Difference between revisions of "System requirements"

Revision as of 08:08, 31 December 2021

xTATTEREDx · +FINE+ · *SUPERIOR* · ≡EXCEPTIONAL≡ · ☼MASTERWORK☼

v50.12 · v0.47.05

This article is about the current version of DF.
Note that some content may still need to be updated.

If you're looking for information on improving the performance of Dwarf Fortress on your computer, see Maximizing Framerate. For installation instructions, see Installation.

Dwarf Fortress is a very complex game, but in ways that differ from most other complex games. This leads to the game having a somewhat unusual set of requirements.

Note that while the front page displays only three builds, there also exist other builds under the "All Versions" link.

OS

Windows requires XP SP3 or newer and an Intel/AMD CPU.
Linux runs natively on an Intel/AMD CPU (x86 or amd64) with the proper dependencies installed. Running the Windows build under Wine is an alternative, but introduces overhead that may be significant.
MacOS requires 10.5 or later and an Intel CPU. There is not an ARM build yet, but the existing macOS build may work under Rosetta.
Builds for other systems do not exist. Depending on your system, it may be possible to run the other builds through some messing around.

GPU

Dwarf Fortress is not particularly graphically intensive, even when using high-res tilesets and graphics sets. Dwarf Fortress also doesn't use technologies like OpenCL to make use of graphics cards anyway, so a top-of-the-line graphics card will generally not improve performance.

CPU

Dwarf Fortress mostly operates on a single thread, so if you want to optimize for DF, you should probably optimize for single-core performance. This is especially true if you want to do more laggy things, such as mist generators. However, laggy circumstances are generally the exception, not the rule, and in those other circumstances, you generally don't need a particularly powerful CPU.

Cache size

As Dwarf Fortress's bottlenecks are mostly due to cache misses, it has been speculated on the DF forums that "a CPU with a positively giant L3/L4 cache (and I mean > 256 mb or GTFO)" would improve DF performance, as would using faster RAM with smaller transfer times—see the next section.

RAM

During regular gameplay, Dwarf Fortress usually doesn't consume too much memory. 512MB is probably a bit tight, but 1GB is absolutely sufficient, though if you're short on RAM, you may want to quit other running processes. What's particularly important during regular gameplay is RAM latency—since the game uses the RAM every single frame, it's important that your RAM be fast, lest you experience FPS death.

However, world generation is known to eat up a lot more RAM than normal gameplay, especially if you generate world that are particularly large or have long histories. Multiple gigabytes may be consumed. To be safe, you should shut down any background processes when generating a world, and if you're particularly tight on RAM, consider reducing the size or history of the worlds you generate—the game is rich enough with content that you'll still have plenty of things to do, and you can always tweak the other, less RAM-hungry advanced world generation parameters. (RAM latency is less of a problem here, since you'll only need to do this once every so often.)

SDL vs. Legacy

SDL is a cross-platform application framework. The SDL version of DF runs on Windows, Mac OS X, and Linux. It includes Baughn's new OpenGL code, which is faster and has more features (including support for PNG tilesets and using scroll wheels).

"Legacy" refers to the (Windows-only) framework Toady used before migrating to SDL. The legacy version is only necessary if the SDL version doesn't work for some reason.

Experiential reports

Report format

Please read the report template page before contributing any reports.

Reports

Configuration type: Self-built PC from 2008

Game info: Game version: v0.34.07; World size: Small; Embark size: 4×4; Age of fort: 1 year; Number of dwarves: 15; Average fps: 100; Default/nondefault raws: default; Tileset in use: Mayday; Amount of stone dug: ~3000; Amount of water and state: About 15 murky pools, no river or stream; Approximate amount of z-levels: 10; RAM usage of game: 622 Mb; Draw mode in init.txt: 2D

PC info: CPU: Intel Core2Quad Q6600 @ 2.4Ghz; MBO: Gigabyte P35-DS3L; RAM: 4GB DDR2 @ 800Mhz; GPU: Gigabyte Radeon HD5850; OS: Windows 7 Professional x64

Configuration type: Self-built PC from 2012

Game info: Game version: v0.34.11; World size: Small; Embark size: 4×4; Age of fort: 8 years; Number of dwarves: 232; Average fps: 78; Default/nondefault raws: default; Tileset in use: Mayday; Amount of stone dug: ~1100; Amount of water and state: Frozen river, frozen murky pools, two artifical-made underground rivers; Approximate amount of z-levels: 8; RAM usage of game: 765 Mb; Draw mode in init.txt: 2D

PC info: CPU: Intel Core i5 3570K @ 3.4 Ghz; MBO: ASUS P8Z77-M PRO; RAM: 8GB DDR3 @ 1600Mhz; GPU: Gigabyte Radeon HD5850; OS: Windows 7 Professional x64

Configuration type: Self-built PC from 2012

Game info: Game version: v0.34.11; World size: Small; Embark size: 4×4; Age of fort: 2 years; Number of dwarves: 98; Average fps: ~250; Default/nondefault raws: default; Tileset in use: Mayday; Amount of stone dug: ~1900; Amount of water and state: Frozen river, Frozen Pools; Approximate amount of z-levels: 9; RAM usage of game: 834 Mb; Draw mode in init.txt: 2D

PC info: CPU: Amd Fx-8350 @ 4.8 Ghz; MBO: Gigabyte GA-990FXA-UD5; RAM: 16GB DDR3 @ 1866 Mhz; GPU: Sapphire Hd 7970 Ghz Vapor X; OS: Windows 7 Professional x64

