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Hirofumi Ohkawa

dblp:70/5282 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2006
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Systems, architecture and hardware · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer architecture, parallel and distributed computing, and storage systems
1 paper
Storage systems · 87% High-performance computing · 13%
Network and information security
1 paper
Network security · 100%

Topics — the 5 heaviest of 6, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Storage systems › file systems
distributed file system		 0.112006
Bandwidth challenge - Secure file sharing · SC 2006
Storage systems › secure storage
secure file sharing		 0.112006
Bandwidth challenge - Secure file sharing · SC 2006
Network security › secure communication › network-layer security
IPsec		 0.012006
Bandwidth challenge - Secure file sharing · SC 2006
Network security › secure communication
network-layer security		 0.012006
Bandwidth challenge - Secure file sharing · SC 2006
High-performance computing › data transfer
high-speed data transfer		 0.012006
Bandwidth challenge - Secure file sharing · SC 2006

Methods — techniques the papers use, named apart from their topics

protocol switching · 0.1data stream striping · 0.1TCP/IP parameter tuning · 0.1
YearPublicationVenuePosition
2006 Bandwidth challenge - Secure file sharing
abstract
SRFS on Ether adds an ethernet interface to the Shared Rapid File System (SRFS) that is currently used as a distributed file system between nodes by the HPC-system. It can be used like NFS and has solved the problem of data coherency in the high-speed transmission of data in a broadband environment, which NFS has not. Moreover, adjustment of the TCP/IP parameters in the OS to improve speed is unnecessary, and special hardware is not needed, unlike with the SAN construction by iFCP and others. For additional speed, it stripes data streams automatically (default MAX 8 streams), switches protocols between TCP and UDP based on IOsize.In this bandwidth challenge, we demonstrate security using a host-to-host IPSec connection between Tampa and Tokyo. To show performance, we used a hardware IPSec accelerator and tuned TCP/IP with SRFS on Ether's.
Naoyuki Fujita, Hirofumi Ohkawa
 SC2