Re: [edk2-devel] [PATCH] Platform/Intel: Dynamic NUMBER_OF_PROCESSORS in build.

["Chiu, Chasel" <chasel.chiu@intel.com>]

Thanks Bob! I was not aware that BaseTools already handled this.
I just verified and it works so I will update code review which will only touch build.cfg.

Thanks!
Chasel


> -----Original Message-----
> From: Feng, Bob C
> Sent: Thursday, June 13, 2019 3:39 PM
> To: devel@edk2.groups.io; Chiu, Chasel <chasel.chiu@intel.com>
> Cc: Kubacki, Michael A <michael.a.kubacki@intel.com>; Desimone, Nathaniel L
> <nathaniel.l.desimone@intel.com>; Gao, Liming <liming.gao@intel.com>
> Subject: RE: [edk2-devel] [PATCH] Platform/Intel: Dynamic
> NUMBER_OF_PROCESSORS in build.
> 
> Hi Chasel,
> 
> Patch looks good.
> 
> For the process number, build.py does the same thing as this patch. If pass -n 0 to
> build.py, build.py will set the processor number to multiprocessing.cpu_count()
> 
> Thanks,
> Bob
> 
> 
> -----Original Message-----
> From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of Chiu,
> Chasel
> Sent: Thursday, June 13, 2019 2:15 PM
> To: devel@edk2.groups.io
> Cc: Kubacki, Michael A <michael.a.kubacki@intel.com>; Desimone, Nathaniel L
> <nathaniel.l.desimone@intel.com>; Gao, Liming <liming.gao@intel.com>
> Subject: [edk2-devel] [PATCH] Platform/Intel: Dynamic
> NUMBER_OF_PROCESSORS in build.
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1913
> 
> To improve build performance by default the maximum processors should be
> used for building.
> To support this, NUMBER_OF_PROCESSORS in build.cfg has new definition:
>   0 = AUTO. Maximum of processors will be used.
>   non-zero = limit or force the number of processors.
> 
> Test: tried several NUMBER_OF_PROCESSORS settings and
>       the build parameter can be updated accordingly
>       also builds successfully.
> 
> Cc: Michael Kubacki <michael.a.kubacki@intel.com>
> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
> Cc: Liming Gao <liming.gao@intel.com>
> Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
> ---
>  Platform/Intel/build.cfg     | 2 +-
>  Platform/Intel/build_bios.py | 8 +++++++-
>  2 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/Platform/Intel/build.cfg b/Platform/Intel/build.cfg index
> 6c23e5eabc..fc6e4fe824 100644
> --- a/Platform/Intel/build.cfg
> +++ b/Platform/Intel/build.cfg
> @@ -46,7 +46,7 @@ FSP_TEST_RELEASE = FALSE  SECURE_BOOT_ENABLE =
> FALSE  REBUILD_MODE =  BUILD_ROM_ONLY = -NUMBER_OF_PROCESSORS =
> 1
> +NUMBER_OF_PROCESSORS = 0
> 
> 
>  [PLATFORMS]
> diff --git a/Platform/Intel/build_bios.py b/Platform/Intel/build_bios.py index
> 09eceddeff..864511ac4d 100644
> --- a/Platform/Intel/build_bios.py
> +++ b/Platform/Intel/build_bios.py
> @@ -21,6 +21,7 @@ import shutil
>  import argparse
>  import traceback
>  import subprocess
> +import multiprocessing
>  from importlib import import_module
> 
>  try:
> @@ -345,7 +346,12 @@ def build(config):
>      print(" BUILD_ROM_ONLY = ", config.get("BUILD_ROM_ONLY"))
>      print("==========================================")
> 
> -    command = ["build", "-n", config["NUMBER_OF_PROCESSORS"]]
> +    NumberOfProcessors = config["NUMBER_OF_PROCESSORS"]
> +    if config["NUMBER_OF_PROCESSORS"] == "0":
> +        # 0 means AUTO, maximum number of processors will be set
> +        NumberOfProcessors = str(multiprocessing.cpu_count())
> +    print ("Number of processors set to " + NumberOfProcessors)
> +    command = ["build", "-n", NumberOfProcessors]
> 
>      if config["REBUILD_MODE"] and config["REBUILD_MODE"] != "":
>          command.append(config["REBUILD_MODE"])
> --
> 2.13.3.windows.1
> 
> 
>