Experimental Physics and Industrial Control System
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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
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).
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ANJ, 12 Feb 2018 |
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