Posts by Aurum

1) Message boards : News : Aliquot sequence 2175894 has terminated!!! (Message 1559)
Posted 25 Mar 2021 by Aurum
Post:
I learned what an aliquot sequence is. So did this sequence start with the divisors of 2 million 175 thousand 894 excluding 2,175,894???
2) Message boards : Number crunching : Is it possible to run yafu-4t tasks with 8 cores? (Message 1557)
Posted 18 Mar 2021 by Aurum
Post:
Try it and let us know. I predict no.
<app_config>
    <app>
        <name>yafu-4t</name>
        <max_concurrent>8</max_concurrent>
    </app>
    <app_version>
        <app_name>yafu-4t</app_name>
        <plan_class>4t</plan_class>
        <avg_ncpus>8</avg_ncpus>
        <cmdline>--nthreads 8</cmdline>
    </app_version>
<app_config>
3) Questions and Answers : Preferences : Math is wrong (Message 1478)
Posted 1 Jan 2020 by Aurum
Post:
In Your Account/Computing the math is wrong. What gives???
4) Questions and Answers : Getting started : What's the Difference (Message 1476)
Posted 29 Dec 2019 by Aurum
Post:
The big ones use every core they can find if not constrained.
5) Questions and Answers : Getting started : What's the Difference (Message 1474)
Posted 25 Dec 2019 by Aurum
Post:
If you want to attempt to tame this beast put this in your app_config:
<app_config>
    <app>
        <name>yafu-32t</name>
        <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
        <app_name>yafu-32t</app_name>
        <plan_class>32t</plan_class>
        <avg_ncpus>32</avg_ncpus>
        <cmdline>--nthreads 32</cmdline>
    </app_version>
</app_config>
Then restart it:
/etc/init.d/boinc-client restart
6) Questions and Answers : Getting started : What's the Difference (Message 1473)
Posted 25 Dec 2019 by Aurum
Post:
What does the "t" signify in yafu-4t and yafu-32t ???
How does one choose the number of CPUs for each type of yafu WU ???
Yo YoYo are you there???
Doesn't anybody know the answer???
7) Questions and Answers : Getting started : What's the Difference (Message 1465)
Posted 11 Dec 2019 by Aurum
Post:
What does the "t" signify in yafu-4t and yafu-32t ???
How does one choose the number of CPUs for each type of yafu WU ???
8) Message boards : Number crunching : How do I get YAFU to stop sending me tasks that use up 100% of my cores? (Message 1344)
Posted 27 Dec 2018 by Aurum
Post:
Hi YoYo, When you define your own class plans (<plan_class>16t</plan_class> & <plan_class>32t</plan_class>) don't you have to pass the client your plan_class_spec.xml file???
https://boinc.berkeley.edu/trac/wiki/AppPlanSpec

This app_config.xml is not working to control number of threads used:
   <app>
      <name>yafu-16t</name>
   </app>
   <app_version>
      <app_name>yafu-16t</app_name>
      <plan_class>16t</plan_class>
      <cmdline>--nthreads 16</cmdline>
      <nthreads_cmdline>1</nthreads_cmdline>
   </app_version>
   <app>
      <name>yafu-32t</name>
   </app>
   <app_version>
      <app_name>yafu-32t</app_name>
      <plan_class>32t</plan_class>
      <cmdline>--nthreads 32</cmdline>
      <nthreads_cmdline>1</nthreads_cmdline>
   </app_version>
My client_state.xml file says:
<app_version>
    <app_name>yafu-32t</app_name>
    <version_num>13401</version_num>
    <platform>x86_64-pc-linux-gnu</platform>
    <avg_ncpus>40.000000</avg_ncpus>
    <flops>122619847136.720169</flops>
    <plan_class>32t</plan_class>
    <api_version>7.1.0</api_version>
    <cmdline>--nthreads 32</cmdline>
And 32t still takes all 40 CPU threads.
https://boinc.berkeley.edu/trac/wiki/AppPlan#Predefinedplanclasses

BTW, can't see the check marks in my Yafu Preferences Run only the selected applications.
9) Message boards : Number crunching : How do I get YAFU to stop sending me tasks that use up 100% of my cores? (Message 1343)
Posted 26 Dec 2018 by Aurum
Post:
I think your app_config.xml should be more like:
<app_config>
<app>
<name>yafu-8t</name>
<max_concurrent>4</max_concurrent>
<fraction_done_exact/>
</app>
<app_version>
<app_name>yafu-8t</app_name>
<plan_class>mt</plan_class>
<cmdline>--nthreads 12</cmdline>
<avg_ncpus>12</avg_ncpus>
</app_version>
</app_config>

I suspect <avg_ncpus>12</avg_ncpus> is not needed if <cmdline>--nthreads 12</cmdline> is issued.
Edit: Tried it sans <avg_ncpus> and Yafu wants every thread I've got. Need to include it.

See: https://boinc.berkeley.edu/trac/wiki/AppPlanSpec and https://boinc.berkeley.edu/trac/wiki/AppPlan#Predefinedplanclasses







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