NVIDIA 16nm Pascal Based Tesla P100 With GP100 GPU Unveiled – Worlds First GPU With HBM2 and 10.6 TFLOPs of Compute On A Single Chip
NVIDIA has officially unveiled the Pascal based Tesla P100 GPU which is their fastest GPU to date. The Pascal GP100 chip is NVIDIA’s first GPU to be based on the latest 16nm FinFET process node which delivers 65 percent higher speed, around 2 times the transistor density increase and 70 percent less power than its 28HPM tech. The new FinFET process allows NVIDIA to gain up to 2 times the performance per watt improvement on Pascal compared to the Maxwell GPUs.
NVIDIA Pascal Tesla P100 Unveiled – 15.3 Billion Transistors on a 610mm2 16nm Die – 16 GB HBM2 Memory With Insane Compute
The NVIDIA Pascal Tesla P100 GPU revives the double precision compute technology on NVIDIA chips which was not featured on the Maxwell generation of cards. The Maxwell generation brought NVIDIA in the most competitive position with a lineup filled with amazing graphics card that won not only in performance per watt but also the performance to value segments. NVIDIA has developed a large ecosystem around their Maxwell cards which is now represented by the GeForce brand.
With Pascal, NVIDIA will not only be aiming at the GeForce brand but also the high-performance Tesla market. The Tesla market is the action filled lineup where the big chips are aimed at. NVIDIA has received huge demand of next-generation chips in this market and they have prepped a range of next-gen chips specifically for the HPC market.
The GP100 GPU used in Tesla P100 incorporates multiple revolutionary new features and unprecedented performance. Key features of Tesla P100 include:
- Extreme performance—powering HPC, deep learning, and many more GPU Computing areas;
- NVLink—NVIDIA’s new high speed, high bandwidth interconnect for maximum application scalability;
- HBM2—Fastest, high capacity, extremely efficient stacked GPU memory architecture;
- Unified Memory and Compute Preemption—significantly improved programming model;
- 16nm FinFET—enables more features, higher performance, and improved power efficiency.
The current 28nm products have existed in the Tesla market since early 2012. This was the time when NVIDIA had started shipping the GK110 GPUs to built the Titan Supercomputer. The Tesla K20X was used to power the fastest supercomputer in the world at that time. When Maxwell came in the market, NVIDIA still had the bulk Kepler parts that were being sold for their high double precision compute, something that was amiss on Tesla Maxwell cards. While NVIDIA did launch Maxwell based Tesla cards later in the lineup which were aimed at the Cloud / Virtulization sectors, the top brass of NVIDIA’s FP64 crunching Tesla cards are arriving again with the new Tesla Pascal graphics cards.
Pascal GPU Roadmap Slides From GTC 2015 Showcasing The Architecture Updates on The Latest GPU.
The new Pascal GP100 GPU that is aimed at the Tesla market first features three key technologies, NVLINK, FP16 and HBM2. Those go along well with the architectural improvements in NVIDIA’s latest CUDA architecture.
NVIDIA Pascal GP100 With 10.6 TFLOPs Single and 5.3 TFLOPs Dual Precision Compute On A Single Graphics Card
NVIDIA Pascal GP100 GPU Architecture – The Building Blocks of NVIDIA’s HPC Accelerator Chip – 3840 CUDA Cores, Preemption and Return of Double Precision With a Bang
Like previous Tesla GPUs, GP100 is composed of an array of Graphics Processing Clusters (GPCs), Streaming Multiprocessors (SMs), and memory controllers. GP100 achieves its colossal throughput by providing six GPCs, up to 60 SMs, and eight 512-bit memory controllers (4096 bits total). The Pascal architecture’s computational prowess is more than just brute force: it increases performance not only by adding more SMs than previous GPUs, but by making each SM more efficient. Each SM has 64 CUDA cores and four texture units, for a total of 3840 CUDA cores and 240 texture units.
Pascal GP100 Has Insane Clock Speeds – Near 1.5 GHz Boost Clocks
The Pascal GP100 comes with insane clock speeds of 1328 MHz core and 1480 MHz boost clock which is an insane leap and shows how the clock speed will scale even higher with the smaller chips so we can expect to see around 1500 MHz+ Pascal GPUs on the consumer market.
