Changes between Version 54 and Version 55 of UM/Configurations/Performance


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Timestamp:
28/11/18 16:29:36 (10 months ago)
Author:
ros
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  • UM/Configurations/Performance

    v54 v55  
    2929*Decomposition: A = Atmos (EW x NS), O = Ocean (EW x NS), X = XIOS processes (nodes) 
    3030 
    31 == A more detailed view of u-as037 (r 61036) running on ARCHER == 
     31== Scaling & Cost Plots - ARCHER ==  
     32=== GC3.1 N96 ORCA1 u-as037 (r 61036) === 
    3233This looks at the performance of `HadGEM3-GC3.1 N96ORCA1 PI Control for CMIP6` over a wide range of atmosphere decompositions with a fixed number of IO servers (6).  The model was run on ARCHER in December, 2017.  The ocean decomposition was 9x8 and the XIOS used 6 processes.  The atmosphere was run with two threads, except for one run at 36x28 where three threads were used (3,186 processes in the graph below). 
    3334 
    34 The following graphs show the model rate (in model years per day) against cost and total number of processes.  Each point in the graph is the result of running the coupled suite for a model month. The cost axis was obtained by rescaling the processors axis in the lower graph.  The cost of computing the graph was 440 kAU. 
     35The following graphs show the model rate (in model years per day) against cost and total number of processes.  Each point in the graph is the result of running the coupled suite for a model month. The cost axis was obtained by rescaling the processors axis in the right-hand graph.  The cost of computing the graph was 440 kAU. 
    3536 
    36 [[Image(Rplot05.jpeg )]]  
     37||[[Image(Rplot05.jpeg, 500px)]] || [[Image(Rplot06.jpeg, 500px )]] || 
    3738 
    38  
    39  
    40 [[Image(Rplot06.jpeg )]] 
    41  
     39=== GA7.0 (u-ba767) === 
    4240 
    4341Similar calculations are performed for GA7.0. Real costs are used. The performance appears badly affected in the high processor limit. 
    4442 
    45 || [[Image(GA7cpuGraphNew.png, 400px)]]|| [[Image(GA7costGraphNew.png, 400px)]]|| 
     43|| [[Image(GA7cpuGraphNew.png, 500px)]]|| [[Image(GA7costGraphNew.png, 500px)]]||