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Update slides

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This commit is contained in:
Vince Weaver 2012-05-10 23:59:02 -04:00
parent 9094ffafbb
commit 772f596bb9
39 changed files with 372 additions and 28 deletions
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13
presenter_demo/Makefile
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@ -6,15 +6,22 @@ all: presenter_demo.dsk
presenter_demo.dsk: PRESENTER_DEMO \
TITLE.HGR PLASMA_DPOSV.HGR \
RAPL_MICRO.HGR \
NUM.SHAPE MMM
RAPL_MICRO.HGR WATTSUP.HGR \
NUM.SHAPE MMM LOAD_DEMO
../dos33 presenter_demo.dsk SAVE A PRESENTER_DEMO
../dos33 presenter_demo.dsk SAVE B TITLE.HGR
../dos33 presenter_demo.dsk SAVE B PLASMA_DPOSV.HGR
../dos33 presenter_demo.dsk SAVE B RAPL_MICRO.HGR
../dos33 presenter_demo.dsk SAVE B NUM.SHAPE
../dos33 presenter_demo.dsk SAVE B WATTSUP.HGR
../dos33 presenter_demo.dsk SAVE A MMM
../dos33 presenter_demo.dsk SAVE A LOAD_DEMO
LOAD_DEMO: load_demo.bas
../tokenize_asoft < load_demo.bas > LOAD_DEMO
WATTSUP.HGR: wattsup.pcx
../pcx2hgr wattsup.pcx > WATTSUP.HGR
RAPL_MICRO.HGR: rapl_micro.pcx
../pcx2hgr rapl_micro.pcx > RAPL_MICRO.HGR
@ -39,5 +46,5 @@ demo.bas: ../asoft_presenter info
../asoft_presenter . > demo.bas
clean:
rm -f *~ *.IMG *.HGR demo.bas PRESENTER_DEMO NUM.SHAPE MMM
rm -f *~ *.IMG *.HGR demo.bas PRESENTER_DEMO NUM.SHAPE MMM LOAD_DEMO

38
presenter_demo/info
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@ -8,12 +8,36 @@ EMAIL
vweaver1@eecs.utk.edu
SLIDES
slide_nvml_plot
slide_wattsup_plot
slide_rapl_intro
slide_piotr_img
slide_rapl_continued
slide_rapl_more
slide_rapl_finish
slide_title
slide_01_intro
slide_02_intro
slide_03_piotr
slide_04_shortcomings
slide_05_papi
slide_06_papi_benefits
slide_07_current_components
slide_08_wattsup_pic
slide_09_wattsup
slide_10_wattsup_plot
slide_11_rapl_intro
slide_12_rapl_works
slide_13_rapl_more
slide_14_rapl_valid
slide_15_rapl_accuracy
slide_16_rapl_papi
slide_17_rapl_power
slide_18_rapl_energy
slide_19_nvml
slide_20_nvml_plot
slide_21_future_papi
slide_22_amd
slide_23_powermon
slide_24_user
slide_25_measuring
slide_26_events
slide_27_multiple
slide_28_questions
slide_29_appleIIe
slide_30_linpack
slide_31_questions
END_SLIDES

5
presenter_demo/load_demo.bas Normal file
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@ -0,0 +1,5 @@
10 REM LOAD BASIC PROGRAM INTO HGR2 AREA
15 PRINT "LOADING PRESENTER DEMO TO A$4000"
20 POKE 104,64
30 POKE 16384,0
40 PRINT CHR$(4);"LOAD PRESENTER_DEMO"

11
presenter_demo/slide_01_intro Normal file
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@ -0,0 +1,11 @@
40COL
%c%Power and Energy - Why do We Care?
* New, massive, HPC machines use
impressive amounts of power
* When you have 100k+ cores, saving
a few Joules per core quickly adds up
* To improve power/energy draw, you
need some way of measuring it

18
presenter_demo/slide_02_intro Normal file
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@ -0,0 +1,18 @@
40COL
%c%Energy/Power Measurement is Already
%c%Possible
Three common ways of doing this:
* Hand-instrumenting a system by
tapping all power inputs to CPU,
memory, disk, etc., and using a
data logger
* Using a pass-through power meter
that you plug your server into.
Often these will log over USB
* Estimating power/energy with a
software model based on
system behavior

5
presenter_demo/slide_03_piotr Normal file
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@ -0,0 +1,5 @@
HGR
PLASMA_DPOSV.HGR
%c%Existing Related Work
%c%Plasma/dposv results with
%c%Virginia Tech's PowerPack

