Dolphin Express Software

Dolphin Express software provides a fast and transparent way for applications to dramatically improve performance. In combination with Dolphin Express hardware, application implemented with a sockets interface can take advantage of extremely low latency and high bandwidth.  Dolphin’s SuperSockets is a Berkeley compliant sockets interface that allows TCP/UDP/IP implementation to use Dolphin Express hardware

The major benefits are plug and play, high bandwidth, high availability, and much lower socket latency than network technologies like Ethernet, Infiniband and Myrinet.  Dolphin SuperSockets uses Dolphin Express Hardware remote memory access to implement a fast and reliable connection. An overview of the technology can be found in the Dolphin SuperSockets brochure. Technical details can be found in the Dolphin Express socket whitepaper.

 

Key Product Features

  • Enables standard sockets to utilize Dolphin Express hardware as a transport without modification
  • No OS patches or application modifications required.  Just install and run
  • Supports multiple adapters per host for increased fault tolerance and speed
  • Both TCP and UDP supported
  • Includes local loopback socket acceleraton up to 10x
  • Automatic fail-over to redundant adapter in the case of network failure
  • Transparent Fail-over to Ethernet if the Dolphin Express connection is down.  Fail forward to Dolphin Express when the problem has been corrected
  • Supports hot-pluggable links for high availability operation
  • Easy to install
  • Supports both user space and kernel space clients
  • Full support for socket inheritance/duplication
  • Field prooven for various MPI libraries, MySQL and Oracle RAC
  • Open source, available under LGPL/GPL

Socket latency

Real benchmarks shows that a complete 1 byte socket send - socket receive is completed in 1.99us (Full round-trip in 3.98us). As far as we know, this is a new world record and appr. 25x times better than regular Gigabit Ethernet.

Worldclass Low latency compared to GigEthernet or Infiniband

 

Socket Throughput

Benchmarks using netperf shows more than 1321 MegaBytes/s sustained (10575 megabit/s) throughput using standard TCP_STREAM sockets over one single DXH adapter card running in x8 configuration.

 

 

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