Hi, After half an hour of compiling code on an Intel SNB machine, at which time the machine was more or less permanently running with turbo boost active, I've gotten the following in my dmesg with Linux-3.1.0: CPU2: Package power limit notification (total events = 1) CPU3: Package power limit notification (total events = 1) CPU1: Package power limit notification (total events = 1) CPU0: Package power limit notification (total events = 1) CPU2: Package power limit normal CPU3: Package power limit normal CPU1: Package power limit normal CPU0: Package power limit normal [Hardware Error]: Machine check events logged CPU1: Package power limit notification (total events = 655) CPU2: Package power limit notification (total events = 655) CPU3: Package power limit notification (total events = 655) CPU0: Package power limit notification (total events = 655) CPU3: Package power limit normal CPU2: Package power limit normal CPU1: Package power limit normal CPU0: Package power limit normal [Hardware Error]: Machine check events logged Below is the output from mcelog. Is there anything that can be done about it? Cheers, - Udo mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 0 CPU 3 THERMAL EVENT TSC 179fecf42d7 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 3 below trip temperature. Throttling disabled STATUS c0000000880c0c00 MCGSTATUS 0 MCGCAP c07 APICID 3 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 1 CPU 1 THERMAL EVENT TSC 179fecf5d95 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 1 below trip temperature. Throttling disabled STATUS c0000000880c0c00 MCGSTATUS 0 MCGCAP c07 APICID 1 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 2 CPU 0 THERMAL EVENT TSC 179fecf72fb TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 0 below trip temperature. Throttling disabled STATUS c0000000880c0c00 MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 3 CPU 2 THERMAL EVENT TSC 179fecf88a9 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 2 below trip temperature. Throttling disabled STATUS c0000000880c0c00 MCGSTATUS 0 MCGCAP c07 APICID 2 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 4 CPU 3 THERMAL EVENT TSC 179fef2e964 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 3 below trip temperature. Throttling disabled STATUS c0000000880c0800 MCGSTATUS 0 MCGCAP c07 APICID 3 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 5 CPU 1 THERMAL EVENT TSC 179fef2fd56 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 1 below trip temperature. Throttling disabled STATUS c0000000880c0800 MCGSTATUS 0 MCGCAP c07 APICID 1 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 6 CPU 0 THERMAL EVENT TSC 179fef30d22 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 0 below trip temperature. Throttling disabled STATUS c0000000880c0800 MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 7 CPU 2 THERMAL EVENT TSC 179fef311bd TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 2 below trip temperature. Throttling disabled STATUS c0000000880c0800 MCGSTATUS 0 MCGCAP c07 APICID 2 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 8 CPU 2 THERMAL EVENT TSC 31a70403488 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 2 below trip temperature. Throttling disabled STATUS c000000088080c02 MCGSTATUS 0 MCGCAP c07 APICID 2 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 9 CPU 3 THERMAL EVENT TSC 31a7040468b TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 3 below trip temperature. Throttling disabled STATUS c000000088080c02 MCGSTATUS 0 MCGCAP c07 APICID 3 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 10 CPU 0 THERMAL EVENT TSC 31a704059b1 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 0 below trip temperature. Throttling disabled STATUS c000000088080c02 MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 11 CPU 1 THERMAL EVENT TSC 31a70407082 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 1 below trip temperature. Throttling disabled STATUS c000000088080c02 MCGSTATUS 0 MCGCAP c07 APICID 1 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 12 CPU 2 THERMAL EVENT TSC 31a705416f8 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 2 below trip temperature. Throttling disabled STATUS c000000088080802 MCGSTATUS 0 MCGCAP c07 APICID 2 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 13 CPU 1 THERMAL EVENT TSC 31a70542907 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 1 below trip temperature. Throttling disabled STATUS c000000088080802 MCGSTATUS 0 MCGCAP c07 APICID 1 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 14 CPU 0 THERMAL EVENT TSC 31a70543945 TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 0 below trip temperature. Throttling disabled STATUS c000000088080802 MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42 mcelog: Unsupported new Family 6 Model 2a CPU: only decoding architectural errors HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor MCE 15 CPU 3 THERMAL EVENT TSC 31a70543cab TIME 1322060688 Wed Nov 23 16:04:48 2011 Processor 3 below trip temperature. Throttling disabled STATUS c000000088080802 MCGSTATUS 0 MCGCAP c07 APICID 3 SOCKETID 0 CPUID Vendor Intel Family 6 Model 42