GP100’s SM incorporates 64 single-precision (FP32) CUDA Cores. In contrast, the Maxwell and Kepler SMs had 128 and 192 FP32 CUDA Cores, respectively. The GP100 SM is partitioned into two processing blocks, each having 32 single-precision CUDA Cores, an instruction buffer, a warp scheduler, and two dispatch units. While a GP100 SM has half the total number of CUDA Cores of a Maxwell SM, it maintains the same register file size and supports similar occupancy of warps and thread blocks.
NVIDIA Volta Tesla V100 Specs:
|NVIDIA Tesla Graphics Card||Tesla K40|
|Tesla P100 (Mezzanine)||Tesla V100 (Mezzanine)|
|GPU||GK110 (Kepler)||GM200 (Maxwell)||GP100 (Pascal)||GP100 (Pascal)||GP100 (Pascal)||GV100 (Volta)|
|Transistors||7.1 Billion||8 Billion||15.3 Billion||15.3 Billion||15.3 Billion||21.1 Billion|
|GPU Die Size||551 mm2||601 mm2||610 mm2||610 mm2||610 mm2||815mm2|
|CUDA Cores Per SM||192||128||64||64||64||64|
|CUDA Cores (Total)||2880||3072||3584||3584||3584||5120|
|FP64 CUDA Cores / SM||64||4||32||32||32||32|
|FP64 CUDA Cores / GPU||960||96||1792||1792||1792||2560|
|Base Clock||745 MHz||948 MHz||TBD||TBD||1328 MHz||1370 MHz|
|Boost Clock||875 MHz||1114 MHz||1300MHz||1300MHz||1480 MHz||1455 MHz|
|FP32 Compute||5.04 TFLOPs||6.8 TFLOPs||~10.0 TFLOPs||~10.0 TFLOPs||10.6 TFLOPs||15.0 TFLOPs|
|FP64 Compute||1.68 TFLOPs||0.2 TFLOPs||4.7 TFLOPs||4.7 TFLOPs||5.30 TFLOPs||7.50 TFLOPs|
|Memory Interface||384-bit GDDR5||384-bit GDDR5||4096-bit HBM2||4096-bit HBM2||4096-bit HBM2||4096-bit HBM2|
|Memory Size||12 GB GDDR5||24 GB GDDR5||12 GB HBM2||16 GB HBM2||16 GB HBM2||16 GB HBM2|
|L2 Cache Size||1536 KB||3072 KB||4096 KB||4096 KB||4096 KB||6144 KB|
GP100’s SM has the same number of registers as Maxwell GM200 and Kepler GK110 SMs, but the entire GP100 GPU has far more SMs, and thus many more registers overall. This means threads across the GPU have access to more registers, and GP100 supports more threads, warps, and thread blocks in flight compared to prior GPU generations.
Overall shared memory across the GP100 GPU is also increased due to the increased SM count, and aggregate shared memory bandwidth is effectively more than doubled. A higher ratio of shared memory, registers, and warps per SM in GP100 allows the SM to more efficiently execute code. There are more warps for the instruction scheduler to choose from, more loads to initiate, and more per-thread bandwidth to shared memory (per thread).
On compute side, Pascal is going to take the next incremental step with double precision performance rated over 5.3 TFLOPs, which is more than double of what’s offered on the last generation FP64 enabled GPUs. As for single precision performance, we will see the Pascal GPUs breaking past the 10 TFLOPs barrier with ease. The chip comes with 4 MB of L2 cache. The GPU is in volume production and will be arriving to HPC markets very soon. On the mixed precision market, the Tesla P100 can achieve a maximum of 21 TFLOPs of FP16 compute performance which can process workloads at twice the compute precision of FP32.
Because of the importance of high-precision computation for technical computing and HPC codes, a key design goal for Tesla P100 is high double-precision performance. Each GP100 SM has 32 FP64 units, providing a 2:1 ratio of single- to double-precision throughput. Compared to the 3:1 ratio in Kepler GK110 GPUs, this allows Tesla P100 to process FP64 workloads more efficiently.
NVIDIA Pascal is Built on TSMC’s 16nm FinFET Process Node
The chip is based on the 16nm FinFET process which leads to efficiency improvements and better performance per watt but with Pascal, double precision compute returns with a bang. Maxwell which is NVIDIA’s current gen architecture made some serious gains in the performance per watt department and Pascal is expected to keep the tradition move forward.
