Dell Ramps Up HPC Testing of AMD Rome Processors

By John Russell

October 21, 2019

Dell Technologies is wading deeper into the AMD-based systems market with a growing evaluation program for the latest Epyc (Rome) microprocessors from AMD. In a recent blog (AMD Rome – is it for real? Architecture and initial HPC performance) Dell posted early benchmark data for Rome as well as introducing Minerva, a 64-server, Rome-based, PowerEdge C6525 cluster it is using in its Austin-based HPC and AI Innovation Lab.

The blog’s authors, Garima Kochhar, Deepthi Cherlopalle, and Joshua Weage, write: “This first blog in the Rome series will discuss the Rome processor architecture, how that can be tuned for HPC performance and present initial micro-benchmark performance. Subsequent blogs will describe application performance across the domains of CFD, CAE, molecular dynamics, weather simulation, and other applications.

“Initial performance studies on Rome-based servers show expected performance for our first set of HPC benchmarks. BIOS tuning is important when configuring for best performance, and tuning options are available in our BIOS HPC workload profile that can be configured in the factory or set using Dell EMC systems management utilities. The HPC and AI Innovation Lab have a new 64-server Rome based PowerEdge cluster Minerva. Watch this space for subsequent blogs that describe application performance studies on our new Minerva cluster.”

The assessment and calling attention to its Minerva cluster seem to indicate a strengthening bet by Dell on the AMD line of microprocessors. The blog mostly focused on Rome’s I/O bandwidth and flexible NUMA configurations. Both STREAM and HPL benchmarks were run.

As explained in the blog: “The four logical quadrants in a Rome processor allow the CPU to be partitioned into different NUMA domains. This setting is called NUMA per socket or NPS.

  • NPS1 implies the Rome CPU is a single NUMA domain, with all the cores in the socket and all the memory in this one NUMA domain. Memory is interleaved across the eight memory channels. All PCIe devices on the socket belong to this single NUMA domain
  • NPS2 partitions the CPU into two NUMA domains, with half the cores and half the memory channels on the socket in each NUMA domain. Memory is interleaved across the four memory channels in each NUMA domain
  • NPS4 partitions the CPU into four NUMA domains. Each quadrant is a NUMA domain here and memory is interleaved across the two memory channels in each quadrant. PCIe devices will be local to one of four NUMA domains on the socket depending on which quadrant of the IO die has the PCIe root for that device
  • Not all CPUs can support all NPS settings”

The blog authors say that, “where available, NPS4 is recommended for HPC since it is expected to provide the best memory bandwidth, lowest memory latencies, and our applications tend to be NUMA-aware. Where NPS4 is not available we recommend the highest NPS supported by the CPU model – NPS2, or even NPS1

Here is an excerpt from the blog on STREAM performance with a couple of figures:

“Memory bandwidth tests on Rome are presented in Figure.6, these tests were run in NPS4 mode. We measured ~270-300 GB/s memory bandwidth on our dual-socket PowerEdge C6525 when using all the cores in the server across the four CPU models listed in Table.1. When only one core is used per CCX, the system memory bandwidth is ~9-17% higher than that measured with all cores.

“Most HPC workloads will either fully subscribe all the cores in the system, or HPC centers run in high throughput mode with multiple jobs on each server. Hence the all-core memory bandwidth is the more accurate representation of the memory bandwidth and memory-bandwidth-per-core capabilities of the system.

“Figure.6 also plots the memory bandwidth measured on the previous generation EPYC Naples platform, which also supported eight memory channels per socket but running at 2667 MT/s. The Rome platform provides 5% to 19% better total memory bandwidth than Naples, and this is predominantly due to the faster 3200 MT/s memory. Even with 64c per socket, the Rome system can deliver upwards of 2 GB/s/core.”

Rome also performed well on HPL (portable version of Linpack). The blog notes:

“The Rome micro-architecture can retire 16 DP FLOP/cycle, double that of Naples which was 8 FLOPS/cycle. This gives Rome 4x the theoretical peak FLOPS over Naples, 2x from the enhanced floating-point capability, and 2x from double the number of cores (64c vs 32c). Figure.10 plots the measured HPL results for the four Rome CPU models we tested, along with our previous results from a Naples-based system. The Rome HPL efficiency is noted as the percentage value above the bars on the graph and is higher for the lower TDP CPU models.

Tests were run in Power Determinism mode, and a ~5% delta in performance was measured across 64 identically configured servers, the results here are thus in that performance band.

“Next multi-node HPL tests were executed and those results are plotted in Figure.11. The HPL efficiencies for EPYC 7452 remain above 90% at a 64-node scale, but the dips in efficiency from 102% down to 97% and back up to 99% need further evaluation.”

Link to Dell blog: https://www.dell.com/support/article/bb/en/bbbsdt1/sln319015/amd-rome-is-it-for-real-architecture-and-initial-hpc-performance?lang=en

 

Subscribe to HPCwire's Weekly Update!

Be the most informed person in the room! Stay ahead of the tech trends with industy updates delivered to you every week!

