Re: Possible issue with epics-base 7 compilation

[Andrew Johnson <anj@aps.anl.gov>]

Hi Guys,

I don't know if an update will make any difference, but I just built a
copy of the latest GNU make 4.2.1 which you can download from
  https://epics.anl.gov/download/tools/make-4.2.1-win64.zip

Please let us know if this helps.

- Andrew

On 02/12/2018 06:42 PM, Gofron, Kazimierz wrote:
> Hi Mark,
> Indeed it is make 4.1 from EPICS web page, that Andrew build.
> Kaz
> ________________________________________
> From: Mark Rivers [rivers@cars.uchicago.edu]
> Sent: Monday, February 12, 2018 7:36 PM
> To: Gofron, Kazimierz; tech-talk@aps.anl.gov
> Cc: engbretson@anl.gov
> Subject: RE: Possible issue with epics-base 7 compilation
> 
> Hi Kaz,
> 
> I don’t think this is a new problem, and is not specific to EPICS 7.  Are you using the make 4.1 that Andrew built and put on the EPICS Web page?
> 
> If I run “make –sj” with that version then it will occasionally get into a state when one “make” process is using 100% of a core forever and it never completes.  This happens with 3.14.12.5, 3.15.5, and 7.0.1.1.
> 
> I have never had a problem if I use “make –sj8” on my 8-core machine.
> 
> Mark
> 
> 
> From: Gofron, Kazimierz [mailto:kgofron@bnl.gov]
> Sent: Monday, February 12, 2018 6:23 PM
> To: tech-talk@aps.anl.gov
> Cc: Mark Rivers <rivers@cars.uchicago.edu>; engbretson@anl.gov
> Subject: Possible issue with epics-base 7 compilation
> 
> Hi,
> 
> There is a possible threading issue when compiling epics-base 7 using 'make -sj'  on 8 hyperthread system.
> Observed on System X 3250 M5 with 8 hyperthreads, running windows 7 Professional, Xeon E3-1230 v3, and Visual Studio 2017.
> 
> make -sj never completes compilation
> make -sj4 completes compilation
> 
> Compilation always successfully completes on Lenovo W550s laptop with 4 hyperthreads.
> 
> The two attached files show the two cases when compiling 'make' and 'make -sj' on the System X 3250 M5 (8 hyperthreads).
> 
> Kaz
> 
> 

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