What's the Purpose of "Multi-thread" Option in Lagarith?

[christopheramos]

I am new to using the Lagarith lossless codec. What's the Purpose of the "Multi-thread" Option when I go to configure it?

Thanks!!!!

[manono]

I assume it's for those people with Dual Core processors, although I'm not positive, as I don't have mine set up yet, and can't test. jagabo might know. Didn't I already suggest you read the Settings.txt that comes with it:

Use Multithreading: This allows Lagarith to encode and decode the color
channels in a video in parallel. On a system that has multiple processors,
this can speed up encoding and decoding. Enabling this option on a
Hyperthreaded system appears to offer no significant speed increase, and
enabling it on a single processor system may slow down Lagarith by a
tiny amount.

[dipstick]

I never noticed that option before now, thank's for pointing it out. It does seem to work better on my Athlon 64 x2 dual-core system. Lagarith was always fast to write to, but a little slow to read. Ticking the "Multithread" option appears to help decode a little quicker on my system.

[christopheramos]

Manono,

Yeah, I did read the text file. But I still wasn't sure what the multithreading option meant. Because I don't know what multiple processors are. That's why I asked.

[teegee420]

Manono,

Yeah, I did read the text file. But I still wasn't sure what the multithreading option meant. Because I don't know what multiple processors are. That's why I asked.

Though the newer Intel and Athlon CPU's are dual-core, most of the Intel P4's of the last couple of years use something called Hyper Threading, which kind of fools the OS into thinking that there are two processors instead of one. The multi-threading option may work for you.

[manono]

OK christopheramos, I apologize. I figured you hadn't read it, and figured if you had read it you'd know that multiple processors included the newer dual core ones.