Is there a way to set a maximum number of tasks running simultaneously?
I have a Ryzen 7 1700 (8 cores, 16 threads) set to work with 15 cores but with M@H it uses all cores for CPU tasks, ignoring GPU ones.

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ASUS X570 E-Gaming
AMD Ryzen 9 3950X, 16 core / 32 thread 4.4 GHz
AMD Radeon Sapphire RX 480 4GB Nitro+
Nvidia GTX 1080 Ti Gaming X Trio
4x16 GB Corsair Vengeance RGB 3466 MHz

Create a file app_config.xml in the milkyway.cs.rpi.edu_milkway directory.

Place the following 3 lines of text in the file and save it.

<app_config>
<project_max_concurrent>4</project_max_concurrent>
</app_config>


On the BOINC Manager screen, under Options, click on Read config files.



Alternatively, on the BOINC Manager screen, under Options, Computing Preferences, Computing, set Use at most 50% of the CPU's

Thank you 😉

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ASUS X570 E-Gaming
AMD Ryzen 9 3950X, 16 core / 32 thread 4.4 GHz
AMD Radeon Sapphire RX 480 4GB Nitro+
Nvidia GTX 1080 Ti Gaming X Trio
4x16 GB Corsair Vengeance RGB 3466 MHz

I'm trying to do the same thing, but I keep getting this error message:

Milkyway@Home: Notice from BOINC
Missing <app_config> in app_config.xml

I used NotepadXML to create this file:

<?xml version="1.0" encoding="utf-8"?>
<app_config>
<app>
<name>MilkyWay@Home</name>
<max_concurrent>5</max_concurrent>
</app>
</app_config>

The first line was inserted by NotepadXML and the <name> line is one of my efforts to resolve the error. Doesn't seem to matter whether either line is there... the same error is returned and the file doesn't seem to work.

Obviously, I'm doing something wrong, but I haven't a clue what.

Any suggestions?

I'm trying to do the same thing, but I keep getting this error message:

Milkyway@Home: Notice from BOINC
Missing <app_config> in app_config.xml

I used NotepadXML to create this file:

<?xml version="1.0" encoding="utf-8"?>
<app_config>
<app>
<name>MilkyWay@Home</name>
<max_concurrent>5</max_concurrent>
</app>
</app_config>

The first line was inserted by NotepadXML and the <name> line is one of my efforts to resolve the error. Doesn't seem to matter whether either line is there... the same error is returned and the file doesn't seem to work.

Obviously, I'm doing something wrong, but I haven't a clue what.

Any suggestions?

I think the actual names of the M@H apps are: 'milkyway' and 'milkyway_nbody'

Try changing the "MilkyWay@Home" to the app name you are interested in.

I'm trying to do the same thing, but I keep getting this error message:

Milkyway@Home: Notice from BOINC
Missing <app_config> in app_config.xml

I used NotepadXML to create this file:

<?xml version="1.0" encoding="utf-8"?>
<app_config>
<app>
<name>MilkyWay@Home</name>
<max_concurrent>5</max_concurrent>
</app>
</app_config>

The first line was inserted by NotepadXML and the <name> line is one of my efforts to resolve the error. Doesn't seem to matter whether either line is there... the same error is returned and the file doesn't seem to work.

Obviously, I'm doing something wrong, but I haven't a clue what.

Any suggestions?

Get rid of the name line and put it in the MilkyWay Project folder under c:\program data\boinc\projects\'milkyway'

You don't need the name line since it only affects milkyway and is in the milkyway folder.