Accelerating HPC Applications with Panasas’ ASCA Intelligent Data Placement Architecture

By Curtis Anderson, Software Architect at Panasas.

March 23, 2020

Organizations need to periodically rethink their high-performance storage strategies due to changing requirements for high-performance computing (HPC).

In the past, a lab or corporation might run a limited set of HPC applications. So a system and its storage could be optimized for a narrow set of workloads. Today, HPC workloads in most organizations are highly variable. One group might need to train a machine learning model, another might run very granular finite element simulation models, and yet another might require the lookup and high-speed search of a massive genomics database.

Each of these workloads has vastly different computational requirements; organizations can no longer rely on a solution optimized for a specific workload.

Further complicating matters is the type of data being used in HPC applications. Many more workloads today use large numbers of small files. In general, the number of small files is going up, and the average size of the files is going down. This has great implications when trying to match a suitable high-performance storage system to HPC processing power and memory systems.

Organizations must find a balance where appropriate storage is matched to file workloads to ensure a cost-effective solution that delivers the needed performance. Let’s take a look at what’s at issue and how an intelligent data placement architecture can help.

Why are these changes an issue?

With any HPC application, the challenge is how to keep the CPUs (and now GPUs) satiated to make the most efficient use of expensive HPC hardware. The combination of variable workloads and the growing number and small size of data files makes this harder to achieve.

If a system just uses HDD storage, its performance suffers if an application makes use of many small files. Conversely, SSDs will solve the performance problem for small files, but it is cost-prohibitive to use SSDs for everything at the high capacities HPC applications require.

Typical approaches use a small number of SSDs for so-called hot data (data that has recently been read or written), independent of the file sizes involved. While this can help workloads where data reuse is high, is doesn’t help workloads like AI where there is very little data reuse during any given training session.  It’s especially challenging to use so-called “LRU” (Least Recently Used) caching with such a widely mixed workload.

Solution: The Panasas ASCA Intelligent Data Placement Architecture

Panasas ActiveStor® solutions provide high-performance scale-out storage for HPC applications. They address mixed workload and file size issues using a data placement architecture called Adaptive Small Component Acceleration (ASCA) https://www.panasas.com/company/why-panasas/high-performance/.

The ActiveStor solution lets organizations use the right kind of storage for each kind of data. Large files are stored on low-cost, high-bandwidth SATA HDDs, small files are stored on cost-effective, high-IOPs SATA SSDs, and metadata is stored in a database on low-latency NVMe SSDs.  The solution includes just enough of the more expensive types of storage media, minimizing overall cost while still delivering the best performance.

ASCA is a hands-off, automated solution that dynamically moves data between SSDs and HDDs based on the mix of file sizes and the fullness of the SSDs. It ensures that any file smaller than about 128KB will be kept on SATA SSDs, while larger files are stored on HDDs, but ASCA automatically adjusts that 128KB line. If the SSDs are too full, the largest files stored on the SSDs are migrated to the HDDs, and if the SSDs are not full enough, the smallest files on the HDDs are migrated to the SSDs.

ASCA addresses performance issues in several ways. File performance is a combination of accessing the metadata for each file plus accessing the data in that file. The Panasas solution improves the raw speed of accesses to metadata by keeping the metadata in a database and storing that database on NVMe SSDs. SATA SSDs are a cost-effective and high-performance way to store and deliver small files without seek penalties. And finally, ASCA allows HHDs to consistently deliver their highest bandwidth because they are not burdened with any head seeks for small files or for metadata.

The net result of this combination is that the more costly device types are minimized, and every device is only doing what it is good at.  Small file accesses will not impact the performance of large files, and metadata accesses never wait behind file accesses.

The performance benefits of using the intelligent data placement architecture of ASCA complement the many ease-of-management, and scalability benefits already delivered with Panasas ActiveStor and Panasas PanFS®, the operating environment for Panasas ActiveStor systems.

Simply put, Panasas provides scale-out storage with limitless scaling offering optimal data placement and an internally balanced architecture to boost efficiency.

For more information about matching storage to today’s HPC workloads, visit www.panasas.com

 

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!

Supercomputer Analysis Shows the Atmospheric Reach of the Tonga Eruption

January 21, 2022

On Saturday, an enormous eruption on the volcanic islands of Hunga Tonga and Hunga Haʻapai shook the Pacific Ocean. The explosion, which could be heard six thousand miles away in Alaska, caused tsunamis across the entir Read more…

NSB Issues US State of Science and Engineering 2022 Report

January 20, 2022

This week the National Science Board released its biannual U.S. State of Science and Engineering 2022 report, as required by the NSF Act. Broadly, the report presents a near-term view of S&E based mostly on 2019 data. To a large extent, this year’s edition echoes trends from the last few reports. The U.S. is still a world leader in R&D spending and S&E education... Read more…

Researchers Achieve 99 Percent Quantum Accuracy with Silicon-Embedded Qubits 

January 20, 2022

Researchers in Australia and the U.S. have made exciting headway in the quantum computing arms race. A multi-institutional team including the University of New South Wales and Sandia National Laboratory announced that th Read more…