TSMC’s 16FF+ (FinFET Plus) technology can provide above 65 percent higher speed, around 2 times the density, or 70 percent less power than its 28HPM technology. Comparing with 20SoC technology, 16FF+ provides extra 40% higher speed and 60% power saving. By leveraging the experience of 20SoC technology, TSMC 16FF+ shares the same metal backend process in order to quickly improve yield and demonstrate process maturity for time-to-market value. via TSMC
|GPU Architecture||NVIDIA Fermi||NVIDIA Kepler||NVIDIA Maxwell||NVIDIA Pascal|
|GPU Process||40nm||28nm||28nm||16nm (TSMC FinFET)|
|GPU Design||SM (Streaming Multiprocessor)||SMX (Streaming Multiprocessor)||SMM (Streaming Multiprocessor Maxwell)||SMP (Streaming Multiprocessor Pascal)|
|Maximum Transistors||3.00 Billion||7.08 Billion||8.00 Billion||15.3 Billion|
|Maximum Die Size||520mm2||561mm2||601mm2||610mm2|
|Stream Processors Per Compute Unit||32 SPs||192 SPs||128 SPs||64 SPs|
|Maximum CUDA Cores||512 CCs (16 CUs)||2880 CCs (15 CUs)||3072 CCs (24 CUs)||3840 CCs (60 CUs)|
|FP32 Compute||1.33 TFLOPs(Tesla)||5.10 TFLOPs (Tesla)||6.10 TFLOPs (Tesla)||~12 TFLOPs (Tesla)|
|FP64 Compute||0.66 TFLOPs (Tesla)||1.43 TFLOPs (Tesla)||0.20 TFLOPs (Tesla)||~6 TFLOPs(Tesla)|
|Maximum VRAM||1.5 GB GDDR5||6 GB GDDR5||12 GB GDDR5||16 / 32 GB HBM2|
|Maximum Bandwidth||192 GB/s||336 GB/s||336 GB/s||720 GB/s - 1 TB/s|
|Launch Year||2010 (GTX 580)||2014 (GTX Titan Black)||2015 (GTX Titan X)||2016|
NVIDIA Pascal GP100 Is The First Single Chip GPU With HBM2 To Achieve 1 TB/s Bandwidth
Under the Tesla brand, NVIDIA will be introducing a range of HPC cards based on their GP100 GPU core which utilizes the Pascal architecture and delivers a behemoth 5.3 TFLOPs of double precision compute along with 16 GB of HBM2 VRAM clocked at 2 Gbps to deliver 1 TB/s bandwidth. This makes Pascal GP100 the first single GPU to achieve the 1 TB/s bandwidth which is an insane feat in itself. Not only is that insane, but GP100 is also the first graphics card in the world to feature the next-gen memory standard, HBM2 from Samsung.
The HBM2 VRAM has a lot of advantages in the graphics sector. Not only is it faster but it’s also scalable down and up to several different SKUs. The HBM2 VRAM has a much higher bus than GDDR5 memory, it comes with up to 1 TB/s bandwidth and less but not least, it allows HPC class graphics cards to feature up to 16 GB of VRAM which is crazy.
The next generation of NVIDIA Tesla GPUs which will be shipping to HPC users this year are already equipped and ready with HBM2 VRAM. NVIDIA is the first graphics card company to feature HBM2 on their GPUs with competition a whole year away from launching their HBM2 powered chips.
NVIDIA GP100 is a 12 TFLOPs GPU, Full Fat SKU Yet To Arrive With 32 GB HBM2
One of the surprising thing about today’s announcement is that the Tesla P100 isn’t based on the full fat GP100 GPU but a cut down version with 3584 CUDA Cores. The actual chip is a behemoth in terms of design, featuring up to 3840 CUDA Cores and 32 GB of HBM2 memory. Its possible that we will see a standard graphics board design later in the roadmap which will be able to achieve full 12 TFLOPs of processing power on board the new GP100 graphics processing unit.
