#13211: Upgrade GAP to 4.5.6
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       Reporter:  kini                                            |         
Owner:  tbd              
           Type:  enhancement                                     |        
Status:  needs_work       
       Priority:  major                                           |     
Milestone:  sage-5.6         
      Component:  packages                                        |    
Resolution:                   
       Keywords:                                                  |   Work 
issues:                   
Report Upstream:  Reported upstream. Developers acknowledge bug.  |     
Reviewers:  Dmitrii Pasechnik
        Authors:  Volker Braun                                    |     Merged 
in:                   
   Dependencies:  #13123, #13579                                  |      
Stopgaps:                   
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Comment (by dimpase):

 Replying to [comment:185 dimpase]:
 > Replying to [comment:183 vbraun]:
 > > I've changed the pool size computation to default to at least 75MB.
 > no, you have set it to {{{75*1024**3}}}, which is 75**GB**!
 > You should do {{{75*1024**2}}} instead.

 I also think that
 {{{
    suggested_size = max(int(mem.available_swap() / 10),
                                          int(mem.available_ram()  / 50),
 # in case you run without swap
                                          75 * 1024**2 )      # about 75MB
 is the minimum to run GAP
 }}}
 is way too much for machines with a lot of RAM. E.g. I tried this on
 sage.combinat and got 3.6GB as the {{{suggested_size}}}.
 I'd rather propose
 {{{
    suggested_size = min(150 * 1024**2,
                                max(int(mem.available_swap() / 10),
                                int(mem.available_ram()  / 50),   # in case
 you run without swap
                                75 * 1024**2 ))      # about 75MB is the
 minimum to run GAP
 }}}
 for 150MB is certainly good enough, but would not lead to problems if you
 have a hundred instances of Sage running on the same machine.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13211#comment:186>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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