Can KSP 64 Bit Run On My 64 Bit Mac?

[>The Amazing Spy<]

So, a dumb question, can I run the 64 Bit version of KSP on my Mac? First, I know my Mac is 64 Bit so it should work. So should it be as easy as putting a few launch parameters in?

[Plusck]

KSP 1.1 and up is by default 64 bit if your OS is 64-bit. You can check in Activity Monitor when you run it and it should confirm this.

KSP 1.0.5 (if for some reason you need or want to use 1.0.5) is only 32-bit, but is hackable to work with 64-bit Unity files (there is a reddit thread that tells you how to do this, IIRC.

So you shouldn't need any launch parameters at all.

[LameLefty]

Yep, that is correct. I've been running it since the start of the public 1.1 betas and it's great: runs smoothly, handles larger craft more efficiently, lets you finally break the 3.5 GB memory wall, and most important it's stable. I've had exactly two crashes since the start 5 weeks ago or so, and both were mod-related per my logs. 

[>The Amazing Spy<]

Yeah I did notice a MAJOR improvement from 1.0.5, but my poor little MacBook Air with it's pitiful 4 gigabytes of RAM and 1.4Ghz processor hates me for running Kerbal Space Program. Would anyone know how I could make it not use 3.99GB of ram?

[Plusck]

21 minutes ago, >The Amazing Spy< said:

Yeah I did notice a MAJOR improvement from 1.0.5, but my poor little MacBook Air with it's pitiful 4 gigabytes of RAM and 1.4Ghz processor hates me for running Kerbal Space Program. Would anyone know how I could make it not use 3.99GB of ram?

Cut some mods?

I haven't really delved into mods yet. Which is probably why I am always surprised by other people's RAM usage. I have 16GB available, acquired at vast, vast expense (ECC 800 with huge heatsinks) and KSP never even seems to break the 2GB barrier.

[>The Amazing Spy<]

Hmm... I do have some mods. I don't know why it's slow. What are your settings?

[Plusck]

7 hours ago, >The Amazing Spy< said:

Hmm... I do have some mods. I don't know why it's slow. What are your settings?

Default mostly, AFAIK.

Spoiler

SIMULATE_IN_BACKGROUND = True
PHYSICS_FRAME_DT_LIMIT = 0.04
MAX_VESSELS_BUDGET = 150
DECLUTTER_KSC = True
CONIC_PATCH_DRAW_MODE = 3
CONIC_PATCH_LIMIT = 3
ORBIT_FADE_STRENGTH = 0.8540161
ORBIT_FADE_DIRECTION_INV = False
ORBIT_WARP_DOWN_AT_SOI = True
SHOW_PWARP_WARNING = False
EVA_ROTATE_ON_MOVE = False
...
SHOW_SPACE_CENTER_CREW = False
...
TEMPERATURE_GAUGES_MODE = 3
...
MUSIC_VOLUME = 0
...
SCREEN_RESOLUTION_WIDTH = 1600
SCREEN_RESOLUTION_HEIGHT = 1000
FULLSCREEN = False
QUALITY_PRESET = 5
ANTI_ALIASING = 1
TEXTURE_QUALITY = 1
SYNC_VBL = 1
LIGHT_QUALITY = 8
SHADOWS_QUALITY = 4
FRAMERATE_LIMIT = 120
PLANET_SCATTER = True
PLANET_SCATTER_FACTOR = 0.5
WATERLEVEL_BASE_OFFSET = 1.5
WATERLEVEL_MAXLEVEL_MULT = 0.1
UNSUPPORTED_LEGACY_SHADER_TERRAIN = False
AERO_FX_QUALITY = 3
SURFACE_FX = True
INFLIGHT_HIGHLIGHT = True
FALLBACK_UNDERWATER_MODE = 1
EDGE_HIGHLIGHTING_PPFX = False

The only crucial thing in there is the SHOW_SPACE_CENTER_CREW = False

Makes a significant difference in the VAB