Scroll down to the Design Timing Summary section in the timing summary report. You see that rev1 has a WNS and TNS, which are both zero. This indicates that the rev1 build meets timing.
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| Design Timing Summary
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WNS(ns) TNS(ns) TNS Failing Endpoints TNS Total Endpoints WHS(ns) THS(ns) THS Failing Endpoints THS Total Endpoints WPWS(ns) TPWS(ns) TPWS Failing Endpoints TPWS Total Endpoints
------- ------- --------------------- ------------------- ------- ------- --------------------- ------------------- -------- -------- ---------------------- --------------------
0.019 0.000 0 800980 0.000 0.000 0 791764 0.000 0.000 0 353192
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The rev0 build has negative slack and fails timing while the rev1 build does not. During the Vitis compiler linker step, the rev0 and rev1 builds used different configuration files. A configuration file is used to specify additional Vitis compiler options. The rev0 build used the config.ini file with no timing closure technique options. The rev1 build used the config_2regslice.ini file, which is similar to config.ini but contains additional timing closure techniques. Both the *.ini files are located in Module_04_AI_Engine_and_PL_Integration/ folder. The next sections detail the config.ini file for the rev0 build, and then the changes made in the config_2regslice.ini for a successful rev1 build, which meets timing.