[Dip] error log interpretation

Shahin Gelareh shahin.gelareh at gmail.com
Mon Sep 19 09:12:32 EDT 2011


Hi Matthew,

Please fine the attached file.

best regards,
Shahin

On Mon, Sep 19, 2011 at 2:36 AM, Matthew Galati <matthew.galati at gmail.com>wrote:

> I am not sure what the issue is from just the log.
>
> My initial guess is that it is related to some subproblem (or master-only
> col) that is unbounded in the direction of the pricing cost vector. This
> would normally be dealt with using extreme rays. But, we have not yet added
> them - it is on the ToDo List. The way around it, is to artificially bound
> the subproblems with any finite bound.
>
> Please send me the .mps file and the blocks file and I will investigate.
>
> Thanks,
> Matt
>
> On Fri, Sep 16, 2011 at 5:34 PM, Shahin Gelareh <shahin.gelareh at gmail.com>wrote:
>
>> Hi, I have used the MIPBlock project t solve an instance for which the
>> blocks are identified in block file.
>> The process seems to have failed.
>> The following log contains a lot of information including the case where
>> RC is -INF. I wonder if anyone has experienced this or similar to this
>> before.
>> Perhaps knows what would be the cause of such errors.
>> any comment appreciated.
>> regards,
>> Shahin
>>
>> ========================================================
>> ========================================================
>> Welcome to the DIP Decomposition Framework
>> Copyright 2002-2011 Lehigh University and others
>> All Rights Reserved
>> Distributed under the Eclipse Public License 1.0
>> Version: 0.82.0
>> Build Date: Aug 23 2011
>> ========================================================
>> ========================================================
>>
>>
>>
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