"System requirements" in other Languages

Dwarven:	idith inem
Elvish:	eritha enotho
Goblin:	obsår eted
Human:	histek tikes

@@ Line 2: / Line 2: @@
 {{av}}
-''If you're looking for information on improving the performance of Dwarf Fortress on your computer, see [[Maximizing framerate|Maximizing Framerate]].  For installation instructions, see [[Installation]].''
+:''If you're looking for information on improving the performance of Dwarf Fortress on your computer, see [[Maximizing framerate|Maximizing Framerate]].  For installation instructions, see [[Installation]].''
+Dwarf Fortress is a very complex game, but in ways that differ from most other complex games.  This leads to the game having a somewhat unusual set of requirements.
+Note that while the [http://bay12games.com/dwarves/ front page] displays only three builds, there also exist other builds [http://bay12games.com/dwarves/older_versions.html under the "All Versions" link].
 == OS ==
 * '''Windows''' requires XP SP3 or newer and an Intel/AMD CPU.
-* '''Linux''' runs natively on an Intel/AMD CPU (x86_64 or i386) with the [[Installation#Linux|proper dependencies]] installed. Running the Windows build under Wine is an alternative.
+* '''Linux''' runs natively on an Intel/AMD CPU (x86 or amd64) with the [[Installation#Linux|proper dependencies]] installed. Running the Windows build under Wine is an alternative, but introduces overhead that may be significant.
 * '''MacOS''' requires 10.5 or later and an Intel CPU. There is not an ARM build yet, but the existing macOS build may work under Rosetta.
+* Builds for other systems do not exist.  Depending on your system, it ''may'' be possible to run the other builds through some messing around.
+==GPU==
+Dwarf Fortress is not particularly graphically intensive, even when using high-res [[tilesets]] and [[graphics set]]s.  Dwarf Fortress also doesn't use technologies like [https://en.wikipedia.org/wiki/OpenCL OpenCL] to make use of graphics cards anyway, so a top-of-the-line graphics card will generally not improve performance.
-== RAM ==
+==CPU==
-DF is not particularly RAM-hungry. Expect the process to allocate between 300 and 700 MB with medium regions. With 512MB you may be a bit on the short side, but 1 GB is absolutely sufficient. World Generation can eat up far more than that - it's possible to encounter crashes due to being out of memory. In particular major areas for this to occur are during history, final touches in finalizing sites, and while saving. This is especially problematic with unusual generator configurations, such as worlds with large numbers of megabeasts, caves, civilizations, high or non-existent site and population limits, and very lengthy histories. User-made modifications can also increase the requirements, depending on their nature.
+Dwarf Fortress mostly operates on a single thread, so if you want to optimize for DF, you should probably optimize for single-core performance.  This is especially true if you want to do more laggy things, such as [[mist]] generators.  However, laggy circumstances are generally the exception, not the rule, and in those other circumstances, you generally don't need a ''particularly'' powerful CPU.
-The most important thing to the performance of the game, however, is undoubtedly RAM ''latency''&mdash;the amount of lag the RAM has when working. Dwarf Fortress works the RAM every single frame for every single creature, every single item, every single piece of liquid, the temperature of every tile&mdash;you get the picture. The gigantic amount of operations working at the same time&mdash;which any current processor could handle much faster than what you see&mdash;is primarily bottlenecked by RAM latency and RAM speed.
+=== Cache size ===
-CPU and FPS are mildly correlated, but this correlation has been attributed as a non-causative one. Rather, newer CPUs seem to come with faster RAM, but for the purpose of a Dwarf Fortress computer, RAM is more important.
+As Dwarf Fortress's bottlenecks are mostly due to [https://en.wikipedia.org/wiki/CPU_cache#Cache_miss cache misses], it has been [http://www.bay12forums.com/smf/index.php?topic=151121.msg6270374#msg6270374 speculated on the DF forums] that "a CPU with a positively giant L3/L4 cache (and I mean > 256 mb or GTFO)" would improve DF performance, as would using faster RAM with smaller [https://en.wikipedia.org/wiki/CAS_latency transfer times]—see the next section.
-Before 0.43.05, Dwarf Fortress was 32-bit only, so adding more memory usually couldn't fix out-of-memory problems due to very large worlds and very large embark sites, since the memory available to Dwarf Fortress was limited to 2GB or 3GB (depending on the OS). It is unknown if 64-bit support provides any boost to FPS on 64-bit systems.
+== RAM ==
-=== Cache size ===
+During [[Fortress mode|regular]] [[Adventurer mode|gameplay]], Dwarf Fortress usually doesn't consume too much memory.  512MB is probably a bit tight, but 1GB is absolutely sufficient, though if you're short on RAM, you may want to quit other running processes.  What's particularly important during regular gameplay is RAM ''latency''—since the game uses the RAM ''every single frame'', it's important that your RAM be fast, lest you experience FPS death.
-As Dwarf Fortress's bottlenecks are mostly due to [https://en.wikipedia.org/wiki/CPU_cache#Cache_miss cache misses], it has been [http://www.bay12forums.com/smf/index.php?topic=151121.msg6270374#msg6270374 speculated on the DF forums] that "a CPU with a positively giant L3/L4 cache (and I mean > 256 mb or GTFO)" would improve DF performance, as would using faster RAM with smaller [https://en.wikipedia.org/wiki/CAS_latency transfer times].
+However, [[world generation]] is known to eat up a lot more RAM than normal gameplay, especially if you generate world that are particularly large or have long histories.  Multiple gigabytes may be consumed.  To be safe, you should shut down any background processes when generating a world, and if you're particularly tight on RAM, consider reducing the size or history of the worlds you generate—the game is rich enough with content that you'll still have plenty of things to do, and you can always tweak the other, less RAM-hungry [[advanced world generation]] parameters.  (RAM latency is less of a problem here, since you'll only need to do this once every so often.)
 == SDL vs. Legacy ==