Unable to merge computers

Metod, S56RKO
Metod, S56RKO
Joined: 11 Feb 05
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Topic 190831

For last few days I'm unable to merge computers. The problem is that clicking on merge this computer doesn't give me any possibilities.

I just can't see why these two computers are not treated mergeable.

edit: well, the cache size reported is different, could this be it?

edit 2: nope, that wasn't it

Metod ...

Pooh Bear 27
Pooh Bear 27
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Unable to merge computers

There is open WUs on them both. This is why.

Metod, S56RKO
Metod, S56RKO
Joined: 11 Feb 05
Posts: 135
Credit: 795,584,038
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RE: There is open WUs on

Message 25437 in response to message 25436

Quote:
There is open WUs on them both. This is why.

If this is it then it's a new policy. I used to be able to merge hosts even with open WUs before.

Metod ...

Jord
Joined: 26 Jan 05
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RE: There is open WUs on

Message 25438 in response to message 25436

Quote:
There is open WUs on them both. This is why.


That's when you try to delete a host. Merging two hosts doesn't care if they have work units in the list, yes or no.

Metod, the only thing way off that I see is the benchmark on the new hostID. Very low for a P4 3.6GHz. So you may want to try to re-run the benchmarks, then Update on the Einstein project and then try to merge them.

Pooh Bear 27
Pooh Bear 27
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...deleted wrong post...

...deleted wrong post...

Michael Karlinsky
Michael Karlinsky
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The same problem was reported

The same problem was reported at S@H.

seti thread

Solution was a MySQL update.

Michael

Bruce Allen
Bruce Allen
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RE: For last few days I'm

Quote:

For last few days I'm unable to merge computers. The problem is that clicking on merge this computer doesn't give me any possibilities.

I just can't see why these two computers are not treated mergeable.

edit: well, the cache size reported is different, could this be it?

edit 2: nope, that wasn't it

It's because one host reported to the scheduler AFTER the other host was created. See the last four lines of this function:

// return true if it's possible that the two host records
// correspond to the same host
//
function hosts_compatible($host1, $host2) {
    // we screwed around with Intel processor names,
    // so count them as compatible if both contain "Intel" and "Pentium",
    // and don't have conflicting clock rate info
    //
    $p1 = "$host1->p_vendor $host1->p_model";
    $p2 = "$host2->p_vendor $host2->p_model";
    if (strstr($p1, "Pentium") && strstr($p1, "Intel")
        && strstr($p2, "Pentium") && strstr($p2, "Intel")
    ) {
        $g1 = ghz($p1);
        $g2 = ghz($p2);
        if ($g1 && $g2 && ($g1!=$g2)) return false;
    } else {
        if ($host2->p_vendor != $host1->p_vendor) return false;
        if ($host2->p_model != $host1->p_model) return false;
    }
    if ($host2->os_name != $host1->os_name) return false;

// one host must strictly precede the other
//
if ($host1->rpc_time create_time) return true;
if ($host2->rpc_time create_time) return true;
return false;
}

Director, Einstein@Home

Ben Owen
Ben Owen
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RE: It's because one host

Message 25442 in response to message 25441

Quote:

It's because one host reported to the scheduler AFTER the other host was created.

That would explain why I can't merge my two installations on obiwan.

Does it matter if we delete the old hosts or just leave them cluttering up the database?

Ben

m.mitch
m.mitch
Joined: 11 Feb 05
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RE: It's because one host

Message 25443 in response to message 25441

Quote:


It's because one host reported to the scheduler AFTER the other host was created. See the last four lines of this function:

// return true if it's possible that the two host records
// correspond to the same host
//
function hosts_compatible($host1, $host2) {
    // we screwed around with Intel processor names,
    // so count them as compatible if both contain "Intel" and "Pentium",
    // and don't have conflicting clock rate info
    //
    $p1 = "$host1->p_vendor $host1->p_model";
    $p2 = "$host2->p_vendor $host2->p_model";
    if (strstr($p1, "Pentium") && strstr($p1, "Intel")
        && strstr($p2, "Pentium") && strstr($p2, "Intel")
    ) {
        $g1 = ghz($p1);
        $g2 = ghz($p2);
        if ($g1 && $g2 && ($g1!=$g2)) return false;
    } else {
        if ($host2->p_vendor != $host1->p_vendor) return false;
        if ($host2->p_model != $host1->p_model) return false;
    }
    if ($host2->os_name != $host1->os_name) return false;

// one host must strictly precede the other
//
if ($host1->rpc_time create_time) return true;
if ($host2->rpc_time create_time) return true;
return false;
}

Bruce,
Is there any chance that some time in the future the critera may not be so tight? I have a tendency to upgrade CPU's on my PC's and sometimes OS's.
Or should I wonder over to the BOINC boards and hound them there?

It just stikes me as a bit strange that I can't upgrade a whole PC and keep the results flowing to the PC with the same name.

Metod, S56RKO
Metod, S56RKO
Joined: 11 Feb 05
Posts: 135
Credit: 795,584,038
RAC: 34,805

RE: Bruce, Is there any

Message 25444 in response to message 25443

Quote:

Bruce,
Is there any chance that some time in the future the critera may not be so tight? I have a tendency to upgrade CPU's on my PC's and sometimes OS's.
Or should I wonder over to the BOINC boards and hound them there?

It just stikes me as a bit strange that I can't upgrade a whole PC and keep the results flowing to the PC with the same name.

As long as you stick to the same brand of OS (so that the same BOINC binary still runs), then you should be able to replace all of the hardware and still use the same host ID. And continue your work for projects as well.

The only real problem (which happens to me from time to time) is if the machine is not that stable. If it crashes and corrupts the client_state.xml, then BOINC will re-attach to projects, creating new host IDs for the same host. If you manage to change hardware at the same time (eg. install faster CPU), then you're unable to merge the two computers.

In my particular case, as I was uanble to merge the two hosts, I somehow reconstructed client_state.xml of the older host registration in order to make host data of both installations identical (I did temporarily change CPU with a faster one). I was not aware of timing constraints :(
After that I was able to finish all outstanding work allocated to the 'old' host. The only reason I'd rather merge the hosts instead of just deleting the old one after all the tasks are out of database is to keep the host credit.

One can't have it all, can (s)he?

[edit] typoes

Metod ...

Wurgl (speak^Wcrunching for Special: Off-Topic)
Wurgl (speak^Wc...
Joined: 11 Feb 05
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Credit: 140,550,008
RAC: 0

RE: As long as you stick to

Message 25445 in response to message 25444

Quote:
As long as you stick to the same brand of OS (so that the same BOINC binary still runs), then you should be able to replace all of the hardware and still use the same host ID.

I switched from Windows to Linux. No problem. Just save/restore the client_state.xml

Quote:
And continue your work for projects as well.

Okay, you cannot continue unfinished WU's ... this does not work.

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