ZYNQ SSE – Benchmark for the Avnet Mini-ITX

This Technical Brief shows the Benchmark results you will see after correctly setting up the system as shown in the techtip: Zynq SATA Storage Extension.

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Block Diagram

The block diagram shown below gives an overview over the Zynq SSE reference design: Within the Zynq Programmable Logic (PL) the MLE storage micro-architecture instantiates the DMA and the SATA Host Controller IP blocks. The storage micro-architecture itself interfaces with the Zynq Processing System (PS) via the high-performance AXI HP0 slave port. The ARM A9 in the PS runs Xilinx PetaLinux and the SATA Linux kernel driver.


Implementation Details
Design TypePS + PL
SW TypeLinux (Petalinux)
CPUs2 CPUs 700 MHz
Boards/ToolsAvnet Mini ITX Z100
Xilinx Tools VersionVivado 2014.1, PETALINUX 2013-2
Other DetailsSamsung 840 SSD(including Cable and Power Supply), SD-Card
Address Map
Base AddressSizeInterface
SATA IP0x410000004KS AXI
DMA IP0x410100004KS AXI, M AXI
Files Provided
BOOT.binCompilation of Bitstream, FSBL and U-Boot
Image.ubLinux Ramdisk Image

Step by Step Instructions

In front of Benchmarking the System, the Tech Tip “Zynq- Sata Storage Tech Tip” should be executed to have a working system. For Benchmarking the System, a tool called FIO is used. FIO is a tool that will spawn a number of threads or processes doing a particular type of I/O action as specified by the user. The typical use of FIO is to write a job file matching the I/O load one wants to simulate. We will now execute FIO with different Block sizes to see the impact on the Read and Write speeds of the system. Apply the following commands to the running SATA system, varying the Block size by using different values from 4k to 16M.

fio –ioengine=sync –direct=1 –rw=read –runtime=10 –filename=/dev/sda –size=1g –name=job1 –numjobs=4 –bs=4k
fio –ioengine=sync –direct=1 –rw=write –runtime=10 –filename=/dev/sda –size=1g –name=job1 –numjobs=4 –bs=4k

Expected Results

The user should see a Performance (given the right SSD) as shown in the Graph below:

Figure 1: Benchmark on a -2 FPGA at 700 MHZ CPU speed

Team MLE has spent significant efforts to try and test all aspects of Zynq SSE. If you feel that you encounter something not right, or if you do have any questions, please do not hesitate to contact us.

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MLE (Missing Link Electronics) is offering technologies and solutions for Domain-Specific Architectures, which focus on heterogeneous computing using FPGAs. MLE is headquartered in Silicon Valley with offices in Neu-Ulm and Berlin, Germany.


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