Malik Shahzad Muzaffar

agree with @perrotta , squashing these will also help removing these added/deleted files from the history and helps us keeping the cmssw repositry size in control

@mmusich , this is because we updated `root` which is causing a lot of externals and cmssw packages to rebuild. There is a newer IB we updated root available. I...

For https://cmssdt.cern.ch/SDT/jenkins-artifacts/ubsan_logs/CMSSW_12_1_UBSAN_X_2021-09-22-1600/logs/fb/fbd60ecf74cca6d7f126814ab38a80d5/log error, looks like https://github.com/cms-sw/cmssw/blob/master/CondFormats/JetMETObjects/src/SimpleJetCorrector.cc#L88 complains about zero size array. This happens when ``` N=1 par.size()=2 ```

please test

> @smuzaffar is the a “please patch” command that we could have to push the patch as a PR to my branch? good idea @vlimant , yes we can improve...

please test for el8_amd64_gcc12

please test

please test

so looks like the cuda code is not optional. Looks like there are some `*GPU*.cc e.g EERecHitGPU.cc , EERecHitGPUtoSoA.cc` files which requires cuda code ``` EERecHitGPU.cc:(.text+0x208c): undefined reference to `KernelManagerHGCalRecHit::run_kernels(KernelConstantData...

@fwyzard as gcc12 IBs are broken so we only build those on demand. I just have started one which should be available for test later in the evening