Power analysis » History » Revision 5
Revision 4 (jun chen, 03/27/2025 12:03 AM) → Revision 5/7 (jun chen, 03/27/2025 12:06 AM)
# Power analysis ## SDP [[SDP power analysis attachment:"TR_2023_06_sdp_Power_Analysis.pptx" analysis]] ## [[Usage model]] {also debug, annotation, correlation methods) ## [[Debugging skill]] ## [[Power save restore cache]] ## [[USDB support]] ## Pre-request * Make sure you have already familiar with VP usage model: [[New_hire_training(PV_PE_AE)]] ## Glitch and switching activity * Check power analysis on switching activity attachment:"EDA_PA_basic_III.pptx" * Check glitch power optimization in detail attachment:"GlitchPower_Optimization.pptx" 700 ## Simple QA * Why internal power is negative (From D叩D叩D https://www.cnblogs.com/lelin/p/11412133.html * TCl beginner's manual attachment:"Tcl_basic_command.pptx" * "extract_toggle_activity -format saif -file file.saif" command for Pin setting logic (From D叩D叩 attachment:"extract_toggle_activity.docx" "report_toggle_activity" random crash fix experience (From D叩D叩 attachment:"report_toggle_activity.docx" * About VCD background attachment:"vcd.pptx" * debug utility with sanity check on TR, SWA, pow ``` // obsolete set_app_var ta debug_power 2 // new usage set_app_var pow debug 20 // will perform sanity check report_power_analysis // will show calculation procedure report_power_calculation ``` * Debug power issue from RS side: {DD RS DD RS RocSyn 相叩) Step 0: follow this link to build local RS repository: http://10.30.200.21:8088/projects/hongtu-emir/wiki/TOP_NEWS_%E4%B8%B4%E6%97%B6%E7%BD%AE%E9%A1%B6 编田和叩行叩辑叩DDDRocSyn (选叩branch syn_dev): http://10.30.200.21:8088/projects/hongtu-logicsynth/wiki/Build_Run Steo 1: setup golden RS and environment: **NOTE: <u>after fix, copy fix to hongtu branch repository and submit</u> {RS will regularly move code from hongtu to syndev branch)** 如田碰叩license 问叩D叩D ~yzsun/.cshrc_user D叩D ``` // central RS build: /ci—builds/syn—opt—rhel6/latest/bin/rhel6-64/RS // Or, you can use alias from /rndl/llchen/newhire—training/envsetup/.cshrc—user // and run below command to get local link to latest RS build getRS // Set necessary environment: setenv SYN—PV—PAT: /reg/db/rocsyn // Most of the RS tickets in /rndl/issues/ticket—number ``` * SWA default valueD ``` defaultDsignal toggle rate D 0.1 clkDD 2 DDDDtoggle rateDDD set_app_var ta power_default_signal_toggle_rate 0.1 叩DDDDDD叩 DDDDDDDDDDDDDDD叩D set_switching_activity -clear set_switching_activity -clock_net -number_of_toggles 2 -period_of_clock 2 set_switching_activity -signal_net -number_of_tiggles 0.l5 -period_of_clock 2 ``` ## Switching activity, glitch algorithm paper * attachment:"1991_Najm_Transition delay, a new measure of activity in digital circuits.pdf" * attachment:"1994_Chou_Estimation of Circuit Activity Considering Signal Correlations and simultaneous Switching.pdf" * attachment:"1994_Kappor_Improving the Accuracy of Circuit Activity Measurement.pdf" * attachment:"1997_Lim_a statistical approach.pdf" * attachment:"1999_hashimoto_a practical gate resizing technique considering glitch reduction for low power design.pdf" * attachment:"2006_Lamoureux_Activity Estimation for Field-Programmable Gate Arrays.pdf" ## Liberty Power Calculation (Jeff) * attachment:"Giga-DA Liberty Power Calculation.pptx" * attachment:"Giga-DA NLPM Calculation.pptx" ## [[High-level power estimation]]