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Subject: RE: Possible issue with epics-base 7 compilation
From: "Gofron, Kazimierz" <kgofron@bnl.gov>
To: Mark Rivers <rivers@cars.uchicago.edu>, "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Tue, 13 Feb 2018 00:42:19 +0000
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



Replies:
Re: Possible issue with epics-base 7 compilation Andrew Johnson
References:
Possible issue with epics-base 7 compilation Gofron, Kazimierz
RE: Possible issue with epics-base 7 compilation Mark Rivers

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