[Wien] control of k points distribution

[Peter Blaha]

Put    granularity:1
This will evenly distribute the k-points at once (and not one after the 
other, which is usefull for load ballencing, but you cannot use $SCRATCH)



jadhikari at clarku.edu schrieb:
> Dear Wien users,
> 
> I have a question concerning k point distribution.
> 24 IBZ points are evenly distributed to 3 nodes and 6 processers with each
> processor getting 4 IBZ points as shown below. (1 node has 2 processers)
> 
> But this is not the situation always. Sometimes the no of k points that
> one processor get is more than that of others. And the system always
> crashes if this happens.
> 
> Is there a way to control this inhomogeneity? All the processers are of
> equal speed. The .machines file is shown at the end.
> 
> Thank you.
> 
> Subin
> 
> _________________________________________________________________________
>      node2(1) 9.176u 0.092s 0:09.28 99.7%       0+0k 0+0io 0pf+0w
>      node5(1) 9.715u 0.118s 0:10.50 93.5%       0+0k 0+0io 0pf+0w
>      node9(1) 9.754u 0.130s 0:11.75 84.0%       0+0k 0+0io 0pf+0w
>      node2(1) 10.918u 0.112s 0:17.80 61.9%      0+0k 0+0io 0pf+0w
>      node5(1) 9.453u 0.114s 0:11.28 84.7%       0+0k 0+0io 0pf+0w
>      node9(1) 9.995u 0.117s 0:13.79 73.2%       0+0k 0+0io 0pf+0w
>      node2(1) 9.286u 0.095s 0:09.40 99.6%       0+0k 0+0io 0pf+0w
>      node5(1) 11.702u 0.115s 0:12.99 90.9%      0+0k 0+0io 0pf+0w
>      node9(1) 9.336u 0.110s 0:16.29 57.9%       0+0k 0+0io 0pf+0w
>      node2(1) 9.403u 0.111s 0:15.62 60.8%       0+0k 0+0io 0pf+0w
>      node5(1) 11.607u 0.116s 0:15.94 73.4%      0+0k 0+0io 0pf+0w
>      node9(1) 9.595u 0.119s 0:13.52 71.7%       0+0k 0+0io 0pf+0w
>      node2(1) 9.207u 0.112s 0:10.64 87.5%       0+0k 0+0io 0pf+0w
>      node5(1) 11.135u 0.124s 0:14.81 75.9%      0+0k 0+0io 0pf+0w
>      node9(1) 9.985u 0.114s 0:16.91 59.6%       0+0k 0+0io 0pf+0w
>      node2(1) 10.602u 0.118s 0:18.33 58.4%      0+0k 0+0io 0pf+0w
>      node5(1) 11.476u 0.106s 0:16.98 68.1%      0+0k 0+0io 0pf+0w
>      node9(1) 9.325u 0.100s 0:13.75 68.5%       0+0k 0+0io 0pf+0w
>      node2(1) 9.447u 0.109s 0:10.03 95.1%       0+0k 0+0io 0pf+0w
>      node5(1) 9.997u 0.115s 0:11.08 91.1%       0+0k 0+0io 0pf+0w
>      node9(1) 10.821u 0.119s 0:19.06 57.3%      0+0k 0+0io 0pf+0w
>      node2(1) 9.400u 0.097s 0:13.84 68.5%       0+0k 0+0io 0pf+0w
>      node5(1) 11.749u 0.130s 0:17.38 68.2%      0+0k 0+0io 0pf+0w
>      node9(1) 9.436u 0.112s 0:12.45 76.6%       0+0k 0+0io 0pf+0w
>    Summary of lapw1para:
>    node2         k=8     user=77.439     wallclock=104.94
>    node5         k=8     user=86.834     wallclock=110.96
>    node9         k=8     user=78.247     wallclock=117.52
>    node2         k=8     user=77.439     wallclock=104.94
>    node5         k=8     user=86.834     wallclock=110.96
>    node9         k=8     user=78.247     wallclock=117.52
> _________________________________________________________
> .machine file
> 
> 1:node2
> 1:node5
> 1:node9
> 1:node2
> 1:node5
> 1:node9
> granularity:4
> extrafine:1
> 
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