warps and threads configuration: FPGA testing

[kmzaja]

I have built FPGA image with 1 and 2 cores.
PREFIX=build_<#>c PLATFORM=xilinx_u280_gen3x16_xdma_1_202211_1 TARGET=hw NUM_CORES=<1/2> make

When I run the sample tests, I give different configuration of threads and warps to observe the change in test results.
TARGET=hw FPGA_BIN_DIR=<build_dir>/bin --cores=<1/2> --threads=<#> --warps=<#> --rebuild=1 --app=vecadd --driver=xrt

The test results almost remain the same with different no. of warps and threads configuration almost as it is not being configured at all. Is this the expected behavior or is there something I am missing. Atleast with rtlsim and simx drivers, the test results change with different configuration settings?
While building FPGA image, there is no option of generating specific NUM_WARPS and/or NUM_THREADS.