Welcome to SESDA

  • The Heliophysics STEM Innovation Lab on TED

ADNET Systems Inc. has been awarded the Space and Earth Science Data Analysis (SESDA-IV) contract by the National Aeronautics and Space Administration (NASA) to support the Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. SESDA-IV is a five-year cost-plus fixed-fee contract with a total potential value of approximately $250 million.

Under SESDA-IV, ADNET will provide a broad range of services to support Earth and Space science research and development, data operations, as well as activities in information system technologies, engineering, and science communication, education and public outreach that enable the Sciences and Exploration Directorate to successfully carry out its science missions at the Goddard Space Flight Center (GSFC).

SESDA is the premier Space and Earth science contract at GSFC and this award represents the third straight time ADNET Systems has been selected for this prestigious contract. Over 300 scientists, engineers, and education outreach specialists support the SESDA contract through a broad range of science disciplines, including solar and space plasma physics, astrophysics and astronomy, planetary studies, atmospheric science and climatology, oceanography, land processes, geodynamics, and solid earth geographics. “All of us at ADNET are pleased and excited to continue our partnership with NASA and we are thrilled to be selected as the SESDA contractor for the third time.” said Ashok Jha, President and CEO of ADNET.

Read more about SESDA and ADNET Systems


HECN Work at SC19

December 20, 2019

Paul Lang next to the HECN-built equipment

SESDA’s HECN team, working with the Mid-Atlantic Crossroads (MAX), the Naval Research Laboratory (NRL), the 100-GigE Ciena Testbed, the StarLight national and international optical network exchange facility, CenturyLink, Internet2, and SCinet, created a multi-100-GigE network topology for live demos at SuperComputing 2019 in Denver, CO.  This included 4×100-GigE network paths between NASA Goddard and SC19, 2×100-GigE network paths between StarLight and SC19, and 2×100-GigE network paths between NASA Goddard and StarLight. 

At SC19 the HECN team demonstrated the use of NVMe over Fabric over TCP (NVMe-oF/TCP) technology across a 4×100-GigE wide-area network (WAN) infrastructure as a SCinet Network Research Experiment (NRE).  The experiments showcased very high performance disk-to-memory and disk-to-disk network data transfers between a single high performance 4×100-GigE NVMe server at SC19 and a single 2×100-GigE high performance NVMe client at NASA Goddard, with only a moderate level of system CPU utilization on the server.  The top result was an aggregate throughput of nearly 200 Gigabits per second (Gbps) on 64 reads across 16 NVMe drives using 2 100-GigE WAN links. When doing full disk-to-disk network data transfers using NVMe-oF/TCP to read a remote NVMe drive and then write to a local NVMe drive, the aggregate throughput dropped to about 120 Gbps.  This may be due to inadequate buffering to handle the slower NVMe write speeds and requires further investigation.  Also performed were more traditional network data transfers using the normal Linux TCP/IP network stack, which achieved an aggregate throughput of almost 200 Gbps while totally consuming all of the system CPU resources.

Network Topology used for the used for the demonstrations at the SuperComputing 2019 (SC19) event in  Denver, CO in Nov 2019

SESDA Hosts IHDEA

December 16, 2019

The SESDA team helped host the 3rd International Heliophysics Data Environment Alliance (IHDEA) meeting at the Goddard Corporate Park facility during October 16-18, 2019. The primary goal of the meeting was to establish the IHDEA, which has the goals of fostering coordinated development of common data standards and services, and promoting their use to enable efficient and effective sharing of Heliophysics data (from space, ground, and models) so as to enhance the scientific return of the data and facilitate new discovery. The meeting was a resounding success marked by the completion of drafts of the IHDEA Charter and Bylaws documents which will be finalized and released to the International Heliophysics community with a formal announcement of the establishment of the IHDEA.

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