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Performance - 6/21/2019 12:39:47 PM

juanchopancho

Posts: 52
Joined: 3/18/2009
Status: offline

Out of curiosity. Has anyone tried CMANO with crazy CPU core count? Like CPU 28 cores?

Does CMANO actually run very large scenarios better with a lot of cores?

Anyone try this?

Post #: 1

RE: Performance - 6/21/2019 4:35:57 PM

Dimitris

Posts: 13282
Joined: 7/31/2005
Status: offline

In its current public version, CMANO scales well up to 4 cores/threads, but usually not beyond that.

A large-core machine will still benefit it, though, by allowing it to use cores "exclusively" rather than timeshare them with other processes (of which Windows has plenty, even with no other desktop apps running).

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(in reply to juanchopancho)

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RE: Performance - 6/21/2019 10:20:25 PM

charlee22009

Posts: 72
Joined: 6/28/2015
Status: offline

I�ve been looking at building/buying a new pc (for command and flight simulators) and I�m looking at the i7-9700k and i9-9900k processors.

The i7-9700k has 8 cores/8 threads and *no* hyperthreading. Its base is 3.6, while its turbo clock is 4.9
8-core performance is at about 4.6...

The i9-9900k has 8 cores/16 threads *with* hyperthreading. Its base clock is 3.6, while the turbo clock is 5.
Sustained 8-core performance, without overclocking, is about 4.7 per core.

I�m leaning towards the i9 but I wasn�t sure if the performance would be any better for CMANO, or if there would be a noticeable difference between the 2 processors. Does having 16 threads really help or matter (for CMANO)?

Anybody have experience with these processors for CMANO, particularly with REALLY big scenarios? Especially at quick time compression with LOTS of sonobuoys and many naval units, radars, sonars, multiple display monitors etc.
Thank you 🙂

(in reply to Dimitris)

Post #: 3

RE: Performance - 6/22/2019 12:32:28 AM

Zanthra

Posts: 122
Joined: 2/6/2019
Status: offline

Another important question is not just related to CPU cores or their speed, but the amount of memory cache the CPU has. In my experience scenarios tend to slow down somewhat sharply after a certain number of units, and I tend to think that that point is when the live data that the game needs to calculate that tick no longer fits in the cache. Most consumer processors are fairly light on the cache size, at 8MB or so. The i7-9700 has 12MB cache, and the i9-9900 has 16MB of cache. I don't have any real data regarding cache size affect on CMANO, but if cache does have an impact even if the game does not make any use of the hyper-threading, being able to have more data available in cache may allow the game to loose less performance as the number of active units rises.

< Message edited by Zanthra -- 6/22/2019 12:34:31 AM >

(in reply to charlee22009)

Post #: 4