RiceNIC: A Reconfigurable and Programmable Gigabit Network Interface Card
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Transcript of RiceNIC: A Reconfigurable and Programmable Gigabit Network Interface Card
RiceNIC: A Reconfigurable and Programmable Gigabit Network Interface Card
Jeff Shafer, Dr. Scott RixnerRice Computer Architecture: http://www.cs.rice.edu/CS/Architecture
System ArchitectureSystem Architecture
Development PlatformDevelopment Platform Avnet Virtex-II Pro Development Board
Serial Port
RJ-45 Port
DDR
Virtex FPGA
Spartan FPGA
PCI InterfaceEthernet PHY
Networks are Essential!Networks are Essential! Networking is an integral part of computer systems The role of a network interface is evolving
Significant new research is changing the hardware/software interface between the operating system and the network interface card (NIC)
Researchers need a flexible NIC to study this field RiceNIC is a reconfigurable and programmable Gigabit
Ethernet NIC that meets these research needs NIC design is freely available for research/education! NIC provides significant computation and storage
resources and allows the user to customize NIC behavior in software and hardware.
Device UtilizationDevice Utilization Space for future development
Component Virtex FPGASlice Registers 9,089 / 27,392 33%4 input LUTs 11,811 / 27,392 43%BRAMs 51 / 136 37%Occupied Slices 9,164 / 13,696 66%Global Clocks 10 / 16 62%Clock Managers 5 / 8 62%Gate Count: 3,944,049
NIC FeaturesNIC Features Software Programmability
Dual 300 MHz PowerPC processors
256 MB DDR memory 2MB SRAM (accessible
from host and NIC) Serial port for debugging Descriptor control system
Hardware Acceleration MAC / DMA controllers TCP Checksum Offloading Hardware Event notification
PCI Bus (64b / 66 MHz)
DDRMemory(256 MB)
Bridge
PCI
SRAM(2 MB)
HardwareEvents
PowerPC 405Embedded Processor
(300 MHz)
PLB Bus
I-Cache(16 KB)
D-Cache(16 KB)
BRAM(32 KB)
Virtex FPGA
Spartan FPGA
GigabitEthernet
PowerPC 405Embedded Processor
(300 MHz)
I-Cache(16 KB)
D-Cache(16 KB)
Scratchpad(2 KB)
Back-EndDMA
SRAMController
Bridge
Front-EndDMA
DDRControllerUART
RS-232Serial
FPGA Development Board
GigabitMAC
PHY
PerformancePerformance RiceNIC TCP stream throughput
compared to commercial NIC
Software DesignSoftware Design PowerPC processor runs custom
packet-handling firmware Interfaces with MAC to
send/receive packets Interfaces with DDR to store
bulk frame data Interfaces with DMA engine
to transfer data to/from host Custom Linux and FreeBSD
device drivers
Virtex FPGA PlacementVirtex FPGA Placement
Ethernet MAC
DDR Controller
PCI DMAEngine
NIC Control & Data Bus
PowerPCProcessors