We have built our workstation with two Xeon Phi 7110p based on Intel W2600CR2 motherboard. Our accelerators are passively cooled. We have noticed that just after mpss service has been started, micsmc shows temperature around 100 oC and raising. Just around 140 oC ( which takes few seconds) micctrl shows "node lost" and we can do nothing except switch off and on the host. Reboot doesn't work - Xeon Phis were not visible in lspci unless host was not completely turned off and on again manually.
We have checked Scientific Linux 6.4 with mpss_gold_update_3-2.1.6720-21 and mpss-3.1.2 as well as Windows 7 Ultimate. Described behavior was system independent.
We have flashed MICs with newer firmware - nothing changed.
What can cause that kind of temperature raising just after MIC cards booted up?