14
presenter_demo/slide_04_shortcomings Normal file
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@ -0,0 +1,14 @@
40COL
%c%Shortcomings of Current Methods
* Each measurement platform has a
different interface
* Typically data can only be recorded
off-line, to a separate logging
machine, and analysis is done after
the fact
* Correlating energy/power with other
performance metrics can be difficult

15
presenter_demo/slide_05_papi Normal file
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@ -0,0 +1,15 @@
40COL
%c%Can we make this easier?
%c%Use PAPI!
* PAPI (Performance API) is a
platform-independent library for
gathering performance-related data
* PAPI-C interface makes adding new
power measuring components
straightforward
* PAPI can provide power/energy
results in-line to running programs

16
presenter_demo/slide_06_papi_benefits Normal file
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@ -0,0 +1,16 @@
40COL
%c%More PAPI benefits
* One interface for all power
measurement devices
* Existing PAPI code and
instrumentation can easily be
extended to measure power
* Existing high-level tools (Tau,
VAMPIR, etc.) can be used with
no changes
* Easy to measure other performance
metrics at same time

8
presenter_demo/slide_07_current_components Normal file
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@ -0,0 +1,8 @@
40COL
%c%Current PAPI Components
* Various components are nearing
completion
* Code for many of them already
available in papi.git

3
presenter_demo/slide_08_wattsup_pic Normal file
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@ -0,0 +1,3 @@
HGR
WATTSUP.HGR
%c%Watt's Up Pro Meter

14
presenter_demo/slide_09_wattsup Normal file
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@ -0,0 +1,14 @@
40COL
%c%Watt's Up Pro Features
* Can measure 18 different values
with 1 second resolution
(Watts, Volts, Amps, etc.)
* Values read over USB
* Joules can be derived from power
and time
* Can only measure system-wide

4
presenter_demo/slide_wattsup_plot → presenter_demo/slide_10_wattsup_plot
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@ -61,6 +61,6 @@ START
38 35.4
39 35.1
STOP
Average Power (W) versus Time (s)
%c%Average Power (W) versus Time (s)
PLASMA Cholesky on Intel Core2
%c%PLASMA Cholesky on Intel Core2

12
presenter_demo/slide_11_rapl_intro Normal file
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@ -0,0 +1,12 @@
40COL
%c%RAPL
* Running Average Power Limit
* Part of an infrastructure to allow
setting custom per-package hardware
enforced power limits
* User Accessible Energy/Power
readings are a bonus feature
of the interface

17
presenter_demo/slide_12_rapl_works Normal file
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@ -0,0 +1,17 @@
40COL
%c%How RAPL Works
* RAPL is not an analog power meter
* RAPL uses a software power model,
running on a helper controller
on the main chip package
* Energy is estimated using various
hardware performance counters,
temperature, leakage models and I/O
* The model is used for CPU throttling
and turbo-boost, but the values are
also exposed to users via a
model-specific register (MSR)

18
presenter_demo/slide_13_rapl_more Normal file
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@ -0,0 +1,18 @@
40COL
%c%Available RAPL Readings
* PACKAGE_ENERGY: total energy used
by entire package
* PP0_ENERGY: energy used by
'Power Plane 0' which includes
all cores and caches
* PP1_ENERGY: on original Sandybridge
this includes the on-chip Intel GPU
* DRAM_ENERGY: on Sandybridge EP this
measures DRAM energy usage.
It is unclear whether this is just
the interface or if it includes all
power used by all the DIMMs too

4
presenter_demo/slide_14_rapl_valid Normal file
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@ -0,0 +1,4 @@
HGR
RAPL_MICRO.HGR
%c%Rotem at al. (IEEE Micro Mar/Apr 2012)
%c%Validate Against Actual Power Readings

19
presenter_demo/slide_15_rapl_accuracy Normal file
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@ -0,0 +1,19 @@
40COL
%c%RAPL Measurement Accuracy
* Intel Documentation indicates Energy
readings are updated roughly every
millisecond (1kHz)
* The hardware also reports measurement
quanta. This can vary among processor
releases. On our Sandybridge EP all
Energy measurements are in multiples
of 15.2nJ
* Power and Energy can vary between
identical packages on a system,
even when running identical workloads.
It is unclear whether this is due to
process variation or else calibration

17
presenter_demo/slide_16_rapl_papi Normal file
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@ -0,0 +1,17 @@
40COL
%c%RAPL PAPI Interface
* Access to RAPL data requires reading
a CPU MSR register.
This requires OS support
* Linux currently has no driver and
likely won't for the near future
* Linux does support an 'MSR' driver.
Given proper read permissions, MSRs
can be accessed via /dev/cpu/*/msr
* PAPI uses the 'MSR' driver to gather
RAPL values

3
presenter_demo/slide_17_rapl_power Normal file
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@ -0,0 +1,3 @@
40COL
BLAH