D-Wave Delivers 5000-qubit System; Targets Quantum Advantage

September 29, 2020

D-Wave today launched its newest and largest quantum annealing computer, a 5000-qubit goliath named Advantage that features 15-way qubit interconnectivity. It also introduced the D-Wave Launch program intended to jump st Read more…

By John Russell

What’s New in Computing vs. COVID-19: AMD, Remdesivir, Fab Spending & More

September 29, 2020

Supercomputing, big data and artificial intelligence are crucial tools in the fight against the coronavirus pandemic. Around the world, researchers, corporations and governments are urgently devoting their computing reso Read more…

By Oliver Peckham

Global QC Market Projected to Grow to More Than $800 million by 2024

September 28, 2020

The Quantum Economic Development Consortium (QED-C) and Hyperion Research are projecting that the global quantum computing (QC) market - worth an estimated $320 million in 2020 - will grow at an anticipated 27% CAGR betw Read more…

By Staff Reports

DoE’s ASCAC Backs AI for Science Program that Emulates the Exascale Initiative

September 28, 2020

Roughly a year after beginning formal efforts to explore an AI for Science initiative the Department of Energy’s Advanced Scientific Computing Advisory Committee last week accepted a subcommittee report calling for a t Read more…

By John Russell

Supercomputer Research Aims to Supercharge COVID-19 Antiviral Remdesivir

September 25, 2020

Remdesivir is one of a handful of therapeutic antiviral drugs that have been proven to improve outcomes for COVID-19 patients, and as such, is a crucial weapon in the fight against the pandemic – especially in the abse Read more…

By Oliver Peckham

AWS Solution Channel

The Water Institute of the Gulf runs compute-heavy storm surge and wave simulations on AWS

The Water Institute of the Gulf (Water Institute) runs its storm surge and wave analysis models on Amazon Web Services (AWS)—a task that sometimes requires large bursts of compute power. Read more…

Intel® HPC + AI Pavilion

Berlin Institute of Health: Putting HPC to Work for the World

Researchers from the Center for Digital Health at the Berlin Institute of Health (BIH) are using science to understand the pathophysiology of COVID-19, which can help to inform the development of targeted treatments. Read more…

NOAA Announces Major Upgrade to Ensemble Forecast Model, Extends Range to 35 Days

September 23, 2020

A bit over a year ago, the United States’ Global Forecast System (GFS) received a major upgrade: a new dynamical core – its first in 40 years – called the finite-volume cubed-sphere, or FV3. Now, the National Oceanic and Atmospheric Administration (NOAA) is bringing the FV3 dynamical core to... Read more…

By Oliver Peckham

D-Wave Delivers 5000-qubit System; Targets Quantum Advantage

September 29, 2020

D-Wave today launched its newest and largest quantum annealing computer, a 5000-qubit goliath named Advantage that features 15-way qubit interconnectivity. It a Read more…

By John Russell

DoE’s ASCAC Backs AI for Science Program that Emulates the Exascale Initiative

September 28, 2020

Roughly a year after beginning formal efforts to explore an AI for Science initiative the Department of Energy’s Advanced Scientific Computing Advisory Commit Read more…

By John Russell

NOAA Announces Major Upgrade to Ensemble Forecast Model, Extends Range to 35 Days

September 23, 2020

A bit over a year ago, the United States’ Global Forecast System (GFS) received a major upgrade: a new dynamical core – its first in 40 years – called the finite-volume cubed-sphere, or FV3. Now, the National Oceanic and Atmospheric Administration (NOAA) is bringing the FV3 dynamical core to... Read more…

By Oliver Peckham

Arm Targets HPC with New Neoverse Platforms

September 22, 2020

UK-based semiconductor design company Arm today teased details of its Neoverse roadmap, introducing V1 (codenamed Zeus) and N2 (codenamed Perseus), Arm’s second generation N-series platform. The chip IP vendor said the new platforms will deliver 50 percent and 40 percent more... Read more…

By Tiffany Trader

Oracle Cloud Deepens HPC Embrace with Launch of A100 Instances, Plans for Arm, More 

September 22, 2020

Oracle Cloud Infrastructure (OCI) continued its steady ramp-up of HPC capabilities today with a flurry of announcements. Topping the list is general availabilit Read more…

By John Russell

European Commission Declares €8 Billion Investment in Supercomputing

September 18, 2020

Just under two years ago, the European Commission formalized the EuroHPC Joint Undertaking (JU): a concerted HPC effort (comprising 32 participating states at c Read more…

By Oliver Peckham

Google Hires Longtime Intel Exec Bill Magro to Lead HPC Strategy

September 18, 2020

In a sign of the times, another prominent HPCer has made a move to a hyperscaler. Longtime Intel executive Bill Magro joined Google as chief technologist for hi Read more…

By Tiffany Trader

Future of Fintech on Display at HPC + AI Wall Street

September 17, 2020

Those who tuned in for Tuesday's HPC + AI Wall Street event got a peak at the future of fintech and lively discussion of topics like blockchain, AI for risk man Read more…

By Alex Woodie, Tiffany Trader and Todd R. Weiss

Supercomputer-Powered Research Uncovers Signs of ‘Bradykinin Storm’ That May Explain COVID-19 Symptoms

July 28, 2020

Doctors and medical researchers have struggled to pinpoint – let alone explain – the deluge of symptoms induced by COVID-19 infections in patients, and what Read more…

By Oliver Peckham

Nvidia Said to Be Close on Arm Deal

August 3, 2020

GPU leader Nvidia Corp. is in talks to buy U.K. chip designer Arm from parent company Softbank, according to several reports over the weekend. If consummated Read more…

By George Leopold

10nm, 7nm, 5nm…. Should the Chip Nanometer Metric Be Replaced?

