HPMC/LPMC

[santosh jha]

Can anyone explain me about HPMC/LPMC error.

What do we need to do if the server crashes with this error.

Regards

Santosh Jha

[Jeff Schussele · Accepted solution]

Hi Santosh,

HPMC = High Priority Machine Check - This almost always causes a crash & the resulting file is used by HP to determine root cause

LPMC = Low Priority Machine Check - an alert more or less & won't cause a crash. These are usually something like a correctable memory parity error. But can frequently point out an upcoming possible larger problem.

HTH,
Jeff

[Arunvijai_4]

For HPMC, take a look at your /var/tombstones/ts99 file. Also, look at var/adm/shutdown.log for any discrepancies.

-Arun

[Arunvijai_4]

LPMC, take a look at this threads,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=713223

-Arun

[Muthukumar_5]

Machine Check is differing as,

IPF-based Systems

Machine Check Abort (MCA)
Corrected Machine Check (CMC)

PA-RISC-based Systems

High Priority Machine Check (HPMC)
Low Priority Machine Check (LPMC)

More details:

http://docs.hp.com/en/J2237-90005/ch06s04.html
http://docs.hp.com/en/diag/ems/emd_lpmc.htm

hth.

[Bill Hassell]

If your machine crashes with an HPMC error, it is almost always a hardware failure and HP will have to replace a failing part. LPMC are usually 'correctable' errors such as single bit errors in RAM which are automnatically corrected and seldom cause a crash.