llvm dev - Jan 2013 - [LLVMdev] Setting number of lit threads with make check

Hi,

Does anyone know how I can set the number of threads lit uses when invoked by
make check? Lit has the —threads argument but this doesn't get set when run
through make so it uses the max number of cpus.

paul

Try:

make check-all LIT_ARGS="-s -j10"

To limit the threads to 10, for example.

On Wed, Jan 16, 2013 at 1:38 PM, Redmond, Paul <paul.redmond at intel.com>
wrote:
> Hi,
>
> Does anyone know how I can set the number of threads lit uses when invoked
by make check? Lit has the —threads argument but this doesn't get set when
run through make so it uses the max number of cpus.
>
> paul
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

Thanks.

I discovered it's different for cmake builds. You have to use cmake
-DLLVM_LIT_ARGS="..." instead.

Paul

On 2013-01-16 3:43 PM, "Will Dietz" <willdtz at gmail.com>
wrote:
>Try:
>
>make check-all LIT_ARGS="-s -j10"
>
>To limit the threads to 10, for example.
>
>On Wed, Jan 16, 2013 at 1:38 PM, Redmond, Paul <paul.redmond at
intel.com>
>wrote:
>> Hi,
>>
>> Does anyone know how I can set the number of threads lit uses when
>>invoked by make check? Lit has the ‹threads argument but this
doesn't
>>get set when run through make so it uses the max number of cpus.
>>
>> paul
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

What I've seen somewhere and been using is

make check-all 'LIT_ARGS=-v -j4'

I think that does work reliably since the -v gets passed through, though
I've never checked that the 4 processes I see aren't because I've
got a 4
core machine rather than due to the -j4...

Hope this helps,
Dave

-----Original Message-----
From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On
Behalf Of Redmond, Paul
Sent: 16 January 2013 19:39
To: llvmdev at cs.uiuc.edu
Subject: [LLVMdev] Setting number of lit threads with make check

Hi,

Does anyone know how I can set the number of threads lit uses when invoked
by make check? Lit has the -threads argument but this doesn't get set when
run through make so it uses the max number of cpus.

paul

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