IOPS Fast Adapter (XRT Native API’s)

This is simple test design to measure Input/Output Operations per second using Fast Adapter. In this design, a simple kernel is enqueued many times and overall IOPS is measured using XRT native api’s.

KEY CONCEPTS: Input/Output Operations per second, Fast Adapter

KEYWORDS: nextDescriptorAddr

This is simple design to measure Input/Output Operations per second using Fast Adapter. For measuring the IOPS we run kernel 1 Million times and capture the time it takes to complete -

We need to make sure Kernel Domain Scheduler(KDS) is enabled. Following are the steps to enable KDS :

sudo rmmod xocl
sudo modprobe xocl kds_mode=1

Following is the real log reported while running the design on U50 platform:

Open the device0
Load the xclbin ./build_dir.hw.xilinx_u50_gen3x16_xdma_4_202020_1/hello.xclbin
Allocated commands, expect 10000, created 10000
Commands:      10 iops: 196078
Commands:      50 iops: 467290
Commands:     100 iops: 540541
Commands:     200 iops: 638978
Commands:     500 iops: 652742
Commands:    1000 iops: 675676
Commands:    1500 iops: 676590
Commands:    2000 iops: 677736
Commands:    3000 iops: 681973
Commands:    5000 iops: 685683
Commands:   10000 iops: 681663
Commands:   50000 iops: 701784
Commands:  100000 iops: 708175
Commands:  500000 iops: 713502
Commands: 1000000 iops: 714332
TEST PASSED

EXCLUDED PLATFORMS:

  • All NoDMA Platforms, i.e u50 nodma etc

  • All Embedded Zynq Platforms, i.e zc702, zcu102 etc

  • All Versal Platforms, i.e vck190 etc

  • Alveo U50 gen3x4

  • Alveo U200

  • Alveo U250

  • Alveo U55

  • All Platforms with 2019 Version

  • Alveo U280

  • Samsung U.2 SmartSSD

DESIGN FILES

Application code is located in the src directory. Accelerator binary files will be compiled to the xclbin directory. The xclbin directory is required by the Makefile and its contents will be filled during compilation. A listing of all the files in this example is shown below

src/hello.cpp
src/host.cpp

Access these files in the github repo by clicking here.

COMMAND LINE ARGUMENTS

Once the environment has been configured, the application can be executed by

./iops_fast_adapter_xrt -x <hello XCLBIN>