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Update slides
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@ -6,17 +6,24 @@ all: presenter_demo.dsk
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presenter_demo.dsk: PRESENTER_DEMO \
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TITLE.HGR PLASMA_DPOSV.HGR \
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RAPL_MICRO.HGR \
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NUM.SHAPE MMM
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RAPL_MICRO.HGR WATTSUP.HGR \
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NUM.SHAPE MMM LOAD_DEMO
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../dos33 presenter_demo.dsk SAVE A PRESENTER_DEMO
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../dos33 presenter_demo.dsk SAVE B TITLE.HGR
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../dos33 presenter_demo.dsk SAVE B PLASMA_DPOSV.HGR
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../dos33 presenter_demo.dsk SAVE B RAPL_MICRO.HGR
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../dos33 presenter_demo.dsk SAVE B NUM.SHAPE
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../dos33 presenter_demo.dsk SAVE B WATTSUP.HGR
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../dos33 presenter_demo.dsk SAVE A MMM
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../dos33 presenter_demo.dsk SAVE A LOAD_DEMO
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LOAD_DEMO: load_demo.bas
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../tokenize_asoft < load_demo.bas > LOAD_DEMO
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RAPL_MICRO.HGR: rapl_micro.pcx
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WATTSUP.HGR: wattsup.pcx
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../pcx2hgr wattsup.pcx > WATTSUP.HGR
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RAPL_MICRO.HGR: rapl_micro.pcx
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../pcx2hgr rapl_micro.pcx > RAPL_MICRO.HGR
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@ -39,5 +46,5 @@ demo.bas: ../asoft_presenter info
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../asoft_presenter . > demo.bas
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clean:
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rm -f *~ *.IMG *.HGR demo.bas PRESENTER_DEMO NUM.SHAPE MMM
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rm -f *~ *.IMG *.HGR demo.bas PRESENTER_DEMO NUM.SHAPE MMM LOAD_DEMO
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@ -8,12 +8,36 @@ EMAIL
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vweaver1@eecs.utk.edu
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SLIDES
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slide_nvml_plot
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slide_wattsup_plot
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slide_rapl_intro
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slide_piotr_img
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slide_rapl_continued
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slide_rapl_more
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slide_rapl_finish
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slide_title
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slide_01_intro
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slide_02_intro
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slide_03_piotr
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slide_04_shortcomings
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slide_05_papi
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slide_06_papi_benefits
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slide_07_current_components
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slide_08_wattsup_pic
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slide_09_wattsup
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slide_10_wattsup_plot
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slide_11_rapl_intro
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slide_12_rapl_works
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slide_13_rapl_more
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slide_14_rapl_valid
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slide_15_rapl_accuracy
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slide_16_rapl_papi
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slide_17_rapl_power
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slide_18_rapl_energy
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slide_19_nvml
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slide_20_nvml_plot
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slide_21_future_papi
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slide_22_amd
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slide_23_powermon
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slide_24_user
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slide_25_measuring
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slide_26_events
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slide_27_multiple
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slide_28_questions
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slide_29_appleIIe
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slide_30_linpack
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slide_31_questions
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END_SLIDES
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5
presenter_demo/load_demo.bas
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5
presenter_demo/load_demo.bas
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10 REM LOAD BASIC PROGRAM INTO HGR2 AREA
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15 PRINT "LOADING PRESENTER DEMO TO A$4000"
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20 POKE 104,64
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30 POKE 16384,0
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40 PRINT CHR$(4);"LOAD PRESENTER_DEMO"
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11
presenter_demo/slide_01_intro
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11
presenter_demo/slide_01_intro
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40COL
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%c%Power and Energy - Why do We Care?
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* New, massive, HPC machines use
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impressive amounts of power
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* When you have 100k+ cores, saving
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a few Joules per core quickly adds up
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* To improve power/energy draw, you
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need some way of measuring it
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presenter_demo/slide_02_intro
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18
presenter_demo/slide_02_intro
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40COL
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%c%Energy/Power Measurement is Already
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%c%Possible
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Three common ways of doing this:
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* Hand-instrumenting a system by
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tapping all power inputs to CPU,
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memory, disk, etc., and using a
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data logger
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* Using a pass-through power meter
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that you plug your server into.
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Often these will log over USB
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* Estimating power/energy with a
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software model based on
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system behavior
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5
presenter_demo/slide_03_piotr
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5
presenter_demo/slide_03_piotr
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HGR
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PLASMA_DPOSV.HGR
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%c%Existing Related Work
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%c%Plasma/dposv results with
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%c%Virginia Tech's PowerPack
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14
presenter_demo/slide_04_shortcomings
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14
presenter_demo/slide_04_shortcomings
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@ -0,0 +1,14 @@
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40COL
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%c%Shortcomings of Current Methods
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* Each measurement platform has a
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different interface
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* Typically data can only be recorded
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off-line, to a separate logging
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machine, and analysis is done after
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the fact
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* Correlating energy/power with other
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performance metrics can be difficult
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15
presenter_demo/slide_05_papi
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15
presenter_demo/slide_05_papi
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@ -0,0 +1,15 @@
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40COL
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%c%Can we make this easier?