3
presenter_demo/slide_18_rapl_energy Normal file
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@ -0,0 +1,3 @@
40COL
BLAH

13
presenter_demo/slide_19_nvml Normal file
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@ -0,0 +1,13 @@
40COL
%c%NVML
* Recent NVIDIA GPUs support reading
power via the NVIDIA Management
Library (NVML)
* On Fermi C2075 GPUs it has milliwatt
resolution within +/- 5W and is
updated at roughly 60Hz
* The power reported is that for the
entire board, GPU and memory

1
presenter_demo/slide_nvml_plot → presenter_demo/slide_20_nvml_plot
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@ -287,3 +287,4 @@ START
2.66 122.18
2.67 117.74
STOP
%c%MAGMA LU 10,000, Nvidia Fermi C2075

6
presenter_demo/slide_21_future_papi Normal file
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@ -0,0 +1,6 @@
40COL
%c%Near-future PAPI Components
%c%These components do not exist yet,
%c%but support for them should be
%c%straightforward.

14
presenter_demo/slide_22_amd Normal file
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@ -0,0 +1,14 @@
40COL
%c%AMD Application Power Management
* Recent AMD Family 15h processors
report 'Current Power In Watts'
via Processor Power in the TDP MSR
* Support for this can be provided
similar to RAPL
* We just need an Interlagos system
where someone gives us read
permissions to /dev/cpu/*/msr

12
presenter_demo/slide_23_powermon Normal file
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@ -0,0 +1,12 @@
40COL
%c%PowerMon 2
* PowerMon 2: a custom board from RENCI
* Plugs in-line with ATX power supply
* Reports results over USB
* 8 channels, 1kHz sample rate
* We have hardware; still debugging

14
presenter_demo/slide_24_user Normal file
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@ -0,0 +1,14 @@
40COL
%c%PAPI-based Power Models
* There's a lot of related work on
estimating energy/power using
performance counters
* PAPI user-defined events can be
used to create power models using
existing events
* Previous work (McKee et al.) shows
accuracy to within 10%%

7
presenter_demo/slide_25_measuring Normal file
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@ -0,0 +1,7 @@
40COL
%c%Measuring using PAPI
* Measuring Energy/Power with PAPI is
done the same as measuring any other
event

19
presenter_demo/slide_26_events Normal file
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@ -0,0 +1,19 @@
40COL
%c%Listing Events
> papi_native_avail
...
====================================
Events in Component: linux-rapl
====================================
------------------------------------
| PACKAGE_ENERGY:PACKAGE0
| Energy used by chip package 0
------------------------------------
| PACKAGE_ENERGY:PACKAGE1
| Energy used by chip package 1
------------------------------------
| DRAM_ENERGY:PACKAGE0
| Energy used by DRAM on package 0
------------------------------------
...

4
presenter_demo/slide_27_multiple Normal file
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@ -0,0 +1,4 @@
40COL
%c%Measuring Multiple at Once

7
presenter_demo/slide_28_questions Normal file
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@ -0,0 +1,7 @@
40COL
%c%Questions before Digressing?

10
presenter_demo/slide_29_appleIIe Normal file
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@ -0,0 +1,10 @@
40COL
%c%Apple IIe
* Apple II released in 1977
* Apple IIe Platinum released in 1987
* 1MHz 65C02 Processor, 128kB RAM
* 280x192, 6-color graphics
(IIe can do DoubleHiRes)
* Power: 18 - 20W

12
presenter_demo/slide_30_linpack Normal file
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@ -0,0 +1,12 @@
40COL
%c%Linpack Results
10x10 Matrix-matrix multiply
START
STOP
HOW MANY SECONDS? 15
133.333333 FLOP/s
Yes I know using BASIC is unfair
But I am too lazy to code up a
6502 FP implementation in assembler

7
presenter_demo/slide_31_questions Normal file
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@ -0,0 +1,7 @@
40COL
%c%QUESTIONS?

2
presenter_demo/slide_piotr_img
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@ -1,2 +0,0 @@
HGR
PLASMA_DPOSV.HGR

3
presenter_demo/slide_rapl_continued
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@ -1,3 +0,0 @@
40COL
RAPL CONTINUE
* Is freally awesome

3
presenter_demo/slide_rapl_finish
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@ -1,3 +0,0 @@
40COL
RAPL LAST
* Is really awesome

4
presenter_demo/slide_rapl_intro
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@ -1,4 +0,0 @@
40COL
#c#RAPL
* Is really awesome

3
presenter_demo/slide_rapl_more
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@ -1,3 +0,0 @@
40COL
RAPL MORE
* Is really awesome