GEOS-5 Run-Time Characteristics: Difference between revisions

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== Performance at various resolutions ==
{| border="1"
{| border="1"
|+ '''Results for a 10-day AMIP-Style simulation at 72 levels using climatological aerosols and running Ganymed-1_0 on Westmere CPUs'''


! scope="col" | Application (10-day AMIP-Style simulation using climatological aerosols)
! scope="col" | Resolution  
! scope="col" | Resolution  
! scope="col" | CPUs (typical)
! scope="col" | CPUs (typical)
! scope="col" | WallClock Hours
! scope="col" | WallClock Time (Hours)
! scope="col" | CPU Hours (Westmere)
! scope="col" | CPU Time (Hours)
! scope="col" | Data Volume (typical)
! scope="col" | Data Volume (Gbytes)
! scope="col" | Notes
! scope="col" | Notes


|-
|-
! scope="row" | GEOS-5 AGCM (Ganymed Tag, FV Lat/Lon Dynamical Core)


| b72 (2-deg)
 
|48
! scope="row" |b72 (2-deg)
|0.25
! scope="row" |48
|12  
! scope="row" |0.25
|3 Gb
! scope="row" |12
! scope="row" |3
|Highly depends on fields saved
|Highly depends on fields saved
|-
|-


! scope="row" | GEOS-5 AGCM (Ganymed Tag, FV Lat/Lon Dynamical Core)


|c72 (1-deg)
! scope="row" |c72 (1-deg)
|96
! scope="row" |96
|0.5  
! scope="row" |0.5  
|48  
! scope="row" |48
|13  
! scope="row" |13
|Highly depends on fields saved
|Highly depends on fields saved
|-
|-


! scope="row" | GEOS-5 AGCM (Ganymed Tag, FV Lat/Lon Dynamical Core)


|d72 (0.5-deg)
 
|384
! scope="row" |d72 (0.5-deg)
|1
! scope="row" |384
|384
! scope="row" |1
|52 Gb
! scope="row" |384
! scope="row" |52
|Highly depends on fields saved
|Highly depends on fields saved
|-
|-


! scope="row" | GEOS-5 AGCM (Ganymed Tag, FV Lat/Lon Dynamical Core)


|e72 (0.25-deg)
 
|768
! scope="row" |e72 (0.25-deg)
|4.75  
! scope="row" |768
|3648  
! scope="row" |4.75  
|288 Gb
! scope="row" |3648  
! scope="row" |288
|Highly depends on fields saved
|Highly depends on fields saved
|-
|-


! scope="row" | GEOS-5 AGCM (Ganymed Tag, FV Cubed-Sphere Dynamical Core)
 
| c720 x 72L (14-km)
! scope="row" |c720 x 72L (14-km)
| 1350
! scope="row" |1350
|8  
! scope="row" |8
|10800
! scope="row" |10800
|832 Gb
! scope="row" |832
|Highly depends on fields saved
|Highly depends on fields saved
|-
|-




! scope="row" | GEOS-5 AGCM (Ganymed Tag,  FV Cubed-Sphere Dynamical Core)
! scope="row" |c1440 x 72L (7-km)
| c1440 x 72L (7-km)
! scope="row" |4000
|4000
! scope="row" |22
|22  
! scope="row" |88000
|88000
! scope="row" |3328
|3328 Gb
|Highly depends on fields saved
|Highly depends on fields saved
|-
|-
Line 74: Line 76:




Scaling for GEOS-5  (10 Days @ 1/2-deg)


FV-Cubed:  C180 x 72L  => 180 x 1080 x 72  = 194400 x 72
 
== Scaling for Cubed-Sphere Version at C180 (1/2 deg) ==
 




{| border="1"
{| border="1"
|+FV-Cubed:  C180 x 72L  => 180 x 1080 x 72  = 194400 x 72
 
! scope="col" | Layout NX
! scope="col" | Layout NX
! scope="col" | Layout NY
! scope="col" | Layout NY
Line 99: Line 102:


|}
|}
== Scaling for Lat-Lon Version at d72 (1/2 deg) ==




{| border="1"
{| border="1"
|+FV-LatLon:  d72  => 576 x 361 x 72  = 207936 x 72
 
! scope="col" | Layout NX
! scope="col" | Layout NX
! scope="col" | Layout NY
! scope="col" | Layout NY
Line 118: Line 128:




Layout Scaling Comparison for GEOS-5  FV-LatLon (10 Days @ 1/2-deg)
== Layout Scaling Comparison for Lat-Lon Version at d72 (1/2 deg) ==


{| border="1"
{| border="1"
|+FV-LatLon:  d72  => 576 x 361 x 72  = 207936 x 72
 
! scope="col" | Layout NX
! scope="col" | Layout NX
! scope="col" | Layout NY
! scope="col" | Layout NY

Revision as of 11:12, 14 May 2012

Performance at various resolutions

Results for a 10-day AMIP-Style simulation at 72 levels using climatological aerosols and running Ganymed-1_0 on Westmere CPUs
Resolution CPUs (typical) WallClock Time (Hours) CPU Time (Hours) Data Volume (Gbytes) Notes
b72 (2-deg) 48 0.25 12 3 Highly depends on fields saved
c72 (1-deg) 96 0.5 48 13 Highly depends on fields saved
d72 (0.5-deg) 384 1 384 52 Highly depends on fields saved
e72 (0.25-deg) 768 4.75 3648 288 Highly depends on fields saved
c720 x 72L (14-km) 1350 8 10800 832 Highly depends on fields saved
c1440 x 72L (7-km) 4000 22 88000 3328 Highly depends on fields saved



Scaling for Cubed-Sphere Version at C180 (1/2 deg)

Layout NX Layout NY Total PEs Total Time (hrs) Dynamics Time Physics Time Dynamics Percent Physics Percent
6 36 216 1.49 0.34 1.15 23.02% 76.98%
8 48 384 0.61 0.15 0.46 24.58% 75.42%
12 72 864 0.35 0.12 0.22 35.18% 64.82%



Scaling for Lat-Lon Version at d72 (1/2 deg)

Layout NX Layout NY Total PEs Total Time (hrs)
6 36 216 1.72
8 48 384 1.21
12 72 864 0.72


Layout Scaling Comparison for Lat-Lon Version at d72 (1/2 deg)

Layout NX Layout NY Total PEs Total Time (hrs)
4 96 384 1.59
6 64 384 1.17 <= Sweet Spot
8 48 384 1.21
12 32 384 1.20
16 24 384 1.27
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