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%c%Use PAPI!
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* PAPI (Performance API) is a
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platform-independent library for
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gathering performance-related data
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* PAPI-C interface makes adding new
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power measuring components
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straightforward
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* PAPI can provide power/energy
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results in-line to running programs
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16
presenter_demo/slide_06_papi_benefits
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16
presenter_demo/slide_06_papi_benefits
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40COL
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%c%More PAPI benefits
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* One interface for all power
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measurement devices
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* Existing PAPI code and
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instrumentation can easily be
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extended to measure power
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* Existing high-level tools (Tau,
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VAMPIR, etc.) can be used with
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no changes
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* Easy to measure other performance
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metrics at same time
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8
presenter_demo/slide_07_current_components
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8
presenter_demo/slide_07_current_components
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40COL
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%c%Current PAPI Components
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* Various components are nearing
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completion
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* Code for many of them already
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available in papi.git
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3
presenter_demo/slide_08_wattsup_pic
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3
presenter_demo/slide_08_wattsup_pic
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HGR
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WATTSUP.HGR
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%c%Watt's Up Pro Meter
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presenter_demo/slide_09_wattsup
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14
presenter_demo/slide_09_wattsup
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40COL
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%c%Watt's Up Pro Features
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* Can measure 18 different values
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with 1 second resolution
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(Watts, Volts, Amps, etc.)
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* Values read over USB
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* Joules can be derived from power
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and time
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* Can only measure system-wide
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@ -61,6 +61,6 @@ START
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38 35.4
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39 35.1
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STOP
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Average Power (W) versus Time (s)
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%c%Average Power (W) versus Time (s)
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PLASMA Cholesky on Intel Core2
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%c%PLASMA Cholesky on Intel Core2
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12
presenter_demo/slide_11_rapl_intro
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12
presenter_demo/slide_11_rapl_intro
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40COL
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%c%RAPL
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* Running Average Power Limit
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* Part of an infrastructure to allow
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setting custom per-package hardware
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enforced power limits
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* User Accessible Energy/Power
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readings are a bonus feature
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of the interface
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presenter_demo/slide_12_rapl_works
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17
presenter_demo/slide_12_rapl_works
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40COL
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%c%How RAPL Works
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* RAPL is not an analog power meter
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* RAPL uses a software power model,
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running on a helper controller
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on the main chip package
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* Energy is estimated using various
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hardware performance counters,
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temperature, leakage models and I/O
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* The model is used for CPU throttling
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and turbo-boost, but the values are
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also exposed to users via a
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model-specific register (MSR)
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18
presenter_demo/slide_13_rapl_more
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18
presenter_demo/slide_13_rapl_more
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40COL
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%c%Available RAPL Readings
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* PACKAGE_ENERGY: total energy used
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by entire package
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* PP0_ENERGY: energy used by
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'Power Plane 0' which includes
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all cores and caches
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* PP1_ENERGY: on original Sandybridge
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this includes the on-chip Intel GPU
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* DRAM_ENERGY: on Sandybridge EP this
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measures DRAM energy usage.
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It is unclear whether this is just
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the interface or if it includes all
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power used by all the DIMMs too
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4
presenter_demo/slide_14_rapl_valid
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4
presenter_demo/slide_14_rapl_valid
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HGR
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RAPL_MICRO.HGR
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%c%Rotem at al. (IEEE Micro Mar/Apr 2012)
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%c%Validate Against Actual Power Readings
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19
presenter_demo/slide_15_rapl_accuracy
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19
presenter_demo/slide_15_rapl_accuracy
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40COL
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%c%RAPL Measurement Accuracy
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* Intel Documentation indicates Energy
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readings are updated roughly every
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millisecond (1kHz)
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* The hardware also reports measurement
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quanta. This can vary among processor
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releases. On our Sandybridge EP all
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Energy measurements are in multiples
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of 15.2nJ
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* Power and Energy can vary between
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identical packages on a system,
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even when running identical workloads.
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It is unclear whether this is due to
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process variation or else calibration
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17
presenter_demo/slide_16_rapl_papi
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17
presenter_demo/slide_16_rapl_papi
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40COL
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%c%RAPL PAPI Interface
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* Access to RAPL data requires reading
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a CPU MSR register.
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This requires OS support
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* Linux currently has no driver and
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likely won't for the near future
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* Linux does support an 'MSR' driver.
