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It's really similar to a binary search tree. Within each account,
it is Shares / Usage to calculate the Level FS. See
<a class="moz-txt-link-freetext" href="https://slurm.schedmd.com/SUG14/fair_tree.pdf">https://slurm.schedmd.com/SUG14/fair_tree.pdf</a> has more details,
starting at page 34 or so. It even has an "animation".<br>
<br>
Ryan<br>
<br>
<div class="moz-cite-prefix">On 12/2/20 10:22 AM, Micheal
Krombopulous wrote:<br>
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I've read the manual and I re-read the other link. What they
boil down to is Fair Share is calculated based on a recondite
"rooted plane tree", which I do not have the background in
discrete math to understand.</div>
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I'm hoping someone can explain it so my little kernel can
understand.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b>
slurm-users <a class="moz-txt-link-rfc2396E" href="mailto:slurm-users-bounces@lists.schedmd.com"><slurm-users-bounces@lists.schedmd.com></a> on
behalf of Micheal Krombopulous
<a class="moz-txt-link-rfc2396E" href="mailto:MichealKrombopulous@outlook.com"><MichealKrombopulous@outlook.com></a><br>
<b>Sent:</b> Wednesday, December 2, 2020 9:32 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:slurm-users@lists.schedmd.com">slurm-users@lists.schedmd.com</a>
<a class="moz-txt-link-rfc2396E" href="mailto:slurm-users@lists.schedmd.com"><slurm-users@lists.schedmd.com></a><br>
<b>Subject:</b> [slurm-users] FairShare</font>
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<div class="PlainText">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:<br>
<br>
Account User RawShares NormShares RawUsage
NormUsage EffectvUsage LevelFS FairShare<br>
-------------------- ---------- ---------- -----------
----------- ----------- ------------- ----------
----------<br>
root
0.000000 611349 1.000000<br>
root root 1 0.076923
0 0.000000 0.000000 inf
1.000000<br>
sray 1
0.076923 30921 0.505582 0.505582 0.152147<br>
sray phedge 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray raab 1 0.050000
0 0.000000 0.000000 inf
0.181818<br>
sray benequist 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray bosch 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray rjenkins 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray esmith 1 0.050000
0 0.000000 0.000000 1.7226e+07 0.054545<br>
sray gheinz 1 0.050000
0 0.000000 0.000000 1.9074e+14 0.072727<br>
sray jfitz 1
0.050000 0 0.000000 0.000000 8.0640e+20
0.081818<br>
sray ajoel 1 0.050000
42449 0.069465 0.137396 0.363913
0.018182<br>
sray jmay 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray aferrier 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray bdehaven 1 0.050000
225002 0.367771 0.727420 0.068736 0.009091<br>
sray msmythe 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray gfink 1 0.050000
0 0.000000 0.000000 2.0343e+05 0.045455<br>
sray ahantau 1 0.050000
31 0.000051 0.000102 491.737549 0.036364<br>
sray hmiller 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray ttinker 1 0.050000
0 0.000000 0.000000 1.4798e+13 0.063636<br>
sray wcooper 1 0.050000
0 0.000000 0.000000 inf 0.181818<br>
sray xtsao 1 0.050000
41734 0.068296 0.135083 0.370143 0.027273<br>
sray xping 1 0.050000
0 0.000000 0.000000 1.9833e+24 0.090909<br>
<br>
<br>
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