We sell clusters, many of them I include an SP2 temperature sensing device.
http://www.jacarta.co.uk/products/prod_sp.html
This can detect temperature (duh) and other things, like water or contact sensors. The sp2 has 2 sensors, you can get more others. The sp8 may be more your thing.
The sp2 can email, snmp trap sms etc. etc. etc. on configurable limits, a warning and an alarm.
You can also query it via snmp (what I do) and web pages etc. where you get a history of the temperature.
Personally, I use one temperature sensor in my server room. I also connect one to the clusters, I use email warnings if the room goes too high, and can shut down the cluster nodes if it gets serious.
I work in a company of around 150 people.
There are 1 (and a half, he is shared between projects) full time staff doing the administration.
On top of that, there are people dotted around the company who do many other sysadmin/network admin tasks such as printers and network setup.
That is a totaly Windows network however. The linux side, which has as many servers, two firewalls and six seperate networks for sandboxes, etc. only takes a few hours a week, but I expect my users to know what they are doing.
The 1% is too low, but how far it is too low will depend on the competence of those around you.
Gareth
On a serious note, linpack (http://www.netlib.org/linpack/)
You can run as many processes as required for your machine (i.e. 1 process per cpu) and with care you can use as much memory as you want (memory gets really hot and takes a lot more power than most people think).
I do development testing for manufacturers who want us to sell their kit, I have burnt out many (now the manufacturers believe me that they are underspec'd) power supplies by using a well tuned linpack run to overload the system.
It will take a bit of compilation to get it right for your system I suspect, but it can really heat a room up (got exhaust temps >60 celcius on some machines).
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We sell clusters, many of them I include an SP2 temperature sensing device. http://www.jacarta.co.uk/products/prod_sp.html This can detect temperature (duh) and other things, like water or contact sensors. The sp2 has 2 sensors, you can get more others. The sp8 may be more your thing. The sp2 can email, snmp trap sms etc. etc. etc. on configurable limits, a warning and an alarm. You can also query it via snmp (what I do) and web pages etc. where you get a history of the temperature. Personally, I use one temperature sensor in my server room. I also connect one to the clusters, I use email warnings if the room goes too high, and can shut down the cluster nodes if it gets serious.
I work in a company of around 150 people. There are 1 (and a half, he is shared between projects) full time staff doing the administration. On top of that, there are people dotted around the company who do many other sysadmin/network admin tasks such as printers and network setup. That is a totaly Windows network however. The linux side, which has as many servers, two firewalls and six seperate networks for sandboxes, etc. only takes a few hours a week, but I expect my users to know what they are doing. The 1% is too low, but how far it is too low will depend on the competence of those around you. Gareth
On a serious note, linpack (http://www.netlib.org/linpack/) You can run as many processes as required for your machine (i.e. 1 process per cpu) and with care you can use as much memory as you want (memory gets really hot and takes a lot more power than most people think). I do development testing for manufacturers who want us to sell their kit, I have burnt out many (now the manufacturers believe me that they are underspec'd) power supplies by using a well tuned linpack run to overload the system. It will take a bit of compilation to get it right for your system I suspect, but it can really heat a room up (got exhaust temps >60 celcius on some machines).