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Concept
Volta (microarchitecture)
Summary
Volta is the codename, but not the trademark, for a GPU microarchitecture developed by Nvidia, succeeding Pascal. It was first announced on a roadmap in March 2013, although the first product was not announced until May 2017. The architecture is named after 18th–19th century Italian chemist and physicist Alessandro Volta. It was NVIDIA's first chip to feature Tensor Cores, specially designed cores that have superior deep learning performance over regular CUDA cores. The architecture is produced with TSMC's 12 nm FinFET process. The Ampere microarchitecture is the successor to Volta.
The first graphics card to use it was the datacenter Tesla V100, e.g. as part of the Nvidia DGX-1 system. It has also been used in the Quadro GV100 and Titan V. There were no mainstream GeForce graphics cards based on Volta.
After two USPTO proceedings, on Jul. 03, 2023 NVIDIA lost the Volta trademark application in the field of artificial intelligence. The Volta trademark owner remains Volta Robots, a company specialized in AI and vision algorithms for robots and unmanned vehicles.
Architectural improvements of the Volta architecture include the following:
CUDA Compute Capability 7.0
concurrent execution of integer and floating point operations
TSMC's 12 nm FinFET process, allowing 21.1 billion transistors.
High Bandwidth Memory 2 (HBM2),
NVLink 2.0: a high-bandwidth bus between the CPU and GPU, and between multiple GPUs. Allows much higher transfer speeds than those achievable by using PCI Express; estimated to provide 25 Gbit/s per lane. (Disabled for Titan V)
Tensor cores: A tensor core is a unit that multiplies two 4×4 FP16 matrices, and then adds a third FP16 or FP32 matrix to the result by using fused multiply–add operations, and obtains an FP32 result that could be optionally demoted to an FP16 result. Tensor cores are intended to speed up the training of neural networks. Volta's Tensor cores are first generation while Ampere has third generation Tensor cores.
Official source
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