Power analysis¶

SDP power analysis¶

• TR_2023_06_sdp_Power_Analysis.pptx

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 EDA_PA_basic_III.pptx

• Check glitch power optimization in detail 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 Tcl_basic_command.pptx
• "extract_toggle_activity -format saif -file file.saif" command for Pin setting logic (From D叩D叩 extract_toggle_activity.docx "report_toggle_activity" random crash fix experience (From D叩D叩 report_toggle_activity.docx
• About VCD background 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: after fix, copy fix to hongtu branch repository and submit {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¶

• 1991_Najm_Transition delay, a new measure of activity in digital circuits.pdf
• 1994_Chou_Estimation of Circuit Activity Considering Signal Correlations and simultaneous Switching.pdf
• 1994_Kappor_Improving the Accuracy of Circuit Activity Measurement.pdf
• 1997_Lim_a statistical approach.pdf
• 1999_hashimoto_a practical gate resizing technique considering glitch reduction for low power design.pdf
• 2006_Lamoureux_Activity Estimation for Field-Programmable Gate Arrays.pdf

Liberty Power Calculation (Jeff)¶

• Giga-DA Liberty Power Calculation.pptx
• Giga-DA NLPM Calculation.pptx

High-level power estimation¶