Multi Channel DMA Intel® FPGA IP for PCI Express Design Example User Guide

Download
ID 683517
Date 4/29/2022
Public
Document Table of Contents

3.5.2.3.4. Testing Bitstream Configuration beyond 256 Channels

Note: In case, if the *.sof file generated with the number of channels > 256, please follow this procedure.
  1. Enable following macros in user/common/mk/common.mk
    __cflags += -DIFC_MCDMA_DIDF
    __cflags += -UIFC_MCDMA_SINGLE_FUNC
    
  2. Go to this location:
    cd user/cli/perfq_app/
  3. Perform the following command:
    make clean && make all
  4. Run the test.
    Configuration:
    • 1 channel (-c 1)
    • Packet gen bidirectional (-z)
    • Payload length of 64 bytes in each descriptor (-p 64)
    • Transfer the data 5 seconds (-l 2)
    • Number of threads that needs to be used (-a 4)
    • Dump the progress logs every second (-d 1)
    • File size (-f 64)
    • Batch size (-x 64)
    Command for pktgen:
    ./perfq_app -p 64 -l 2 -z -d 1\ 
    -c 2048 -a 4 -f 64 -x64 -n
    Command for loopback:
    ./perfq_app -p 64 -l 2 -i -d 1 -c 2048\ 
    -a 4 -f 1 - x64

    Note:

    1. Currently, in DIDF mode, single page is supported.
    2. Simultaneous process, currently cannot be supported in DIDF mode. You can run one process with 2k channels.

Did you find the information on this page useful?

Characters remaining:

Feedback Message