Xilinx ZSTD Decompression

ZSTD example resides in L2/demos/zstd_decompress directory.

Follow build instructions to generate host executable and binary.

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

Results

Overall Resource Utilization

Table below presents resource utilization of Xilinx Zstd decompress kernel (excluding data movers) supporting Window Size of 32KB. The final Fmax achieved is 232MHz.

Flow	LUT	LUTMem	REG	BRAM	URAM
DeCompress	18.8K	153	17.2K	52	4

Decompress Kernel Resource Utilization

Kernel	LUT	LUTMem	REG	BRAM	URAM
Decompress	22.3K	153	8.1K	52	4
DmReader	3.2K	717	3.8K	10	0
DmWriter	2.6K	281	1.8K	15	0

Performance Data

Topic	Best Kernel Throughput
Decompression	783 MB/s
Average Compression Ratio	2.78 (Silesia Corpus)

[*]	Decompression uses feasibile options (Bitwidth: 32bit, Window Size: 32KB)

Executable Usage:

1. To execute single file for decompression : ./build/xil_zlib -dx ./build/xclbin_<xsa_name>_<TARGET mode>/compress_decompress.xclbin -d <compressed file_name>

2. To decompress multiple files : ./build/xil_zlib -dx ./build/xclbin_<xsa_name>_<TARGET mode>/compress_decompress.xclbin -l <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-sx-l]
     --help,                 -h      Print Help Options   Default: [false]
     --decompress,           -d      Decompress
     --decompress_xclbin,    -dx     Decompress XCLBIN
     --file_list,            -l      List of Input Files