Check anti-virus, consider excluding BOINC directories.
Other threads here and on BOINC forums have more info.

Paul.

Not so. Yesterday, Rosetta gave me 1 "computation error"

I'll see if I can get lo the log file so we can compare notes. It was a coincident that I saw it. I don't check for these things and don't monitor the machines too much.

Got it.

The first thing I would do is reboot. I would also check for any overheating issues. If that still gives errors, then I would cut the usage back to one work unit at a time and then see if that runs without error. If so, I would increment by 1 and see if continues to run without error.
Cheers

Bobby B, Sgt. Joe, Paul Schlaffer, Falconet and .PMH_UK:

Thank you all for your responses and suggestions.

This is an older Windows 7 computer that I put together with parts from Tiger Direct..

It gets rebooted regularly because the machine shuts down spontaneously several times per week, primarily when running Einstein or Milky Way tasks.

In an effort to control heating, I installed three extra fans and drilled grids of holes in the case near the CPU and the memory modules. CoreTemp shows it runs between 146 and 159 degrees F. while running Rosetta and Universe tasks concurrently. The case has been open for the past week.

When it was running the series of WCG tasks that showed errors, I had specified No New Tasks for all by WCG. They were marked errors almost immediately, but the computer didn't shut down.

I don't overclock, but CoreTemp shows it running 90 to 100% at 3892 to 4091 MHz.
I haven't received any WCG tasks today or yesterday.

The reason could possibly be a hardware issue. This computer has been crunching BOINC projects 24/7/365 for about ten years. It may just be tired.

I have tacit permission from my CEO/CFO to buy a new computer and have been looking for good deals. The one I was ready to buy turned out to be a bait-and-switch item. Online at $599, but when I tried to order it Best Buy said sorry, we're all sold out of those. They DID have one display model, which made it look like a legitimate offer. Two days later the same model was listed at $879. I might just have to bite the bullet and get that one. I'm leery of refurbished computers. Anybody have good experience with a refurbished one?

It would be great if I could get one as durable as this one has been.

You very likely need a new, more powerful high quality power supply, which is capable to supply the power the system needs.


That should be OK.
EDIT: Just checked, this APU has a tCaseMax of 70°C which is 159°F, that means you are running it too hot. Probably not the reason for your issues, but you should do something about it too if you want to keep that computer.


Yes, it's harware issue, and you know it since it's shuting down itself several times a week, this should never happen. Never. But not the entire system is "tired", it's just the power supply, I'm 99% sure about this, system suddenly shutting down is typical sign for power supply not being able to deliver the power the system needs. And that of course might not only lead to sudden system shutdowns, but also other errors depending on the type of load.