ampere microarchitecture

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    Ampere is the codename for a graphics processing unit (GPU) microarchitecture developed by Nvidia as the successor to both the Volta and Turing architectures. It was officially announced on May 14, 2020, and is named after French mathematician and physicist André-Marie Ampère.
    Nvidia announced the Ampere architecture GeForce 30 series consumer GPUs at a GeForce Special Event on September 1, 2020. Nvidia announced the A100 80 GB GPU at SC20 on November 16, 2020. Mobile RTX graphics cards and the RTX 3060 based on the Ampere architecture were revealed on January 12, 2021.
    Nvidia announced Ampere's successor, Hopper, at GTC 2022, and "Ampere Next Next" (Blackwell) for a 2024 release at GPU Technology Conference 2021.


    Details


    Architectural improvements of the Ampere architecture include the following:

    CUDA Compute Capability 8.0 for A100 and 8.6 for the GeForce 30 series
    TSMC's 7 nm FinFET process for A100
    Custom version of Samsung's 8 nm process (8N) for the GeForce 30 series
    Third-generation Tensor Cores with FP16, bfloat16, TensorFloat-32 (TF32) and FP64 support and sparsity acceleration. The individual Tensor cores have with 256 FP16 FMA operations per clock 4x processing power (GA100 only, 2x on GA10x) compared to previous Tensor Core generations; the Tensor Core Count is reduced to one per SM.
    Second-generation ray tracing cores; concurrent ray tracing, shading, and compute for the GeForce 30 series
    High Bandwidth Memory 2 (HBM2) on A100 40 GB & A100 80 GB
    GDDR6X memory for GeForce RTX 3090, RTX 3080 Ti, RTX 3080, RTX 3070 Ti
    Double FP32 cores per SM on GA10x GPUs
    NVLink 3.0 with a 50 Gbit/s per pair throughput
    PCI Express 4.0 with SR-IOV support (SR-IOV is reserved only for A100)
    Multi-instance GPU (MIG) virtualization and GPU partitioning feature in A100 supporting up to seven instances
    PureVideo feature set K hardware video decoding with AV1 hardware decoding for the GeForce 30 series and feature set J for A100
    5 NVDEC for A100
    Adds new hardware-based 5-core JPEG decode (NVJPG) with YUV420, YUV422, YUV444, YUV400, RGBA. Should not be confused with Nvidia NVJPEG (GPU-accelerated library for JPEG encoding/decoding)


    = Chips

    =
    GA100
    GA102
    GA103
    GA104
    GA106
    GA107
    GA10B
    Comparison of Compute Capability: GP100 vs GV100 vs GA100

    Comparison of Precision Support Matrix

    Legend:

    FPnn: floating point with nn bits
    INTn: integer with n bits
    INT1: binary
    TF32: TensorFloat32
    BF16: bfloat16
    Comparison of Decode Performance


    Ampere dies




    A100 accelerator and DGX A100


    The Ampere-based A100 accelerator was announced and released on May 14, 2020. The A100 features 19.5 teraflops of FP32 performance, 6912 FP32/INT32 CUDA cores, 3456 FP64 CUDA cores, 40 GB of graphics memory, and 1.6 TB/s of graphics memory bandwidth. The A100 accelerator was initially available only in the 3rd generation of DGX server, including 8 A100s. Also included in the DGX A100 is 15 TB of PCIe gen 4 NVMe storage, two 64-core AMD Rome 7742 CPUs, 1 TB of RAM, and Mellanox-powered HDR InfiniBand interconnect. The initial price for the DGX A100 was $199,000.
    Comparison of accelerators used in DGX:


    Products using Ampere


    GeForce MX series
    GeForce MX570 (mobile) (GA107)
    GeForce 20 series
    GeForce RTX 2050 (mobile) (GA107)
    GeForce 30 series
    GeForce RTX 3050 Laptop GPU (GA107)
    GeForce RTX 3050 (GA106 or GA107)
    GeForce RTX 3050 Ti Laptop GPU (GA107)
    GeForce RTX 3060 Laptop GPU (GA106)
    GeForce RTX 3060 (GA106 or GA104)
    GeForce RTX 3060 Ti (GA104 or GA103)
    GeForce RTX 3070 Laptop GPU (GA104)
    GeForce RTX 3070 (GA104)
    GeForce RTX 3070 Ti Laptop GPU (GA104)
    GeForce RTX 3070 Ti (GA104 or GA102)
    GeForce RTX 3080 Laptop GPU (GA104)
    GeForce RTX 3080 (GA102)
    GeForce RTX 3080 12 GB (GA102)
    GeForce RTX 3080 Ti Laptop GPU (GA103)
    GeForce RTX 3080 Ti (GA102)
    GeForce RTX 3090 (GA102)
    GeForce RTX 3090 Ti (GA102)
    Nvidia Workstation GPUs (formerly Quadro)
    RTX A1000 (mobile) (GA107)
    RTX A2000 (mobile) (GA106)
    RTX A2000 (GA106)
    RTX A3000 (mobile) (GA104)
    RTX A4000 (mobile) (GA104)
    RTX A4000 (GA104)
    RTX A5000 (mobile) (GA104)
    RTX A5500 (mobile) (GA103)
    RTX A4500 (GA102)
    RTX A5000 (GA102)
    RTX A5500 (GA102)
    RTX A6000 (GA102)
    A800 Active
    Nvidia Data Center GPUs (formerly Tesla)
    Nvidia A2 (GA107)
    Nvidia A10 (GA102)
    Nvidia A16 (4 × GA107)
    Nvidia A30 (GA100)
    Nvidia A40 (GA102)
    Nvidia A100 (GA100)
    Nvidia A100 80 GB (GA100)
    Nvidia A100X
    NVIDIA A30X
    Tegra SoCs
    AGX Orin (GA10B)
    Orin NX (GA10B)
    Orin Nano (GA10B)


    See also


    List of eponyms of Nvidia GPU microarchitectures
    List of Nvidia graphics processing units
    Nvidia NVENC
    Nvidia NVDEC


    References




    External links


    Nvidia A100 Tensor Core GPU Architecture whitepaper
    Nvidia Ampere GA102 GPU Architecture whitepaper
    Nvidia Ampere Architecture
    Nvidia A100 Tensor Core GPU
    Nvidia Ampere Architecture In-Depth

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ampere microarchitecture