It is a pleasure to write a recommendation letter for Nucleodyne systems. Nucleodyne Systems has been doing business with our company for several years. They have an extremely talented group of people, mostly from premier institutes of India. Professionally, they are methodical, motivated and consistently exceed our expectations. Their dedication to product support is also commendable, they do not hesitate to provide support to our international customers, even in the early hours in the morning. I can highly recommend them to any company who will be looking for a storage systems development partner

Barbara Nelson, CEO and Chairman, NeoScale Systems

Kallol and his team have done excellent work for my company in a very short amount of time. He goes above and beyond every time. His depth of knowledge in Linux and u-boot is excellent. He also helped us get over some hardware issues. It is a pleasure working with Nucleodyne. Top qualities: Expert, Good Value, On Time

Lead Engineer, of a server development startup

" Kallol, This has been a long haul on your team's behalf and you have done a tremendous job in my opinion….

– Manager, of a large SW Development Company, on a VxWorks BSP development project.

Kallol: Excellent! Outstanding! Congrats! Thanks for all your hard work and effort. In just three weeks you've covered more ground than our first vendor did in four months. I wish we would have found you sooner as we clearly would have been better off partnering with you from the start.

Mark Otto, Manager in multi-billion dollar technology icon in bay area, Cupertino

Nucleodyne was highly recommended to us….. based on their overwhelmingly positive experience in working with them….

Senior Product Line Manager, LSI Logic

I think you have become a very strong and preferred platform partner of ours. I will run every project by you (almost a first right of refusal ). Your response time is phenomenal - ideal for a startup like ours. And the caliber of your team is top notch……

VP, Acuro Networks

White Papers

PCI Express switching technology makes a remote system's memory available
to a local system for DMA operations and load/store CPU instructions. The
latency of data access, in this system, is low compared to the traditional system where an Ethernet frame  passes
through Ethernet Host Bus Adapters and Switches.


Since a remote system’s memory is available to the  local system, applications running on one system can read and write information to another application’s address space that is running on a different system directly, without incurring any overhead of copy from one protection domain to another. No socket or any form of communication library is necessary.

TCP/IP network has inherent robustness and reliability for data transfer from one system to other. Sending Ethernet frames over PCIe bus combines low latency data transfer with robustness of TCP/IP protocol. Though connection less user data gram protocol(UDP) works well as PCIe bus also ensures reliable data transfer.

This paper describes the anatomy of data transfer from one system to another over PCI Express bus and explains issues with sending Ethernet frames over a point-point PCI Express link. Network benchmarks such as netperf show that even in non-optimized programmed IO mode of data transfer throughput reaches 9.97 Gigabits per second with low CPU utilization over  x4 Gen2 (5Gigabit/sec) PCI Express Bus. The latency numbers are close to 30k transactions/second which is as good as 10 Gigabit Ethernet cards that are available on the market.

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