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Altera_Forum
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13 years ago

quartus_fit enters sleep state on Linux machines

I'm observing an issue on Linux machines where quartus_fit process goes back and forth between Running and Sleep states. When this happens, the build is not progressing, and eventually I need to kill the process.

This happens intermittently on different Linux distributions (CentOS 5 and custom-built), and at least two Quartus revisions.

There is sufficient amount of available memory, swap, and CPU in the system.

It happens when I run one or several builds concurrently.

I'm inclined to think that it's something to do with the server itself (but I've seen it on at least 3 very different servers). But I cannot rule out some obscure Quartus bug.

Any ideas why this happens are appreciated.

Thanks,

Evgeni

6 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    that sounds really strange, i haven't seen or heard of that sort of behavior

  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    Those are quite "heavy" designs that take 8-12 hours to build, require at least 12GB of memory and use 4 CPUs. I'd say that in 90% of builds this problem doesn't happen.

  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    A quick update.

    Those builds that were entering sleep state have actually completed. I let them run, and it took several times longer than usual. Instead of 8-12 hours, it took between 3 to 4 days.

    Opened an SR, and will see what Altera has to say about it.
  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    Another update.

    After going back-and-forth with Altera for a couple of months, the conclusion is that the root cause of this problem is high utilization + high routing congestion of this design.

    Hope Quartus 12.x will make things better.