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Given proper read permissions, MSRs
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can be accessed via /dev/cpu/*/msr
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* PAPI uses the 'MSR' driver to gather
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RAPL values
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3
presenter_demo/slide_17_rapl_power
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3
presenter_demo/slide_17_rapl_power
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40COL
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BLAH
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3
presenter_demo/slide_18_rapl_energy
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3
presenter_demo/slide_18_rapl_energy
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40COL
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BLAH
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13
presenter_demo/slide_19_nvml
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13
presenter_demo/slide_19_nvml
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40COL
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%c%NVML
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* Recent NVIDIA GPUs support reading
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power via the NVIDIA Management
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Library (NVML)
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* On Fermi C2075 GPUs it has milliwatt
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resolution within +/- 5W and is
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updated at roughly 60Hz
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* The power reported is that for the
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entire board, GPU and memory
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@ -287,3 +287,4 @@ START
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2.66 122.18
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2.67 117.74
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STOP
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%c%MAGMA LU 10,000, Nvidia Fermi C2075
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6
presenter_demo/slide_21_future_papi
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6
presenter_demo/slide_21_future_papi
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40COL
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%c%Near-future PAPI Components
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%c%These components do not exist yet,
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%c%but support for them should be
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%c%straightforward.
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14
presenter_demo/slide_22_amd
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14
presenter_demo/slide_22_amd
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40COL
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%c%AMD Application Power Management
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* Recent AMD Family 15h processors
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report 'Current Power In Watts'
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via Processor Power in the TDP MSR
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* Support for this can be provided
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similar to RAPL
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* We just need an Interlagos system
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where someone gives us read
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permissions to /dev/cpu/*/msr
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12
presenter_demo/slide_23_powermon
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12
presenter_demo/slide_23_powermon
Normal file
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40COL
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%c%PowerMon 2
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* PowerMon 2: a custom board from RENCI
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* Plugs in-line with ATX power supply
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* Reports results over USB
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* 8 channels, 1kHz sample rate
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* We have hardware; still debugging
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14
presenter_demo/slide_24_user
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14
presenter_demo/slide_24_user
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40COL
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%c%PAPI-based Power Models
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* There's a lot of related work on
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estimating energy/power using
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performance counters
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* PAPI user-defined events can be
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used to create power models using
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existing events
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* Previous work (McKee et al.) shows
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accuracy to within 10%%
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7
presenter_demo/slide_25_measuring
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7
presenter_demo/slide_25_measuring
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40COL
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%c%Measuring using PAPI
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* Measuring Energy/Power with PAPI is
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done the same as measuring any other
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event
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19
presenter_demo/slide_26_events
Normal file
19
presenter_demo/slide_26_events
Normal file
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40COL
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%c%Listing Events
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> papi_native_avail
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...
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====================================
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Events in Component: linux-rapl
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====================================
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------------------------------------
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| PACKAGE_ENERGY:PACKAGE0
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| Energy used by chip package 0
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------------------------------------
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| PACKAGE_ENERGY:PACKAGE1
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| Energy used by chip package 1
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------------------------------------
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| DRAM_ENERGY:PACKAGE0
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| Energy used by DRAM on package 0
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------------------------------------
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...
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4
presenter_demo/slide_27_multiple
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4
presenter_demo/slide_27_multiple
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40COL
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%c%Measuring Multiple at Once
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7
presenter_demo/slide_28_questions
Normal file
7
presenter_demo/slide_28_questions
Normal file
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40COL
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%c%Questions before Digressing?
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10
presenter_demo/slide_29_appleIIe
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10
presenter_demo/slide_29_appleIIe
Normal file
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40COL
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%c%Apple IIe
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* Apple II released in 1977
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* Apple IIe Platinum released in 1987
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* 1MHz 65C02 Processor, 128kB RAM
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* 280x192, 6-color graphics
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(IIe can do DoubleHiRes)
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* Power: 18 - 20W
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12
presenter_demo/slide_30_linpack
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12
presenter_demo/slide_30_linpack
Normal file
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40COL
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%c%Linpack Results
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10x10 Matrix-matrix multiply
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START
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STOP
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HOW MANY SECONDS? 15
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133.333333 FLOP/s
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Yes I know using BASIC is unfair
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But I am too lazy to code up a
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6502 FP implementation in assembler
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7
presenter_demo/slide_31_questions
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7
presenter_demo/slide_31_questions
Normal file
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40COL
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%c%QUESTIONS?
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@ -1,2 +0,0 @@
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HGR
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PLASMA_DPOSV.HGR
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@ -1,3 +0,0 @@
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40COL
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RAPL CONTINUE
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* Is freally awesome
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@ -1,3 +0,0 @@
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40COL
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RAPL LAST
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* Is really awesome
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@ -1,4 +0,0 @@
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40COL
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#c#RAPL
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* Is really awesome
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@ -1,3 +0,0 @@
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40COL
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RAPL MORE
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* Is really awesome
|
Loading…
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Block a user