Posts by Martin
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1) Message boards : Number crunching : Longer Sieve WUs (Message 23683)
Posted 441 days ago by Martin
As suspected, it has happened. I had to make a re-boot on one machine which had two cores running Collatz Sieve 1.20, and were about 36 hours into a 5 day WU. When the machine booted up, both WU's (and two more waiting to run) had all crashed with computation error.

I would like to repeat my request. For those without GPU co-processors, could we please have the option of the old WU length.
2) Message boards : Number crunching : Longer Sieve WUs (Message 23615)
Posted 456 days ago by Martin
I have just started to get the new 8x WUs. On my CPU based machines, the old WUs were taking 15 hours or thereabouts, which was quite long enough. The new WUs are estimating 5 DAYS. If anything goes wrong, I could be losing several days of computing time.

For the sake of others like myself without the GPU co-processors, could there be any way in which we could opt for the 1x WUs?
3) Message boards : Number crunching : Out of Memory errors (Message 23063)
Posted 529 days ago by Martin
Nearly every wu I have run in the last few days has crashed during restarts. Previously there had been no problems, even when running two wu's simultaneously.

The program reports:

Unhandled Exception Detected...

- Unhandled Exception Record -
Reason: Out Of Memory (C++ Exception) (0xe06d7363) at address 0x000007FEFD82A06D

Engaging BOINC Windows Runtime Debugger...

The computer has 2GB of memory and the task manager reports that there is nearly 1GB free, so I do not believe that I am actually running out of memory unless the Collatz Sieve 1.20 suddenly, and only for a short time, has a grab at a lot of memory.

Has anyone had a similar problem, or can suggest a solution.

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