Performance Examples

List of examples that cover performance related aspect.

Examples Table :

Example	Description	Key Concepts/Keywords
axi_burst_performance	This is an AXI Burst Performance check design. It measures the time it takes to write a buffer into DDR or read a buffer from DDR. The example contains 2 sets of 6 kernels each: each set having a different data width and each kernel having a different burst_length and num_outstanding parameters to compare the impact of these parameters on effective throughput.
hbm_bandwidth	This is a HBM bandwidth check design. Design contains 3 compute units of a kernel which has access to all HBM pseudo-channels (0:31). Host application allocate buffer into all HBM banks and run these 3 compute units concurrently and measure the overall bandwidth between Kernel and HBM Memory.
hbm_bandwidth_pseudo_random	This is a HBM bandwidth example using a pseudo random 1024 bit data access pattern to mimic Ethereum Ethash workloads. The design contains 3 compute units of a kernel, reading 1024 bits from a pseudo random address in each of 2 pseudo channels and writing the results of a simple mathematical operation to a pseudo random address in 2 other pseudo channels. To maximize bandwidth the pseudo channels are used in P2P like configuration - See https://developer.xilinx.com/en/articles/maximizing-memory-bandwidth-with-vitis-and-xilinx-ultrascale-hbm-devices.html for more information on HBM memory access configurations. The host application allocates buffers in 12 HBM banks and runs the compute units concurrently to measure the overall bandwidth between kernel and HBM Memory.	Key Concepts High Bandwidth Memory Multiple HBM Pseudo-channels Random Memory Access Linear Feedback Shift Register Keywords HBM XCL_MEM_TOPOLOGY cl_mem_ext_ptr_t
host_global_bandwidth	Host to global memory bandwidth test
host_memory_bandwidth	This is host memory bandwidth example.	Key Concepts host memory bandwidth address translation unit Keywords XCL_MEM_EXT_HOST_ONLY HOST[0]
host_memory_bandwidth_xrt	This is host memory bandwidth example to describe host memory and kernel bandwidth test using native xrt api's.	Key Concepts host memory bandwidth address translation unit Keywords host_only HOST[0]
iops_test_xrt	This is simple test design to measure Input/Output Operations per second. In this design, a simple kernel is enqueued many times and measuring overall IOPS using XRT native api's.	Key Concepts Input/Output Operations per second
kernel_global_bandwidth	Bandwidth test of global to local memory.
p2p_fpga2fpga_bandwidth	This is simple example to explain performance bandwidth for P2P transfer between two FPGA devices.	Key Concepts P2P Multi-FPGA Execution XDMA Keywords XCL_MEM_EXT_P2P_BUFFER