[GAP Forum] Handling Errors Automatically?

[Dima Pasechnik]

Dear Andrew,
On Wed, Nov 18, 2015 at 10:02:32AM -0500, Andrew Penland wrote:
> Hi all,
> 
> Is there a way to gracefully work around errors in GAP without a human in
> the loop? I know about OnBreak, but I haven't been able to get it to do
> what I have in mind.
> 
> I am working with groups which are finite but very large.  I want to
> iterate over a  collection of such groups and try to use the Factorization
> algorithm to find a certain element in each one. Sometimes this runs out of
> memory.I would like to have GAP catch the error, Print("This group used too
> much memory. \n"), then go on to the next group in the list without me
> being involved.
> 
> Is there any way to do this?

There is global variable OnBreak that can be set to specify the action in the
event your computation enters a break  loop.
See Sect. 6.4-3 of the GAP reference manual for details an examples.

HTH,
Dima


> 
> Thank you,
> Andrew Penland
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