June 1, 2020

The biggest cool factor in server chips is the nanometer. AMD beating Intel to a CPU built on a 7nm process node* – with 5nm and 3nm on the way – has been i Read more…

By Doug Black

Intel’s 7nm Slip Raises Questions About Ponte Vecchio GPU, Aurora Supercomputer

July 30, 2020

During its second-quarter earnings call, Intel announced a one-year delay of its 7nm process technology, which it says it will create an approximate six-month shift for its CPU product timing relative to prior expectations. The primary issue is a defect mode in the 7nm process that resulted in yield degradation... Read more…

By Tiffany Trader

Google Hires Longtime Intel Exec Bill Magro to Lead HPC Strategy

September 18, 2020

In a sign of the times, another prominent HPCer has made a move to a hyperscaler. Longtime Intel executive Bill Magro joined Google as chief technologist for hi Read more…

By Tiffany Trader

HPE Keeps Cray Brand Promise, Reveals HPE Cray Supercomputing Line

August 4, 2020

The HPC community, ever-affectionate toward Cray and its eponymous founder, can breathe a (virtual) sigh of relief. The Cray brand will live on, encompassing th Read more…

By Tiffany Trader

Neocortex Will Be First-of-Its-Kind 800,000-Core AI Supercomputer

June 9, 2020

Pittsburgh Supercomputing Center (PSC - a joint research organization of Carnegie Mellon University and the University of Pittsburgh) has won a $5 million award Read more…

By Tiffany Trader

European Commission Declares €8 Billion Investment in Supercomputing

September 18, 2020

Just under two years ago, the European Commission formalized the EuroHPC Joint Undertaking (JU): a concerted HPC effort (comprising 32 participating states at c Read more…

By Oliver Peckham

Leading Solution Providers

Contributors

Oracle Cloud Infrastructure Powers Fugaku’s Storage, Scores IO500 Win

August 28, 2020

In June, RIKEN shook the supercomputing world with its Arm-based, Fujitsu-built juggernaut: Fugaku. The system, which weighs in at 415.5 Linpack petaflops, topp Read more…

By Oliver Peckham

Google Cloud Debuts 16-GPU Ampere A100 Instances

July 7, 2020

On the heels of the Nvidia’s Ampere A100 GPU launch in May, Google Cloud is announcing alpha availability of the A100 “Accelerator Optimized” VM A2 instance family on Google Compute Engine. The instances are powered by the HGX A100 16-GPU platform, which combines two HGX A100 8-GPU baseboards using... Read more…

By Tiffany Trader

DOD Orders Two AI-Focused Supercomputers from Liqid

August 24, 2020

The U.S. Department of Defense is making a big investment in data analytics and AI computing with the procurement of two HPC systems that will provide the High Read more…

By Tiffany Trader

Supercomputer Modeling Tests How COVID-19 Spreads in Grocery Stores

April 8, 2020

In the COVID-19 era, many people are treating simple activities like getting gas or groceries with caution as they try to heed social distancing mandates and protect their own health. Still, significant uncertainty surrounds the relative risk of different activities, and conflicting information is prevalent. A team of Finnish researchers set out to address some of these uncertainties by... Read more…

By Oliver Peckham

Microsoft Azure Adds A100 GPU Instances for ‘Supercomputer-Class AI’ in the Cloud

August 19, 2020

Microsoft Azure continues to infuse its cloud platform with HPC- and AI-directed technologies. Today the cloud services purveyor announced a new virtual machine Read more…

By Tiffany Trader

Japan’s Fugaku Tops Global Supercomputing Rankings

June 22, 2020

A new Top500 champ was unveiled today. Supercomputer Fugaku, the pride of Japan and the namesake of Mount Fuji, vaulted to the top of the 55th edition of the To Read more…

By Tiffany Trader

Joliot-Curie Supercomputer Used to Build First Full, High-Fidelity Aircraft Engine Simulation

July 14, 2020

When industrial designers plan the design of a new element of a vehicle’s propulsion or exterior, they typically use fluid dynamics to optimize airflow and in Read more…

By Oliver Peckham

Intel Speeds NAMD by 1.8x: Saves Xeon Processor Users Millions of Compute Hours

August 12, 2020

Potentially saving datacenters millions of CPU node hours, Intel and the University of Illinois at Urbana–Champaign (UIUC) have collaborated to develop AVX-512 optimizations for the NAMD scalable molecular dynamics code. These optimizations will be incorporated into release 2.15 with patches available for earlier versions. Read more…

By Rob Farber

  • arrow
  • Click Here for More Headlines
  • arrow
Do NOT follow this link or you will be banned from the site!
Share This