Xlinx Snappy Streaming Decompression

Snappy Compress Streaming example resides in L2/tests/snappy_dec_streaming_parallelByte8 directory.

Follow build instructions to generate host executable and binary.

The binary host file generated is named as xil_snappy_decompress_streaming and it is present in ./build directory.

Executable Usage

  1. To execute single file for decompression : ./build/xil_snappy_decompress_streaming  -xbin ./build/xclbin_<xsa_name>_<TARGET mode>/decompress_streaming.xclbin -d <input file_name>

  2. To execute multiple files for decompression : ./build/xil_snappy_decompress_streaming  -xbin ./build/xclbin_<xsa_name>_<TARGET mode>/decompress_streaming.xclbin -dfl <files.list>

    • <files.list>: Contains various file names with current path

The usage of the generated executable is as follows:

Usage: application.exe -[-h-d-dfl-xbin-id]
       --help,                -h        Print Help Options
       --decompress,          -d        Decompress
       --decompress_list,     -dfl      Decompress List of compressed Input Files
       --max_cr,              -mcr      Maximum CR                                            Default: [10]
       --xclbin,              -xbin     XCLBIN
       --device_id,           -id       Device ID                                             Default: [0]
       --block_size,          -B        Compress Block Size [0-64: 1-256: 2-1024: 3-4096]     Default: [0]

Resource Utilization

Table below presents resource utilization of Xilinx Snappy Streaming Decompression kernels. The final Fmax achieved is 300MHz

Flow LUT LUTMem REG BRAM URAM
Decompress 8.8K 315 6K 0 4

Performance Data

Table below presents kernel throughput achieved for a single compute unit.

Topic Results
Decompression Throughput 1.97 GB/s