Date: Wed, 5 May 2010 13:49:31 -0300 From: Joey Mingrone <joey@mingrone.org> To: freebsd-questions@freebsd.org, freebsd-cluster@freebsd.org Subject: saving job state over a power outage Message-ID: <i2pf5b896261005050949pbb11df25tb51cee326b0682b4@mail.gmail.com>
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Hello, Our lab has a cluster (Sun Fire X40z master node, Opteron 270 and generic 2.0 GHz Opteron based compute nodes) running 8.0-RELEASE. We've been informed that the power has to be turned off for the weekend, but one of the lab members has been running some jobs since December. I don't know much about the jobs, i.e., if they can be restarted without losing all the computing work that's been done so far. Can anyone suggest a way to save the state of the jobs so they can continue when the power comes back on? From experience, ACPI seems flaky if it will work at all because of problems with BIOS implementations. Also, iirc ACPI has issues with SMP kernels. Is there something similar to software suspend found in Linux? Does anyone have any other suggestions to accomplish this? Thanks in advance, Joey Mingrone
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