Trio of Supercomputers Powers Estimate of Carbon in Earth’s Outer Core

January 20, 2022

Carbon is one of the essential building blocks of life on Earth, and it—along with hydrogen, nitrogen and oxygen—is one of the key elements researchers look for when they search for habitable planets and work to unde Read more…

Multiverse Targets ‘Quantum Computing for the Masses’

January 19, 2022

The race to deliver quantum computing solutions that shield users from the underlying complexity of quantum computing is heating up quickly. One example is Multiverse Computing, a European company, which today launched the second financial services product in its Singularity product group. The new offering, Fair Price, “delivers a higher accuracy in fair price calculations for financial... Read more…

AWS Solution Channel

shutterstock 718231072

Accelerating drug discovery with Amazon EC2 Spot Instances

This post was contributed by Cristian Măgherușan-Stanciu, Sr. Specialist Solution Architect, EC2 Spot, with contributions from Cristian Kniep, Sr. Developer Advocate for HPC and AWS Batch at AWS, Carlos Manzanedo Rueda, Principal Solutions Architect, EC2 Spot at AWS, Ludvig Nordstrom, Principal Solutions Architect at AWS, Vytautas Gapsys, project group leader at the Max Planck Institute for Biophysical Chemistry, and Carsten Kutzner, staff scientist at the Max Planck Institute for Biophysical Chemistry. Read more…

Students at SC21: Out in Front, Alongside and Behind the Scenes

January 19, 2022

The Supercomputing Conference (SC) is one of the biggest international conferences dedicated to high-performance computing, networking, storage and analysis. SC21 was a true ‘hybrid’ conference, with a total of 380 o Read more…

Supercomputer Analysis Shows the Atmospheric Reach of the Tonga Eruption

January 21, 2022

On Saturday, an enormous eruption on the volcanic islands of Hunga Tonga and Hunga Haʻapai shook the Pacific Ocean. The explosion, which could be heard six tho Read more…

NSB Issues US State of Science and Engineering 2022 Report

January 20, 2022

This week the National Science Board released its biannual U.S. State of Science and Engineering 2022 report, as required by the NSF Act. Broadly, the report presents a near-term view of S&E based mostly on 2019 data. To a large extent, this year’s edition echoes trends from the last few reports. The U.S. is still a world leader in R&D spending and S&E education... Read more…

Multiverse Targets ‘Quantum Computing for the Masses’

January 19, 2022

The race to deliver quantum computing solutions that shield users from the underlying complexity of quantum computing is heating up quickly. One example is Multiverse Computing, a European company, which today launched the second financial services product in its Singularity product group. The new offering, Fair Price, “delivers a higher accuracy in fair price calculations for financial... Read more…

Students at SC21: Out in Front, Alongside and Behind the Scenes

January 19, 2022

The Supercomputing Conference (SC) is one of the biggest international conferences dedicated to high-performance computing, networking, storage and analysis. SC Read more…

Q-Ctrl – Tackling Quantum Hardware’s Noise Problems with Software

January 13, 2022

Implementing effective error mitigation and correction is a critical next step in advancing quantum computing. While a lot of attention has been given to effort Read more…

Nvidia Defends Arm Acquisition Deal: a ‘Once-in-a-Generation Opportunity’

January 13, 2022

GPU-maker Nvidia is continuing to try to keep its proposed acquisition of British chip IP vendor Arm Ltd. alive, despite continuing concerns from several governments around the world. In its latest action, Nvidia filed a 29-page response to the U.K. government to point out a list of potential benefits of the proposed $40 billion deal. Read more…

Nvidia Buys HPC Cluster Management Company Bright Computing

January 10, 2022

Graphics chip powerhouse Nvidia today announced that it has acquired HPC cluster management company Bright Computing for an undisclosed sum. Unlike Nvidia’s bid to purchase semiconductor IP company Arm, which has been stymied by regulatory challenges, the Bright deal is a straightforward acquisition that aims to expand... Read more…

SC21 Panel on Programming Models – Tackling Data Movement, DSLs, More

January 6, 2022

How will programming future systems differ from current practice? This is an ever-present question in computing. Yet it has, perhaps, never been more pressing g Read more…

IonQ Is First Quantum Startup to Go Public; Will It be First to Deliver Profits?

