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CMS Application :
Can multithreaded version of CMS be implemented?
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| Author | Message |
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 Send message Joined: 21 Feb 11 Posts: 72 Credit: 570,086 RAC: 1  
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Can multithreaded version of CMS be implemented to reduce overhead? So virtualbox doesn't have to emulate entire system for each workunit? |
 Send message Joined: 29 Aug 05 Posts: 1061 Credit: 7,737,455 RAC: 298 |
Can multithreaded version of CMS be implemented to reduce overhead? So virtualbox doesn't have to emulate entire system for each workunit? CMSSW can (and often does) run multithreaded. It's finding a way that suits all volunteer machines that is the difficult part. We did have the facility in -dev to run multi-core VMs, but each core ran a separate CMSSW job, not all cores working on one multithreaded job. This turned out to have its own inefficiencies (as you can no doubt imagine) and in practice I found that efficiency dropped with more than two cores/VM.  |
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