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Process checkpoint-restart is a technology with great potential for use inHEP workflows. Use cases include debugging, reducing the startup time ofapplications both in offline batch jobs and the High Level Trigger, permittingjob preemption in environments where spare CPU cycles are being usedopportunistically and efficient scheduling of a mix of multicore andsingle-threaded jobs. We report on tests of checkpoint-restart technology usingCMS software, Geant4-MT (multi-threaded Geant4), and the DMTCP (DistributedMultithreaded Checkpointing) package. We analyze both single- andmulti-threaded applications and test on both standard Intel x86 architecturesand on Intel MIC. The tests with multi-threaded applications on Intel MIC areused to consider scalability and performance. These are considered an indicatorof what the future may hold for many-core computing.

Use of checkpoint-restart for complex HEP software on traditional architectures and Intel MIC