what's the format of config.txt for gpuowl?

[drkirkby]

I run GpuOwl - I have no idea of the version, as as the program does not report this. When it runs, it says

2021-05-12 11:00:26 GpuOwl VERSION

I tried looking in the source code. The nearest I came to getting a version is the contents of the files version.inc and version.new, but the contents of these are both "". The file version.h says ""VERSION not set".

Anyway, that aside, when GpuOwl starts, it reports there's no file config.txt. I don't see the format of the file documented, and there's no example.


Dave

[Uncwilly]

Did you look at this thread? https://www.mersenneforum.org/showthread.php?t=23391

[kriesel]

Originally Posted by Uncwilly

Did you look at this thread? https://www.mersenneforum.org/showthread.php?t=23391

Seems like "use the reference info" has been posted before. A lot.

Also, in general, use the help output: gpuowl -h >help.txt to save it for future reference.

The version.inc contents are created and then incorporated during a correct build. Try to build it again, from a clean directory, and check the build process's error and other messages carefully. Download a build-log.txt from one of the more recent Windows gpuowl build posts, to get a rough idea of how the version string gets set during a build. Or study the make file's Linux flow.

[drkirkby]

Thank you. I will bookmark the reference thread.

At

https://www.mersenneforum.org/showthread.php?t=23473
there's a list of things affecting the number of GPUs in a system. The last is "Are there any more?"

Yes, in the case of my Dell 7920 tower workstation. It must be run from a 230 V source, not 115 V if one is use to above (from memory) 900 W. The one PSU is 1400 W, but it can't supply 1400 W at a low voltage. Here in the UK it is irrelevant, as our main voltage is nominally 230 V, but in the US there are both 120 (ish) and 240 (ish) volt outlets.

There's also a rackmount version of that workstation which has two power supplies. They can be used as redundant power supplies, just like most rackmount servers. However, playing around with the endless options, one can determine that if one sticks enough power-hungry GPUs in it, then the power supplies can't be redundant. So both power supplies are needed to power the system, so if one fails, the machine will presumably shut down.

Dave

[preda]

Originally Posted by drkirkby

I run GpuOwl - I have no idea of the version, as as the program does not report this. When it runs, it says

2021-05-12 11:00:26 GpuOwl VERSION

I tried looking in the source code. The nearest I came to getting a version is the contents of the files version.inc and version.new, but the contents of these are both "". The file version.h says ""VERSION not set".

Anyway, that aside, when GpuOwl starts, it reports there's no file config.txt. I don't see the format of the file documented, and there's no example.


Dave

It's fine to run without a config.txt if you don't need it. It's just a facility to put the flags that you would otherwise pass on the command line, in a file. The format is exactly what you'd put on the gpuowl's command line, on a single line in that text file.
e.g., in one of my config.txt I have:

-cpu xfx1 -uid 780c28c172daaaaa -pool /home/preda/pool