|GPU Family||AMD Vega||AMD Navi||NVIDIA Pascal||NVIDIA Volta|
|Flagship GPU||Vega 10||Navi 10?||NVIDIA GP100||NVIDIA GV100|
|GPU Process||14nm FinFET||7nm FinFET?||TSMC 16nm FinFET||TSMC 12nm FinFET|
|GPU Transistors||15-18 Billion||TBC||15.3 Billion||21.1 Billion|
|GPU Cores (Max)||4096 SPs||TBC||3840 CUDA Cores||5376 CUDA Cores|
|Peak FP32 Compute||12.5 TFLOPs||TBC||12.0 TFLOPs||15.0 TFLOPs|
|Peak FP16 Compute||25.0 TFLOPs||TBC||24.0 TFLOPs||120 Tensor TFLOPs|
|VRAM||16 GB HBM2||TBC||16 GB HBM2||16 GB HBM2|
|Memory (Consumer Cards)||HBM2||HBM3||GDDR5X||GDDR6|
|Memory (Dual-Chip Professional/ HPC)||HBM2||HBM3||HBM2||HBM2|
|HBM2 Bandwidth||480 GB/s (Instinct MI25)||>1 TB/s?||732 GB/s (Peak)||900 GB/s|
|Graphics Architecture||Next Compute Unit (Vega)||Next Compute Unit (Navi)||5th Gen Pascal CUDA||6th Gen Volta CUDA|
|Successor of (GPU)||Radeon RX 500 Series?||Radeon RX 600 Series?||GM200 (Maxwell)||GP100 (Pascal)|
NVIDIA’s NVLINK Is a Fast GPU Interconnect Fabric With Speeds of 160 GB/s – Backbone of NVIDIA Powered Supercomputers
The Pascal GP100 GPU is a server and workstation class chip and since it is aimed at the HPC market first, the GPU would also introduce NVLINK which is the next generation Unified Virtual Memory link with Gen 2.0 Cache coherency features and 5 – 12 times the bandwidth of a regular PCIe connection. This will solve many of the bandwidth issues that high performance GPUs currently face.
NVLINK will allow several GPUs to be connected in parallel in HPC focused platforms that will feature several nodes fitted with Pascal GPUs for compute oriented workloads. The latest NVLINK interconnect path will allow multi-processors featured inside HPC blocks to have faster interconnect than traditional PCI-e Gen3 lanes up to 160 GB/s speeds. Pascal GPUs will also feature Unified memory support allowing the CPU and GPU to share the same memory pool and finally we have Mixed precision support. NVLINK will be featured in PCs using ARM64 chips and some x86 powered HPC servers that utilize OpenPower, Tyan and Quantum solutions.
The Pascal based Tesla GPU is the next incremental step in HPC acceleration. This is NVIDIA’s fastest graphics card to date for the professional market and we can’t wait for NVIDIA to release a consumer version of the GPU later this year. As stated before, the Pascal GPU will be shipping to cloud services first in 2016 followed by OEMs in Q1 2017.
NVIDIA Tesla Graphics Cards Comparison:
|Tesla Graphics Card Name||NVIDIA Tesla M2090||NVIDIA Tesla K40||NVIDIA Telsa K80||NVIDIA Tesla P100||NVIDIA Tesla V100|
|GPU Name||GF110||GK110||GK210 x 2||GP100||GV100|
|Transistor Count||3.00 Billion||7.08 Billion||7.08 Billion||15 Billion||21.1 Billion|
|CUDA Cores||512 CCs (16 CUs)||2880 CCs (15 CUs)||2496 CCs (13 CUs) x 2||3840 CCs||5120 CCs|
|Core Clock||Up To 650 MHz||Up To 875 MHz||Up To 875 MHz||Up To 1480 MHz||Up To 1455 MHz|
|FP32 Compute||1.33 TFLOPs||4.29 TFLOPs||8.74 TFLOPs||10.6 TFLOPs||15.0 TFLOPs|
|FP64 Compute||0.66 TFLOPs||1.43 TFLOPs||2.91 TFLOPs||5.30 TFLOPs||7.50 TFLOPs|
|VRAM Size||6 GB||12 GB||12 GB x 2||16 GB||16 GB|
|VRAM Bus||384-bit||384-bit||384-bit x 2||4096-bit||4096-bit|
|VRAM Speed||3.7 GHz||6 GHz||5 GHz||737 MHz||878 MHz|
|Memory Bandwidth||177.6 GB/s||288 GB/s||240 GB/s||720 GB/s||900 GB/s|