Is there any way to reduce or limit memory usage

Question

C / C++

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Is there any way to reduce or limit memory usage

of msvc on compiling cpp code?

0

01.06.2021

19 ответов

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Alejandro
if you reduce the memory usage it will take longer...

nope, depends on available ram. your main enemy is disk io. for example if a one core compilation stay on ram will be faster that 16 core full speed compilation which involve virtual memory.

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01.06.2021

Alejandro

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nope, depends on available ram. your main enemy is...

If you don’t have enough ram it will attempt to use IO, but it uses the ram it requires. I don’t think reducing the memory usage and compute more will be faster than the IO penalty

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01.06.2021

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Alejandro
If you don’t have enough ram it will attempt to us...

in my case is faster. even memory compression is faster in my hw

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01.06.2021

Alejandro

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in my case is faster. even memory compression is f...

Do you have ssd?

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01.06.2021

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Alejandro
Do you have ssd?

nope

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01.06.2021

Manav | avoid unnecessary messaging me

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nope

-MP1 didn't work?

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01.06.2021

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Manav | avoid unnecessary messaging me
-MP1 didn't work?

that's for cl not the msbuild, with cl directly it needs a lot out of sln configs

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01.06.2021

Manav | avoid unnecessary messaging me

Déjà vu
that's for cl not the msbuild, with cl directly it...

yeah but I am sure you can pass commands to the compiler directly

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01.06.2021

Manav | avoid unnecessary messaging me

Déjà vu
that's for cl not the msbuild, with cl directly it...

found this, https://github.com/Microsoft/checkedc-clang/wiki/Parallel-builds-of-clang-on-Windows#msbuild hmm, it uses CL_MPCount

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01.06.2021

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Manav | avoid unnecessary messaging me
found this, https://github.com/Microsoft/checkedc-...

aw so this way you can pass commands to cl via msbuild, interesting, thanks

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01.06.2021

Manav | avoid unnecessary messaging me

Déjà vu
aw so this way you can pass commands to cl via msb...

That's specific to -MP. Let us know how it works out for you :)

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01.06.2021

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Manav | avoid unnecessary messaging me
That's specific to -MP. Let us know how it works o...

i will test it and tell you. thanks again.

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01.06.2021

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Manav | avoid unnecessary messaging me
found this, https://github.com/Microsoft/checkedc-...

i've tested inside the ide config before but did not work. i will test the commandline soon and tell you.

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01.06.2021

Manav | avoid unnecessary messaging me

Déjà vu
i've tested inside the ide config before but did n...

oh, if the ide config didn't work, then i doubt command line arguments will

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01.06.2021

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Manav | avoid unnecessary messaging me
oh, if the ide config didn't work, then i doubt co...

maybe it's just a bug in the ide

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01.06.2021

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Manav | avoid unnecessary messaging me
That's specific to -MP. Let us know how it works o...

failed

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06.06.2021

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it seems that ue4 source code in windows has a complex undocumented config system, their sln works internally with make files and some custom selfdocumented configs in c#. maybe that's why msbuild config does not work. still i did not find a unified make file and in their c# configs there is nothing about compilation threads/processes. if you know something about their config system please let me know.

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18.06.2021

Manav | avoid unnecessary messaging me

Déjà vu
it seems that ue4 source code in windows has a com...

Nope i dunno much about UE4 internals.

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18.06.2021

Alejandro · Accepted Answer

Alejandro

if you reduce the memory usage it will take longer to compile, right?

0

01.06.2021

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Is there any way to reduce or limit memory usage

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