this is a last level TLB",
    )
    parser.add_argument("--L2MaxOutstandingReqs", type=int, default="64")
    parser.add_argument("--L2AccessDistanceStat", action="store_true")

    # ===================================================================
    #   L3 TLB Options
    # ===================================================================

    parser.add_argument("--L3TLBentries", type=int, default="8192")
    parser.add_argument("--L3TLBassoc", type=int, default="32")
    parser.add_argument(
        "--L3AccessLatency",
        type=int,
        default="150",
        help="latency in gpu cycles",
    )
    parser.add_argument(
        "--L3MissLatency",
        type=int,
        default="750",
        help="latency (in gpu cycles) of a page walk",
    )
    parser.add_argument("--L3MaxOutstandingReqs", type=int, default="64")
    parser.add_argument("--L3AccessDistanceStat", action="store_true")

    # ===================================================================
    #   L1 TLBCoalescer Options
    # ===================================================================

    parser.add_argument("--L1ProbesPerCycle", type=int, default="2")
    parser.add_argument("--L1CoalescingWindow", type=int, default="1")
    parser.add_argument("--L1DisableCoalescing", action="store_true")

    # ===================================================================
    #   L2 TLBCoalescer Options
    # ===================================================================

    parser.add_argument("--L2ProbesPerCycle", type=int, default="2")
    parser.add_argument("--L2CoalescingWindow", type=int, default="1")
    parser.add_argument("--L2DisableCoalescing", action="store_true")

    # ===================================================================
    #   L3 TLBCoalescer Options
    # ===================================================================

    parser.add_argument("--L3ProbesPerCycle", type=int, default="2")
    parser.add_argument("--L3CoalescingWindow", type=int, default="1")
    parser.add_argument("--L3DisableCoalescing", action="store_true")