November 3, 2021

On October 1 of this year, IonQ became the first pure-play quantum computing start-up to go public. At this writing, the stock (NYSE: IONQ) was around $15 and its market capitalization was roughly $2.89 billion. Co-founder and chief scientist Chris Monroe says it was fun to have a few of the company’s roughly 100 employees travel to New York to ring the opening bell of the New York Stock... Read more…

US Closes in on Exascale: Frontier Installation Is Underway

September 29, 2021

At the Advanced Scientific Computing Advisory Committee (ASCAC) meeting, held by Zoom this week (Sept. 29-30), it was revealed that the Frontier supercomputer is currently being installed at Oak Ridge National Laboratory in Oak Ridge, Tenn. The staff at the Oak Ridge Leadership... Read more…

AMD Launches Milan-X CPU with 3D V-Cache and Multichip Instinct MI200 GPU

November 8, 2021

At a virtual event this morning, AMD CEO Lisa Su unveiled the company’s latest and much-anticipated server products: the new Milan-X CPU, which leverages AMD’s new 3D V-Cache technology; and its new Instinct MI200 GPU, which provides up to 220 compute units across two Infinity Fabric-connected dies, delivering an astounding 47.9 peak double-precision teraflops. “We're in a high-performance computing megacycle, driven by the growing need to deploy additional compute performance... Read more…

Intel Reorgs HPC Group, Creates Two ‘Super Compute’ Groups

October 15, 2021

Following on changes made in June that moved Intel’s HPC unit out of the Data Platform Group and into the newly created Accelerated Computing Systems and Graphics (AXG) business unit, led by Raja Koduri, Intel is making further updates to the HPC group and announcing... Read more…

Nvidia Buys HPC Cluster Management Company Bright Computing

January 10, 2022

Graphics chip powerhouse Nvidia today announced that it has acquired HPC cluster management company Bright Computing for an undisclosed sum. Unlike Nvidia’s bid to purchase semiconductor IP company Arm, which has been stymied by regulatory challenges, the Bright deal is a straightforward acquisition that aims to expand... Read more…

D-Wave Embraces Gate-Based Quantum Computing; Charts Path Forward

October 21, 2021

Earlier this month D-Wave Systems, the quantum computing pioneer that has long championed quantum annealing-based quantum computing (and sometimes taken heat fo Read more…

Killer Instinct: AMD’s Multi-Chip MI200 GPU Readies for a Major Global Debut

October 21, 2021

AMD’s next-generation supercomputer GPU is on its way – and by all appearances, it’s about to make a name for itself. The AMD Radeon Instinct MI200 GPU (a successor to the MI100) will, over the next year, begin to power three massive systems on three continents: the United States’ exascale Frontier system; the European Union’s pre-exascale LUMI system; and Australia’s petascale Setonix system. Read more…

Three Chinese Exascale Systems Detailed at SC21: Two Operational and One Delayed

November 24, 2021

Details about two previously rumored Chinese exascale systems came to light during last week’s SC21 proceedings. Asked about these systems during the Top500 media briefing on Monday, Nov. 15, list author and co-founder Jack Dongarra indicated he was aware of some very impressive results, but withheld comment when asked directly if he had... Read more…

Leading Solution Providers

Contributors

Lessons from LLVM: An SC21 Fireside Chat with Chris Lattner

December 27, 2021

Today, the LLVM compiler infrastructure world is essentially inescapable in HPC. But back in the 2000 timeframe, LLVM (low level virtual machine) was just getting its start as a new way of thinking about how to overcome shortcomings in the Java Virtual Machine. At the time, Chris Lattner was a graduate student of... Read more…

2021 Gordon Bell Prize Goes to Exascale-Powered Quantum Supremacy Challenge

November 18, 2021

Today at the hybrid virtual/in-person SC21 conference, the organizers announced the winners of the 2021 ACM Gordon Bell Prize: a team of Chinese researchers leveraging the new exascale Sunway system to simulate quantum circuits. The Gordon Bell Prize, which comes with an award of $10,000 courtesy of HPC pioneer Gordon Bell, is awarded annually... Read more…

Julia Update: Adoption Keeps Climbing; Is It a Python Challenger?

January 13, 2021

The rapid adoption of Julia, the open source, high level programing language with roots at MIT, shows no sign of slowing according to data from Julialang.org. I Read more…

Top500: No Exascale, Fugaku Still Reigns, Polaris Debuts at #12

November 15, 2021

No exascale for you* -- at least, not within the High-Performance Linpack (HPL) territory of the latest Top500 list, issued today from the 33rd annual Supercomputing Conference (SC21), held in-person in St. Louis, Mo., and virtually, from Nov. 14–19. "We were hoping to have the first exascale system on this list but that didn’t happen," said Top500 co-author... Read more…

Nvidia Defends Arm Acquisition Deal: a ‘Once-in-a-Generation Opportunity’

January 13, 2022

GPU-maker Nvidia is continuing to try to keep its proposed acquisition of British chip IP vendor Arm Ltd. alive, despite continuing concerns from several governments around the world. In its latest action, Nvidia filed a 29-page response to the U.K. government to point out a list of potential benefits of the proposed $40 billion deal. Read more…

TACC Unveils Lonestar6 Supercomputer

November 1, 2021

The Texas Advanced Computing Center (TACC) is unveiling its latest supercomputer: Lonestar6, a three peak petaflops Dell system aimed at supporting researchers Read more…

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…

Intel Launches 10nm ‘Ice Lake’ Datacenter CPU with Up to 40 Cores

April 6, 2021

The wait is over. Today Intel officially launched its 10nm datacenter CPU, the third-generation Intel Xeon Scalable processor, codenamed Ice Lake. With up to 40 Read more…

  • arrow
  • Click Here for More Headlines
  • arrow
HPCwire