L1Trigger/CSCTrackFinder: disable optimizer on Clang #7416
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Clang is causing issues (not only to CMS) with high memory usage in some scenarios. vpp_* generates files require 12.5GB of RSS with Clang, while only using 0.5GB with GCC. This was tested from Clang 3.3 to Clang 3.6 and trunk (2015 Jan 28). This is reported upstream and few people already looking into it. Also causes issue to KDE/QT people. Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
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…er-CSCTrackFinder L1Trigger/CSCTrackFinder: disable optimizer on Clang
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Clang is causing issues (not only to CMS) with high memory usage in
some scenarios. vpp_* generates files require 12.5GB of RSS with Clang,
while only using 0.5GB with GCC. This was tested from Clang 3.3 to Clang
3.6 and trunk (2015 Jan 28).
This is reported upstream and few people already looking into it. Also
causes issue to KDE/QT people.
Also this causes machine building CMSSW with Clang to go offline in Jenkins.
The job continues to run on build machine, but Jenkins looses the state. Then
Jenkins assumes that machine is free and could launch another CMSSW build
job causing more stress on machine.
Tested with GCC and Clang. Bypassing.
Signed-off-by: David Abdurachmanov David.Abdurachmanov@cern.ch