mirror of
https://github.com/jessicanataliagta/PSPRecomp
synced 2026-09-26 16:49:34 -04:00
Jessica_Natalia
36 lines
1.3 KiB
Batchfile
36 lines
1.3 KiB
Batchfile
@echo off
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rem Picks a memory-aware compile parallelism for the VCS profile.
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rem
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rem Each generated AOT unit is a ~500 KB translation unit compiled at /Ox /Ob3,
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rem which routinely peaks above 2 GB in a single cl.exe front-end. Driving the
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rem build with one worker per logical core exhausts physical memory on machines
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rem with many cores relative to RAM, so cap the workers by available memory too.
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rem
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rem Sets JOBS. Override with PSPRECOMP_JOBS=<n> in the environment.
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rem Callers must use /m:1 and rely on cl.exe /MP<JOBS> for parallelism, so the
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rem total number of concurrent front-ends stays equal to JOBS.
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set "JOBS="
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if defined PSPRECOMP_JOBS (
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set "JOBS=%PSPRECOMP_JOBS%"
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goto :DONE
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)
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set "CORES=%NUMBER_OF_PROCESSORS%"
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if not defined CORES set "CORES=8"
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rem ~3 GB of headroom per concurrent cl.exe front-end.
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set "MEMJOBS="
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for /f "usebackq delims=" %%I in (`powershell -NoProfile -NonInteractive -Command ^
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"[int][math]::Floor((Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory/3GB)" 2^>nul`) do set "MEMJOBS=%%I"
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if not defined MEMJOBS set "MEMJOBS=%CORES%"
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if "%MEMJOBS%"=="0" set "MEMJOBS=2"
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set "JOBS=%CORES%"
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if %MEMJOBS% LSS %CORES% set "JOBS=%MEMJOBS%"
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if %JOBS% LSS 2 set "JOBS=2"
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:DONE
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echo Compile workers: %JOBS% (cores: %NUMBER_OF_PROCESSORS%, memory-capped; override with PSPRECOMP_JOBS)
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exit /b 0
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