[slurm-users] FairShare

[Ryan Cox]

Micheal,

Details are at https://slurm.schedmd.com/fair_tree.html 
<https://slurm.schedmd.com/fair_tree.html>. If they have the same shares 
and usage as each other, they will have the same fair share value.  One 
thing to keep in mind is that sshare rounds or truncates the values, so 
0.000000 does not necessarily mean that a value is actually 0. 
https://slurm.schedmd.com/SUG14/fair_tree.pdf has more details, starting 
at page 34 or so.

Ryan

On 12/2/20 9:32 AM, Micheal Krombopulous wrote:
> Can someone tell me how to calculate fairshare (under fairtree)? I can't figure it out. I would have thought it would be the same score for all users in an account. E.g., here is one of my accounts:
>
> Account     User  RawShares  NormShares    RawUsage   NormUsage  EffectvUsage    LevelFS  FairShare
> -------------------- ---------- ---------- ----------- ----------- ----------- ------------- ---------- ----------
> root                                               0.000000      611349                  1.000000
>   root                      root             1    0.076923           0    0.000000      0.000000        inf   1.000000
>   sray                                          1    0.076923      30921 0.505582      0.505582   0.152147
>    sray                 phedge            1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                raab                  1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                benequist          1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                 bosch               1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                rjenkins             1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                  esmith            1    0.050000           0    0.000000      0.000000 1.7226e+07   0.054545
>    sray                  gheinz            1    0.050000           0    0.000000      0.000000 1.9074e+14   0.072727
>    sray                  jfitz                 1    0.050000           0    0.000000      0.000000 8.0640e+20   0.081818
>    sray                   ajoel              1    0.050000       42449    0.069465      0.137396   0.363913   0.018182
>    sray                  jmay               1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                 aferrier            1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                bdehaven         1    0.050000      225002    0.367771      0.727420   0.068736   0.009091
>    sray                msmythe          1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                 gfink               1    0.050000           0    0.000000      0.000000 2.0343e+05   0.045455
>    sray                ahantau           1    0.050000          31    0.000051      0.000102 491.737549   0.036364
>    sray                 hmiller            1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                   ttinker          1    0.050000           0    0.000000      0.000000 1.4798e+13   0.063636
>    sray                wcooper          1    0.050000           0    0.000000      0.000000        inf   0.181818
>    sray                 xtsao              1    0.050000       41734    0.068296      0.135083   0.370143   0.027273
>    sray                   xping            1    0.050000           0    0.000000      0.000000 1.9833e+24   0.090909
>
>